Miami-Dade County Public Schools Division of Academics Benchmark Resources Middle School Comprehensive Science September 2014 THE SCHOOL BOARD OF MIAMI-DADE COUNTY, FLORIDA Ms. Perla Tabares Hantman, Chair Dr. Lawrence S. Feldman, Vice-Chair Dr. Dorothy Bendross-Mindingall Ms. Susie V. Castillo Mr. Carlos L. Curbelo Dr. Wilbert “Tee” Holloway Dr. Martin Karp Dr. Marta Pérez Ms. Raquel A. Regalado Mr. Julian Lafaurie Student Advisor Mr. Alberto M. Carvalho Superintendent of Schools Ms. Maria L. Izquierdo Chief Academic Officer Office of Academics and Transformation Dr. Maria P. de Armas Assistant Superintendent Division of Academics Mr. Cristian Carranza Administrative Director Division of Academics Department of Mathematics and Science Dr. Ava D. Rosales Executive Director Department of Mathematics and Science Table of Contents Sixth Grade SC.6.E.7.4 – Spheres’ Interactions …………………………………………………….……………… 5 SC.6.E.7.5 – Movement in the Atmosphere ………………………………………...………………..10 SC.6.P.13.1 – Does something have to be touching to interact? ………………………………… 15 SC.6.P.13.3 – Modeling Unbalanced Forces ……………………………………...…………………18 SC.6.L.14.1 – Hierarchical Organization of Organisms ………………...…………………………..21 SC.6.L.14.2 – Investigating Cell Theory …………………………………...…………………………25 SC.6.L.14.4 – Animal and Plant Cell Organelles .………………………..………………………….31 SC.6.L.14.5 – Organs Wanted ………………………………………….……………………………. 34 SC.6.L.15.1 – Organizing Organisms ...…………………………………………………...………….38 Seventh Grade SC.7.E.6.2 – A Rocky Adventure …………………………………..……………………………..…..47 SC.7.E.6.4 – Dig It! …………………………………………………………………..………………… 51 SC.7.E.6.5 – Plate Tectonics …………………………………………………..…………………….. 67 SC.7.P.10.1 – The Electromagnetic Spectrum …………………………………..…………………. 79 SC.7.P.10.3 – Wave Behaviors ……………………………………………...………………………..86 SC.7.P.11.2 – The Power of Energy…… …………………………………...……………………….. 96 SC.7.P.11.4 – Socks and Temperature ……………………………………………………………..102 SC.7.L.15.2 – Evolution and Natural Selection ………………………………………………….…108 SC.7.L.16.1 – Toothpick Chromosomes …………………………………………………………… 116 SC.7.L.17.2 – Symbiosis …………………………………………………………………………….. 123 Eighth Grade SC.8.E.5.3 – Hierarchical Relationships in Space ……………………..…………………………. 131 SC.8.E.5.5 – Star Classifications ……………………………………..……………………………..138 SC.8.E.5.7 – A Closer Look of the Inner and Outer Planets ……………………………………...141 SC.8.E.5.9 – Earth, Moon and Sun Relationships …………………………………..……………. 145 SC.8.P.8.4 – What’s the Matter? …………………………………………………………………….151 SC.8.P.8.5 – Elements, Compounds, Mixtures, Oh My! ………………………….……………....154 SC.8.P.9.2 – Changes of Matter ………………………………………………………………….… 159 SC.8.L.18.4 – Sorting Out Cycles in Nature …………………………………………………….… 167 Division of Academics – Department of Science 3 6th Grade Benchmark Resources Division of Academics – Department of Science 4 Spheres’ Interactions Benchmark(s): SC.6.E.7.4: Differentiate and show interactions among the geosphere, hydrosphere, cryosphere, atmosphere, and biosphere. SC.6.E.7.2: Investigate and apply how the cycling of water between the atmosphere and hydrosphere has an effect on weather patterns and climate. SC.6.E.7.3: Describe how global patterns such as the jet stream and ocean currents influence local weather in measurable terms such as temperature, air pressure, wind direction and speed, and humidity and precipitation. SC.6.E.7.6: Differentiate between weather and climate. SC.6.E.7.9: Describe how the composition and structure of the atmosphere protects life and insulates the planet. Summary: This lesson is intended to review or remediate content. At the end of this lesson students will show mastery on identifying and giving examples of spheres interactions, differentiate weather and climate and describe how the atmosphere protects life and insulate our planet. KUD-Objectives: Students will Know: The five spheres of the Earth: geosphere, hydrosphere, cryosphere, atmosphere, and biosphere. The composition of the five layers of the atmosphere. The difference between weather and climate. Students will Understand: How the spheres of the Earth function and interact as a complex system influencing the weather and the climate of a region. That weather is the condition of the atmosphere at a particular place and time whereas climate is the pattern of behavior of the atmosphere over a long period of time. How the composition of the five layers of the atmosphere protects life and insulates the planet. Students will be able to Do: Identify and give examples of spheres interactions. Differentiate between weather and climate. Give examples of how the atmosphere protects life and insulates the planet. Essential Questions: How do Earth's spheres interact to support life on our planet? How do weather and climate differ? How does the atmosphere protects life and insulates the planet? Division of Academics – Department of Science 5 Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstratio n Engage Lesson Cycle: GRRM 5E * I Do Powerpoint presentation Student worksheet Use a 5 tabs foldable where students will collect information by explaining the composition of each layer of the atmosphere and how the layer protects the planet. StudyJams Layers of the atmosphere Complete a Venn diagram “Weather and Climate”. Give examples of each. Studyjams Weather and climate Check for understanding about the atmosphere BBC bitesize Student products such as CER, DI Menus Student worksheet. Layers of the atmosphere 5 tabs foldable explaining the composition of each layer and how the layer protects the planet. Venn diagram “Weather & Climate” Research, Home Learning -Students will collect weather data over several days or weeks, graph temperature data, and compare the temperature data collected with averaged climate data where they live, to better understand the differences between weather and climate. http://eo.ucar.edu/educators/ClimateDiscovery/LIA_lesson1_9.28.05.p df or - Writing activity: Think about what you have learned about Earth's spheres. Each sphere is unique in its own way, yet depends on other spheres to help sustain life on our planet. If you had to choose one sphere to label as the "most important" sphere, which one would you claim it to be? Support your opinion with factual evidence that supports your claims. Exit Slip FCAT connection questions. See below Answer key Explain Evaluate Extend/ Elaborate You Do On the board or on chart paper, write the words "Atmosphere”. Have students brainstorm with a partner or in a group ideas about what the atmosphere is. Let students share their ideas, and write these down in a web or a list on the board or chart paper. Then ask “How does the atmosphere interact with other spheres to support life in our planet?” Use this discussion to formatively assess how much the students already know about the spheres, and use this chance to discuss any misconceptions that may arise. Video to introduce the spheres of the Earth Labs, Investigations, DI Opportunities Explore We Do Activities 1. 2. 3. 4. 5. C D A D Plants using the carbon dioxide during the process of photosynthesis. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 6 Summative Assessment: 1-The climate of an area can be different from its weather. Which of the following statements describes the climate of an area? (SC.6.E.7.6) A.There should be heavy rains tomorrow morning. B.The rains next week are expected to cause some flooding. C.The average temperature from 1930–1996 was 23°C (74°F). D.The high temperature on September 4, 2009, was 32°C (89°F). 2-Which two spheres interact when a glacier erodes rock? A. the geosphere and the atmosphere B. the biosphere and the geosphere C. the biosphere and the cryosphere D. the cryosphere and the geosphere 3-Identify the example that shows how the biosphere and atmosphere can interact. A. people breathing in oxygen B. plants obtaining nutrients from the soil C. ocean waves breaking down rocks D. animals eating other animals 4-When carbon dioxide dissolves from the air into the ocean -the interaction is between (SC.6.E.7.4) A. the atmosphere and lithosphere B. the atmosphere and biosphere C. the atmosphere and atmosphere D. the atmosphere and hydrosphere 5-The atmosphere surrounding Earth helps to maintain the various climates found around the world and keeps Earth from becoming extremely cold all over. How does the atmosphere help to keep Earth insulated and warm? A. The atmosphere creates heat as Earth moves through space, helping to insulate Earth. B. The atmosphere traps the heat generated by Earth's core and helps maintain Earth's climate. C. The atmosphere helps spread the warmth from the water near the equator to other parts of Earth. D. The atmosphere helps trap heat energy from the Sun and energy radiated from Earth to maintain the climate. 6-Give an example of how the atmosphere can change the biosphere. ____________________________________________________________________________________ ____________________________________________________________________________________ ___________________________________________________________________________________ Division of Academics – Department of Science 7 Guided notes Fill in the blanks as you watch the powerpoint presentation. • The ________________ (Water) is the liquid water component of the Earth. It includes the oceans, seas, lakes, ponds, rivers and streams. It covers about 70% of the surface of the Earth and is the home for many plants and animals. The hydrosphere, like the atmosphere, is always in motion. • The _________________ ("icy cold water sphere") is the frozen part of Earth: the glaciers, icebergs at sea, and the huge icecaps in Greenland and Antarctica. The cryosphere is the term which collectively describes the portions of the Earth’s surface where water is in solid form. It includes: sea ice, lake ice, river ice, snow cover, glaciers, ice caps and ice sheets, and frozen ground • The ___________________ (Air) relates to meteorological features and phenomena such as weather, clouds, or aerosols (particles in the air). It includes an ever‐ changing mixture of gas and small particles located above and surrounding the Earth’s surface. It includes: ‐ Clouds ‐ Hurricanes and Cyclones ‐ Aurora ‐ Air Pollution/Aerosols ‐ Dust and Sand Storms • The _________________ (Life) is associated with living systems such as biomes or ecosystems. This includes life on land, in the oceans and rivers, and even life we cannot see with the naked eye. It includes: ‐ Coastal Biomes ‐ Forests ‐ Deserts ‐ Grasslands ‐ Urban/Agricultural Ecosystems • The ___________________ (Land) is associated with solid portions of the Earth. It includes rocks, sediments and soils, surface landforms and the processes that shape the surface. Features associated with this sphere can be broken down into a variety of different processes and related surface landforms. Features are: Valley networks, river channels/canyons, deltas, Sand dunes, wind streaks, Folds, faults, mountains, Volcanoes Examples of sphere interactions: -Humans (biosphere) built a dam out of rock materials (geosphere). -Plants (biosphere) draw water (hydrosphere) and nutrients from the soil (geosphere) and release water vapor into the air (atmosphere). Division of Academics – Department of Science 8 Student handout 1-Identify each sphere of the Earth represented in the picture. Give examples of their features. 2-.Choose one of the pictures and describe at least 3 sphere interactions you can infer from the scene. 1___________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ 2___________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ 3___________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ Division of Academics – Department of Science 9 Movement in the atmosphere Benchmark(s): SC.6.E.7.5 Explain: how energy provided by the Sun influences global patterns of atmospheric movement and the temperature differences between air, water, and land. Also Assesses SC.6.E.7.1 Differentiate among radiation, conduction, and convection, the three mechanisms by which heat is transferred through Earth’s system. Summary: This lesson is intended to review or remediate content. After this lesson students will be able to explain how energy provided by the sun influences the temperature differences between air, water, and land. Students will be able to explain the origin of sea breezes and land breezes. To explore the content use any of the three options provided or you can differentiate using all three activities depending on the needs of your students. KUD-Objectives: Students will Know: That heat can be transferred by conduction, convection and radiation, and that the uneven heating of the earth’s surface creates weather patterns. Students will Understand: That air, land and water heat at different rates. That heat is transferred due to the difference in temperature. That uneven heating between land and water creates wind. Students will be able to Do: Compare and contrast the three mechanisms of heat transfer: Conduction, convection and radiation. Demonstrate and explain how land breeze and sea breeze are created due to the uneven heating between land and water. Essential Questions: How is the energy from the sun transferred? How is convection different to conduction and radiation? How and why is wind created? Division of Academics – Department of Science 10 Explore Engage Lesson Cycle: GRR 5E Suggest M* ed Activities I Do Formative Assessm ent Probe, Video clip, Teacher Demonstr ation We Labs, Do Investigat ions, DI Opportuni ties Explain Student products such as CER, DI Menus Research , Home Learning Extend/ Elaborat e You Do Evaluate Exit Slip Activities You can begin this lesson with this Convection Current Demo: http://betterlesson.com/document/66882/convection-currents-demo Then use the following video to clarify any misconceptions: Studyjams: Wind, Heat. PPT “Movement in the atmosphere” Guided notes and student handout “Movement in the atmosphere” 1- PPT “Movement in the atmosphere” Guided notes and student handout “Movement in the atmosphere” Animations: http://www.classzone.com/books/earth_science/terc/content/visualizat ions/es1903/es1903page01.cfm http://swf.tebyan.net/1391/12/20130219113604507.swf 2- Lab activity “Hot, Hot, Hot” 3- Gizmo Coastal Winds and Clouds: Observe daily weather conditions in a coastal region. Measure temperatures and wind speeds at any location and use this data to map convection currents that form during the day and night. Explain the origin of land breezes and sea breezes. 1-Guided notes and student handout “Movement in the atmosphere” -Foldable “Land breeze/ Sea breeze”: Fold the outer edges of the paper to meet at the mid-point, forming a shutter fold. Ask students to draw arrows indicating the general direction of air movement over the sand and the water during the day (on the left) and after the sun goes down (on the right). Label each side of the foldable with the corresponding breeze (sea or land). Add any other useful information. 2-Lab “Hot, Hot, Hot” student handout. 3-Gizmo exploration guide: “Coastal Winds and Clouds” Create a poster to illustrate how heat is transferred between air, land and water. Make sure to label each part of the poster and use vocabulary words: conduction, convection, radiation, sea breeze, land breeze. FCAT connection. Answer key: 1. B 2. D 3. B 4. A GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 11 Summative Assessment: 1- Which is the major source of energy for most of Earth’s weather patterns? A. earthquakes along fault zones B. radiation received from the Sun C. convection currents in Earth’s mantle D. radioactive decay within Earth’s interior 2- Local winds and global winds are generally A. influenced by Earth’s tilted axis. B. unpredictable. C. changing directions from day to day. D. created by the unequal heating of Earth’s surface. 3- What is happening at point C in the diagram to the right? A. The sun warms Earth’s surface through radiation B. The ground warms the atmosphere through conduction C. The air warms the ground through convection D. Heat moves through the air due to convection 4- In the summer, coastal towns usually experience cool ocean breezes, as shown in the diagram below. Which process creates the type of ocean breeze shown? A. Cool air above the ocean sinks and warm air above the land rises. B. Cool air above the ocean rises and warm air above the land sinks. C. Warm water evaporates and condenses above the ocean. D. Warm water condenses and precipitates above the ocean. Division of Academics – Department of Science 12 ---------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------- Division of Academics – Department of Science 13 STUDENT HANDOUT Identify and label the way in which heat is being transferred in the picture below (Radiation, Conduction and Convection). Explain each scenario. 1. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ 2. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ 3. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ 4. _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ _____________________________________________________________________________ Division of Academics – Department of Science 14 Does something have to be touching to interact? http://www.cpalms.org/Public/PreviewResource/Preview/21863 From CPLAMS Benchmark(s): SC.6.P.13.1: Investigate and describe types of forces including contact forces and forces acting at a distance, such) as electrical, magnetic, and gravitational. Students will then conduct an exploration involving various types of forces and explain their results by contributing to a class data table and comparing and contrasting the results of all the groups. An additional CPALMS activity is provided as an extension to this resource. Summary: Students will be engaged in the lesson with a static electricity demonstration during which the students will make observations and propose explanations. KUD-Objectives: Students will Know: Forces can act on an object at a distance or by direct contact. Common types of forces such as electrical, magnetic, gravitational, frictional (including air resistance), and applied forces. Students will Understand: Applying a force requires energy and may lead to the movement or change in movement of an object. Students will be able to Do: Investigate the affect of various forces on objects. Essential Question: Do objects have to be touching to exert a force on one another? Division of Academics – Department of Science 15 Lesson Cycle: GRRM* 5E Engage I Do We Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Activities Ask students if they think you can pick up the little pieces of paper you just spilled on one of their desks "by accident," without touching the pieces of paper with your hands. Have Yes responders move to the right of the room and No's to the left. Reveal a blown up balloon, rub it on your shirt then hover it over the pieces of paper. Have students attempt to explain what happened using words or pictures and labels in their notebook. Electric Circuits Demo: Set up a simple circuit. Have students identify what happens to the light when the circuit is not touching/closed. Explore Magnetic Forces Hands On Inquiry: Student products such as CER, DI Menus Students will use the centimeter side of a ruler to investigate forces at a distance. Students will place a paperclip at 0cm and slowly move the magnet from 10cm toward the magnet until the paperclip jumps to the magnet. Students will do 3 trials and record the distance where the magnet is when the paper clip was attracted. A student from each team will come up to write their data on the teacher created table on the board for class discussion comparing results of all teams' experiments. Were everyone's results similar? Why or why not? What other observations did you make while studying forces acting at a distance using magnets? What observations did you make while studying contact forces during the electric circuits demonstration? Research, Home Learning Let’s Make Contact! – a CPalms resource Exit Slip See assessment items below Evaluate You Do Extend/ Elaborate Explain GRRM* Gradual Release of Responsibility Model Summative Assessment Key: 1. A, 2. D, 3. Answers will vary Division of Academics – Department of Science 16 Summative Assessment: 1. Carla pushes a toy car and lets it go. The toy car rolls and gradually comes to a stop. What would make the car stop? A. A force must be applied to the car in a direction opposite to that in which it is moving. B. A force must be applied pushing the car forward in the same direction as the moving car. C. A force must be applied in a direction pushing the car upward to make the car stop. D. A force must be applied in a direction pulling the car downward causing the car to stop. 2. Gordon is making a list of forces for his science class. Which of the following should Gordon NOT list as a force A. gravity B. friction C. a push or pull D. mass 3. Forces are required to move objects provide an example of how a force can be applied to an object through contact and a second example in which the force acts at a distance. Division of Academics – Department of Science 17 Modeling Unbalanced Forces Benchmark(s): SC.6.P.13.3: Investigate and describe that an unbalanced force acting on an object changes its speed, or direction of motion, or both. Summary: Students will be engaged in the lesson by balancing index cards by leaning the cards against each other and describing how they assume forces are acting on the cards. The forces they may include are gravity and the pushing against each other. Students will then brainstorm a tug-of-war match among classmates that they predict will end in a draw. This will require the students to describe how forces affect the result of the match. Students will then create a Claim-Evidence-Reasoning (CER) to respond to the essential question. KUD-Objectives: Students will Know: Forces acting on an object can be balanced or unbalanced Students will Understand: Unbalanced forces acting on an object will change the motion (speed, direction or both) of an object. Students will be able to Do: Investigate and explain that an unbalanced force acting on an object changes the direction of motion of the object. Explain Explore Engage Essential Question: How do objects react to forces? Lesson Cycle: GRRM* 5E Suggested Activities I Do Formative Assessment Probe, Video clip, Teacher Demonstration We Do Labs, Investigations, DI Opportunities Student products such as CER, DI Menus Activities Provide each student with a pair of index cards and have them lean the cards against each other without the cards falling down. Have students draw a diagram of their cards and label how the cards are pushing against each other. Using a masking tape as a marker and rope, students will design a tug-of-war with the students in the class in which they predict a tie. During the development of the tug-of-war, the teacher should probe prompt students to incorporate the concept of force and have the students describe what would determine if a team wins or if the game ends in a tie. The students should then test their tug-of-war teams and record their observations. Students complete a Claim-Evidence-Reasoning responding to the essential question (How do objects react to forces?). The teacher may need to introduce the terms net force, balanced force and unbalanced force if the terms did not emerge from the tug of war exploration. Division of Academics – Department of Science 18 Extend/ Elaborate Evaluate You Do Research, Home Learning As a home learning extension, students develop a Protective Egg System. Exit Slip See assessment items below. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 19 Summative Assessment: 1. A box that is sitting against a wall has a mass of 5 kg. The box is pushed with a force of 10 N in the direction shown, but the box does not move. What is the net farce acting on the box? A. B. C. D. The net force acting on the box is 10 N. The net force acting on the box is 50 N. The net force acting on the box is 0 N. The net force acting on the box is 40 N. 2. The object shown has several different forces acting on it. Calculate the net force acting on the object and describe its motion, if any. 3. The box shown moves to the right with a force of 15 N. Which of the following situations would cause the described motion of the box? A. B. C. D. A push of 40 N to the left and a push of 25 N to the right Apushof65Ntotherightandapushof50Ntotheleft A push of 70 N to the right and a push of 55 N to the right A push of 5 N to the left and a push of 10 N to the left Division of Academics – Department of Science 20 Hierarchical Organization of Organisms Benchmark(s): SC.6.L.14.1: Describe and identify patterns in the hierarchical organization of organisms from atoms to molecules and cells to tissues to organs to organ systems to organisms. Summary: Students will engage in the lesson by discussing prior knowledge of the relationship of the levels of organization. Students will then use sets of images that will be prepared in envelopes prior to the lesson to explore the hierarchy of living things and explain patterns across the sets of living things to describe the hierarchy. Students should have the opportunity to extend their learning, potentially through home learning, by developing the hierarchy for additional organisms. A short summative evaluation is also provided. (Prior to the activity, the teacher will need to prepare a set of envelopes labeled A, B, and C for each group and have the levels of organization images pre-cut and in the envelopes) KUD-Objectives: Students will Know: The hierarchical organization of living things from atoms to organisms. Students will Understand: Each layer in the hierarchy consists of a grouping of the layer before. Students will be able to Do: Describe the patterns in the hierarchical organization of living things from atoms (least complex) to organisms (most complex). Arrange components of the hierarchy in the appropriate order. Explain Explore Engage Essential Question: How are our bodies and the bodies of other complex living things organized? Lesson Cycle: GRRM* 5E Suggested Activities Activities I Do Formative The teachers will display the terms: Atoms, Molecules, Cells, Tissues, Assessment Organs, Organ Systems, Organisms (with or without associated images) Probe, Video and have students discuss the meaning of the terms and relationship to clip, Teacher each other. Demonstration We Do Labs, Using the envelopes prepared prior to the activity (described in the Investigations, summary), groups of students will organize the contents of envelope A. DI The teacher will facilitate the students’ discussion to ensure accuracy Opportunities and understanding. Students will use the remaining envelopes in a similar manner noting similarities and differences among the three sets. Extend/ Elaborate You Do Student products such as CER, DI Menus Using examples from the previous exploration, students will describe the patterns in the hierarchical organization of living things from atoms to organisms and discuss the importance of each level. Research, Home Learning Have students use different organisms to develop models of hierarchical organization from atoms to organisms and compare and contrast these models. Division of Academics – Department of Science 21 See below Evaluate Exit Slip GRRM* Gradual Release of Responsibility Model Summative Assessment Key: 1. D 2. C 3. D 4. B Division of Academics – Department of Science 22 Summative Assessment: 1. Humans and other complex organisms have a hierarchical system of organization. Which of the following statements is true regarding this system of organization? A. Atoms are made of cells. B. Organs are made of organ systems. C. Cells are made of tissues. D. Organs are made of tissues. 2. The nervous system is the body's switchboard, sending signals between different parts of the body. The central hub of the nervous system is the brain. The brain is an example of which level of hierarchical organization within the body? A. cell B. tissue C. organ D. organ system 3. In a human body, which of the following represents the highest level of structural organization? A. an atom in the lung B. lung tissue C. the lungs D. the respiratory system 4. Epithelial tissue covers the entire surface of many organisms. Which term describes the structure directly below tissues in the hierarchical organization of life? A. atoms B. cells C. molecules D. organs Division of Academics – Department of Science 23 Envelope A Division of Academics – Department of Science Envelope B Envelope C 24 Investigating Cell Theory Adopted from CPalms: http://www.cpalms.org/Public/PreviewResourceLesson/Preview/40202 Benchmark(s): SC.6.L.14.2: Investigate and explain the components of the scientific theory of cells (cell theory): all organisms are composed of cells (single-celled or multi-cellular), all cells come from pre-existing cells, and cells are the basic unit of life. Summary: Students will engage in a discussion of prior knowledge to develop an anchor chart. Students will then explore the components of cell theory through a variety of multimedia sources. Students will continue to research the components of cell theory and collaborate on presenting their findings. KUD-Objectives: Students will Know: all organisms are composed of cells (single-celled or multi-cellular) all cells come from pre-existing cells cells are the basic unit of life Students will Understand: All living things display the 3 components of cell theory and each may be applied in a variety of scenarios Students will be able to Do: Investigate and explain and justify the components of cell theory. Essential Question: What characteristics do all living organisms have in common? Division of Academics – Department of Science 25 Lesson Cycle: GRRM* 5E We Do Activities Begin the lesson with the Think-Ink-Pair-Share method to assess prior. The teacher will ask students to THINK about the following question: "What characteristics do living organisms share?" Then, they will INK (write) their responses in their notebooks. Students will PAIR up with a shoulder buddy to discuss their answers. Finally, students will SHARE their responses with the group. The teacher will record responses on an anchor chart that will remain on the wall throughout the lesson. Show "Introduction to the Characteristics of Life" (3:40) on YouTube. After viewing, ask the students to share additional ideas about the characteristics of living things and add student ideas to the anchor chart. Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Have the students set up a 4-column foldable or table. Head the columns with the following headings: Date, Scientist, Discovery, and What is the significance of the discovery? Using the Discovery Education Video, All Living Things Are Made of Cells, students will gain information about the first two components of cell theory. The final component can be observed using the Bacteria Cam at www.cellsalive.com. The middle intermediate from can be adjusted by typing a number into the box below the image and pressing enter on your keyboard. Sharing the link with students and letting them manipulate the slides would be an appropriate incorporation of the district’s BYOD policy into the activity. Alternatively, computer stations with the website open can be used. Explore Have the students create a table in their notebooks with these column headings: source and evidence to support cell theory tenant. Have the students label each row with one tenant of the cell theory. Introduce students to the rubric for their cell theory presentation (see below) Assign each student to a partner. They will work together to complete this investigation and to create a presentation. Student pairs will move through the stations to find evidence to support each of the cell theory components. Each student will record his/her findings in the tables. Division of Academics – Department of Science 26 Student products such as CER, DI Menus Finally, revisit the anchor chart. Ask students what they learned about their understanding of common characteristics of living organisms. Explain Extend/ Elaborate Evaluate You Do After students have completed the activity, discuss the evidence cited by the students. Have students present their information and justify their evidence. Research, Home Learning Exit Slip Have students create a paper slide video to the Mr. Parr song "Cells from Other Cells" on YouTube. Students will create slides (pictures/diagrams) for each verse and chorus. Once they have illustrated the entire song, they play the song through speakers and record a video of the slides that correspond to the song. See assessment items below GRRM* Gradual Release of Responsibility Model Summative Assessment Key 1. A 2. A 3. C Division of Academics – Department of Science 27 Summative Assessment: 1. Which of the following is something that all living organisms have in common? A. They all contain at least one cell. B. They all need a source of oxygen. C. They all use other organisms for food. D. They all find mates to reproduce. 2. If a person cuts his or her finger, eventually the cut will heal and the skin will be whole again. How does the gap created by the cut get filled? A. Cells below the cut make copies of themselves and the new cells fill the gap. B. Cells on either side of the cut pull toward each other until they close the gap. C. Cells are harvested from other parts of the body and brought to fill the gap. 3. Why are cells considered to be the basic units of life? A. B. C. D. Cells have their own organs. All cells can produce their own food. The cells do the work that keeps all organisms alive. Cells form tissues and organs in every living organism. Division of Academics – Department of Science 28 Multimedia Project : Cell Theory Presentation Rubric Teacher Name: Student Name: ________________________________________ CATEGORY 4 3 Evidence to Presentation contains an Presentation contains an support image that strongly supports image that supports the component the component of cell theory. component of cell theory. #1 Justification of support component #1 Evidence to support component #2 Justification of support component #2 2 Presentation contains an image that weakly supports the component of cell theory. 1 Image does not provide support for cell theory component. Students have clearly stated their justification for selecting the image to support the cell theory component and demonstrate good understanding of how the image supports the component. Presentation contains an image that strongly supports the component of cell theory. Students have stated their justification for selecting the image to support the cell theory component. Students' justification is incomplete and/or does not completely justify their reason for using the image. The students' justification is incorrect OR the students did not justify their reasoning for selecting the image. Presentation contains an image that supports the component of cell theory. Presentation contains an image that weakly supports the component of cell theory. Image does not provide support for cell theory component. Students have clearly stated their justification for selecting the image to support the cell theory component and demonstrate good understanding of how the image supports the component. Students have stated their justification for selecting the image to support the cell theory component. Students' justification is incomplete and/or does not completely justify their reason for using the image. The students' justification is incorrect OR the students did not justify their reasoning for selecting the image. Division of Academics – Department of Science 29 Evidence to support component #3 Presentation contains an image that strongly supports the component of cell theory. Presentation contains an image that supports the component of cell theory. Presentation contains an image that weakly supports the component of cell theory. Image does not provide support for cell theory component. Justification of support component #3 Students have clearly stated their justification for selecting the image to support the cell theory component and demonstrate good understanding of how the image supports the component. Source information collected for all graphics, facts and quotes. All documented in desired format using www.easybib.com. Students have stated their justification for selecting the image to support the cell theory component. Students' justification is incomplete and/or does not completely justify their reason for using the image. The students' justification is incorrect OR the students did not justify their reasoning for selecting the image. Source information collected for all graphics, facts and quotes. Most documented in desired format using www.easybib.com. Source information collected for graphics, facts and quotes, but not documented in desired format (www.easybib.com). Very little or no source information was collected. Sources Attractiveness Makes excellent use of font, color, graphics, effects, etc. to enhance the presentation. Makes good use of font, Makes use of font, color, color, graphics, effects, etc. to graphics, effects, etc. but enhance to presentation. occasionally these detract from the presentation content. Use of font, color, graphics, effects etc. but these often distract from the presentation content. Mechanics Three or fewer misspellings and/or mechanical errors. More than 4 errors in spelling or grammar. No misspellings or grammatical errors. Division of Academics – Department of Science Four misspellings and/or grammatical errors. 30 Animal and Plant Cell Organelles Benchmark(s): SC.6.L.14.4: Compare and contrast the structure and function of major organelles of plant and animal cells, including cell wall, cell membrane, nucleus, cytoplasm, chloroplasts, mitochondria, and vacuoles. Summary: This activity will help students reinforce their understanding of the organelles that are present in animal and plant cells. Students will also review the function of each organelle and the type(s) of cell the organelle is present in. Students will explore a variety of sources included a hands-on investigation, video, and text to gather information regarding cells and their structures. KUD-Objectives: Students will Know: The organelles which are present in animal and plant cells. Students will Understand: Understand the function of each organelle. Students will be able to Do: Create a model of cell complete with all the proper organelles and describe the function of those organelles Engage Essential Question: Do plant and animal have cells that are more similar to each other or more different than each other? Lesson Cycle: GRRM* 5E Suggested Activities Activities I Do Formative Display graphics of both plant and animal cells (posters, Assessment Cells Alive, Discovery Ed). Have students compare and Probe, Video contrast the two cells. clip, Teacher Demonstration We Do Labs, Students will examine plant and animal cells under a Investigations, microscope. During the examination students should take DI detailed observations in both written and pictorial forms for Opportunities each sample observed. Explore Students will view Nerdy Plant Cell meets Cool Animal Cell then use the video to clarify their observations and use the content of the video to explain the observed differences. Students should use the Discovery Education article “Cells” as an additional source of information. Applying an active reading strategy such as predictive vocabulary pre-reading, text-coding should be used when reading the text and one sentence summaries of each section. Division of Academics – Department of Science 31 Explain Using the information gathered from the investigation, articles, and video, students will complete a CER in response to the essential question. “Do plant and animal have cells that are more similar to each other or more different than each other?” Research, Home Learning Students should: Using information from the three sources (personal observations, reading, video) draw and label a concept map that shows the similarities and differences between a plant cell and an animal cell. Cite the source of your evidence for each label on your map Exit Slip See below Evaluate Extend/ Elaborate You Do Student products such as CER, DI Menus GRRM* Gradual Release of Responsibility Model Summative Assessment Key: 1. B 2. D 3. B 4. Answers will vary, but should include the following differences Additional structure in plants Additional Function Cell Wall Plant cells are rigid. Larger vacuole Storage of water Chloroplast Makes food (photosynthesis) Division of Academics – Department of Science 32 Summative Assessment: 1. A cell can be seen by looking through a microscope. Seeing which of these organelles would let you know that you are looking at a plant cell? A. mitochondria B. chloroplast C. cell membrane D. nucleus 2. In an animal, a muscle cell requires more energy than other cells. Because of this, you would expect to find more of which type of organelles in muscle cells than in other cells? A. vacuoles B. chloroplasts C. cell walls D. mitochondria 3. Jordan is making a model of a cell. Where should Jordan place all of the cell's organelles? A. the nucleus B. the cytoplasm C. the cell membrane D. the vacuole 4. Summarize the difference between plant and animal cells. Be sure to include the structure that make the cells different as well as the functions the cells can perform as a result of the different structures. Division of Academics – Department of Science 33 Organs Wanted Benchmark(s): SC.6.L.14.5: Identify and investigate the general functions of the major systems of the human body (digestive, respiratory, circulatory, reproductive, excretory, immune, nervous, and musculoskeletal) and describe ways these systems interact with each other to maintain homeostasis. Summary: Students will create “Wanted” posters for the various organs in the human body. Each poster will have to contain important information about that specific organ. Students will then have to group organs into “organ gangs” that work together (organ systems). Students will then have to explain why they grouped the organs together and how each “organ gang” helps maintain homeostasis in the human body. This lesson has been modified from the lesson at the following website: http://sciencespot.net/Media/organtrail.pdf KUD-Objectives: Students will Know: The organ systems of the human body and their functions Students will Understand: How the organ systems work together to maintain homeostasis Students will be able to Do: Explain the functions of the organ systems and how they work together to maintain homeostasis. Develop a “Wanted” poster Essential Question: Explain how the organ systems of the human body maintain homeostasis. Lesson Cycle: GRRM* 5E Engage I Do Explain Explore We Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Student products such as CER, DI Menus Activities Discuss with the students how different parts of a system can work together to accomplish a greater goal. Ask students to describe how this happens in the human body. Students will be assigned an organ and complete an “Organ Wanted Poster”. Students will research any necessary information required to complete the poster. Students will group their “Organ Wanted Posters” into “organ gangs” (organ systems) based on the functions organ and which other organs they work with. Students will explain the interactions among “organ gangs” and should focus on the system level functions and how interaction maintain homeostasis. Division of Academics – Department of Science 34 Extend/ Elaborate Evaluate You Do Research, Home Learning Students will discuss what would happen to the “organ neighborhood” (entire body) if one “organ gang” were removed. Exit Slip See assessment questions below as part of the student activity sheet. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 35 Student Activity Sheet Student Name:___________________________________________ Date:_________ Period:______ WANTED! There are many organs out there that are wanted by Sheriff Brainmatter. It’s your job as a Sheriff’s Deputy to help find these wanted organs! You will need to create “Organ Wanted” posters and then group the “Organ Wanted” posters into appropriate groups depending on the organ’s specialty. Organ Wanted Posters should include the following information: 1. Organ Name 2. Drawing and description of what the organ looks like. 3. Location in the human body 4. Wanted For (Function of the organ) 5. Known Associates (Organs it works with) Figuring out the “Organ Gangs”: Once you have finished your Organ Wanted Posters, organize the wanted posters into “organ gangs” (organ system) that work together. Place your grouped posters onto a bulletin board or whiteboard. Assessment Questions: Answer these question on separate sheet of paper or in your science journals. 1. Describe how you decided which organs should be grouped together. 2. Compare and contrast digestive system and circulatory system. 3. Describe how different organ systems (organ gangs) work together to maintain homeostasis in the human body. Division of Academics – Department of Science 36 Student Name:__________________________ Period:______________ Organ Wanted! Organ Name: ____________________________________________________________________________ Physical Description: ____________________________________________________________________ ________________________________________________________________________________________ Location:________________________________________________________________________________ Wanted For (Function): ___________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Know Associates (Organs it works with): ____________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Other Important Information:_______________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Division of Academics – Department of Science 37 Organizing Organisms Adapted from: http://oceanservice.noaa.gov/education/yos/curriculum/ecologybyinquiry.pdf Benchmark: SC.6.L.15.1: Analyze and describe how and why organisms are classified according to shared characteristics, with emphasis on the Linnaean system combined with the concept of Domains. Summary: Students will be engaged with grouping invertebrates and presented information about the diversity of life in the six kingdoms. Students will then explore various possibilities of grouping organisms based on shared characteristics and have the opportunity to classify a set of organisms into the six kingdoms. Students will then be presented with a DI menu to provide varied forms of creating a Claim-Evidence-Reasoning to explain their thinking about the essential question. Students can then enrich their understanding on the Linnaean system of classification by Prior to implementing this resource, teachers should ensure all needed images are separated for groups by activity (invertebrate grouping and kingdom identification). Additionally, the Invertebrate images can be found at the link above on pages 16-19 of the pdf. KUD-Objectives: Students will Know: The structure of the Linnaean system of classification. The basic characteristics of the Domains Bacteria, Archaea and Eukarya and the Kingdoms Protist, Fungus, Plant and Animal. Students will Understand: How and why organisms are classified according to shared characteristics Students will be able to Do: Describe the Linnaean system of classification. Classify organisms into Domains and Kingdoms. Essential Question: How and why are organisms classified? Division of Academics – Department of Science 38 Lesson Cycle: GRRM* 5E We Do Explain Explore Labs, Investigations, DI Opportunities Extend/ Elaborate You Do Activities Present cards of invertebrate drawings to small groups. Point out that one characteristic that can be used to separate the set of organisms into two groups is the presence or absence of wings noting that these two large groups still contain very different organisms (Neither an ant or an earthworm have wings). Present the “Domains and Kingdoms” table provided below or other source of similar information to review the domains and kingdoms and model how the information from the pictures can be used to classify all the invertebrates as animals. Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Student products such as CER, DI Menus Have students create their own groupings of the invertebrates. Students should note the members of larger groups (such as winged and wingless) and more narrow groups. Their final classified organisms should resemble how the Linnaean system of classification goes from broad Domains to specific species. Provide students with a set of mystery organisms that the students will classify into kingdoms. A sample set is provided below. Students will respond to the essential question based on their experiences in this lesson in the form of a ClaimEvidence-Reasoning. Students may select from a variety of creation/presentation styles to share their CERs such as a creating a poem/song, comic strip, poster, or RAFT written response. Research, Home Learning 1. If a scientist discovers a new species how do you think they classify it? 2. Given an organism of an unknown kingdom, members of which kingdom were the most difficult to classify? Why? GRRM* Gradual Release of Responsibility Model Evaluate Exit Slip Division of Academics – Department of Science 39 KEY Kingdom Identification (Note that students only need to identify the kingdom, but the organisms have also need identified.) 1. Anthrax - bacteria 2. L.casei – fungi 3. Kelp - protista 4. Leech - animal 5. Sea sponge - animal 6. Moss - plant 7. Bread mold - fungi 8. Mycorrhizae - fungi 9. Water lily - plant 10. Protazoa - protista 11. Blue-green algae - bacteria Summative assessment 1. C 2. Protista 3. C Division of Academics – Department of Science 40 Summative Assessment: 1. According to the modern classification system, which list is written correctly from least specific to most specific? A. species, genus, family, order B. phylum, class, genus, order C. class, order, genus, species D. phylum, order, species, family 2. Into which kingdom would you classify this euglena? 3. A scientists discovered a new species organism and is trying to classify it into one of the kingdoms. The possible kingdoms have been narrowed down to animal and fungi. Which of the following characteristics would be most helpful in determining the proper kingdom? A. Absence of a nucleus B. Absence of a chloroplast C. Absorbing nutrients from the environment D. Having many cells Division of Academics – Department of Science 41 Division of Academics – Department of Science 42 1 3 This organism can cause illness and death in humans and is among the simplest of living things. It reproduces asexually and can be found living in soil. Although it looks like an aquatic plant, this is actually a colony of many unicellular organisms. 2 4 Often found in yogurt, this helpful prokaryote is thought to improve the health of our digestive systems. Often viewed as a parasite, this blood sucker has been used in medical treatments including the pain management of chronic back pain. 5 Division of Academics – Department of Science 43 7 This is among the simplest members of its kingdom. It is a multicellular organism that has a body full of pores and channels allowing water to circulate. This circulating water does more than keep the sea creature wet. The moving water allows it to filter water of bacteria, protists, and debris from other living things as a source of nutrition. If you buy some bread and don’t eat it fast enough, this organism will gladly eat it for you. This unicellular organism can often develop strong hair-like structures on bread because of its durable cell wall. 8 6 The shortest member of its kingdom, this will grow on just about any surface as long as it has a moist environment and some sunlight. Division of Academics – Department of Science It’s not the plant in the picture, but the round objects growing on the roots. They provide an important benefit to the plant by turning nitrogen gas into a useable fertilizer for the plant. Be careful not to confuse this organism with a plant. It has a cell wall, but doesn’t have chloroplast. 44 10 9 You can see two of the specialized structures in this picture that should help identify it. While this organism is photosynthetic, it’s not a plant. We know this because it lacks a nucleus. 11 The organisms need a microscope to see, but they can move around and eat just like we do. Division of Academics – Department of Science 45 7th Grade Benchmark Resources Division of Academics – Department of Science 46 A Rocky Adventure http://www.cpalms.org/Public/PreviewResourceLesson/Preview/19289 From CPalms Benchmark(s): SC.7.E.6.2: Identify the patterns within the rock cycle and relate them to surface events (weathering and erosion) and subsurface events (plate tectonics and mountain building). Summary: To teach this lesson, begin with an engagement which consist of showing students samples of igneous, sedimentary and metamorphic rocks and ask them if they know why the rocks look different from each other. After a brief discussion, tell students that they are going to pretend to be a rock and they will be moving through the rock cycle and recording what is happening to them as they go. In the explore section of the lesson each student (representing a rock) will travel through the rock cycle and complete a travel information worksheet. Students will see the following stations set up around the room: Earth’s Interior, Soil, River, Oceans, Clouds, Mountains, and Volcanoes and the teacher will direct students to their starting station. Students will roll a paper dice which will gives them information about what happens to their rock which they will record on their travel sheet and then move on to the next station as directed by the instructions on the dice. As students are completing the activity, the teacher will move around the room asking students guiding questions which are provided for this activity. During the explain portion, students will create a cartoon drawing of their path through the rock cycle which they will share with other students. After the cartoons have been shared, the teacher will guide students through a class discussion on the rock cycle and provide any additional information that is missing from the students’ explanations. Students will then write a conclusion statement in their science journals. The elaboration/extension portion consists of students explaining how erosion can have both a positive and a negative effect on the rock cycle. The exit slip is three questions about the rock cycle. KUD-Objectives: Students will Know: The three main types of rocks are igneous, metamorphic and sedimentary. Students will Understand: The type of rocks that form depends on the conditions under which the material is located such as exposure to weathering and erosion on the surface of Earth and heat and/or pressure within the Earth. Students will be able to Do: Illustrate and explain the changes rocks undergo in the rock cycle. Essential Question: Differentiate between igneous, metamorphic and sedimentary rocks including what must occur in the rock cycle for them to form and what specific surface and subsurface events lead to changes in rock types. Division of Academics – Department of Science 47 Lesson Cycle: GRRM* 5E Engage I Do We Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Activities Show students a few samples of igneous, metamorphic and sedimentary rocks and ask them if they know why the rocks look different from each other. Tell the students that they are going to pretend to be a rock. They will be moving through the rock cycle and recording what is happening to them as they go. Go to the following website to find the "Ride the Rock cycle" worksheets and dice. (prepare ahead of time) http://www.sciencespot.net/Pages/classearth.html#Anchor6 Explore Guiding Questions: What is the rock cycle? What types of rocks are formed in the rock cycle? What causes the rocks to undergo changes? You Do Extend/ Elaborat e Explain Student products such as CER, DI Menus Research, Home Learning Students will work individually. Give each student a worksheet. Set up the following stations in the classroom: Earth’s Interior, Soil, River, Oceans, Clouds, Mountains, Volcanoes Prepare the paper dice for each station. Send equal numbers of students to each station. Each student will roll the paper dice and record what happened to them (listed on the dice). They will then go to whatever station is listed on the dice. They will roll the dice at the new station, record the information and move as directed until their worksheet is filled. Analyze and Conclude: Students will create a cartoon drawing of their path through the rock cycle. Class Discussion: how long the cycles would take, discuss types of rock and what can happen to them Comparing and Contrasting: Students will share their “cycle” with another student in the class Check for Understanding: Have students write conclusion statements in their science journals. Students should discover the following: The rock cycle is a continuous pathway of changing rock. There are forces on the surface of the Earth and underneath the Earth that cause these changes. Teacher Explanation: Rocks are continually changing. Forces inside the earth bring them closer to the surface and forces on the earth sink them back down. Have the students explain how erosion can have both a positive and a negative effect on the rock cycle. Division of Academics – Department of Science 48 Evaluate Exit Slip Compare and contrast the three types of rocks including how they are each formed. GRRM* Gradual Release of Responsibility Model Summative Assessment Key: 1. C 2. D 3. B Division of Academics – Department of Science 49 Summative Assessment: 1. Many small rocks fall to the bottom of the ocean or a river. A scientist notices rock layers that have formed on the ocean bottom. What type of rock is this? a. Lava b. Igneous c. Sedimentary d. Metamorphic 2. When heat and pressure transform a rock type into another rock type, what rock type is formed? a. Diamonds c. Sedimentary b. Metamorphic d. Igneous 3. The diagram below shows a rock sample and an identification key. After observing the structure of this rock, how should it be classified? a. volcanic b. sedimentary c. metamorphic d. igneous Division of Academics – Department of Science 50 Dig It! (A Thematic Integrated Geology Unit) From CPALMS http://www.cpalms.org/Public/PreviewResource/Preview/26845 Benchmark(s): SC.7.E.6.4: Explain and give examples of how physical evidence supports scientific theories that Earth has evolved over geologic time due to natural processes. SC.7.E.6.3 : Identify current methods for measuring the age of Earth and its parts, including the law of superposition and radioactive dating. SC.7.N.1.5 :Describe the methods used in the pursuit of a scientific explanation as seen in different fields of science such as biology, geology, and physics. MAFS.6.NS.3.8 :Solve real-world and mathematical problems by graphing points in all four quadrants of the coordinate plane. Include use of coordinates and absolute value to find distances between points with the same first coordinate or the same second coordinate LAFS.68.WHST.1.2 :Write informative/explanatory texts, including the narration of historical events, scientific procedures/ experiments, or technical processes. a. Introduce a topic clearly, previewing what is to follow; organize ideas, concepts, and information into broader categories as appropriate to achieving purpose; include formatting (e.g., headings), graphics (e.g., charts, tables), and multimedia when useful to aiding comprehension. b. Develop the topic with relevant, well-chosen facts, definitions, concrete details, quotations, or other information and examples. c. Use appropriate and varied transitions to create cohesion and clarify the relationships among ideas and concepts. d. Use precise language and domain-specific vocabulary to inform about or explain the topic. e. Establish and maintain a formal style and objective tone. f. Provide a concluding statement or section that follows from and supports the information or explanation presented. Summary: To teach this lesson, begin with an engagement which consists of students viewing an assortment of pictures around the room such as images of extinct creatures, actual paleontological dig sites, and areas on Earth where rock layers are visible. A short movie clip of Jurassic Park will be shown to demonstrate an example of a paleontologist and draw on potential prior knowledge. Students will be told that they will be paleontologists for this activity, learning how to uncover fossils and determining their relative age based on the relative age of the rock layer in which they were found. In the explore section of the lesson, students will complete an investigative activity, Digging in the Tub to determine the relative age of rock layers and fossils. During this activity, students will use appropriate scientific techniques that will emulate the work of paleontologists, including excavation and data collection. Students will analyze their data and class data during the explain portion of the lesson using a large table and graph at the front of the room. Students will participate in a discussion about what students learned in the activities and the teacher should revisit guiding questions to ensure that students have mastered the concepts. Students will complete a CER (Claim, Evidence, Reasoning) for the following question: How do you know which rock layer and/or fossils is the oldest and which is the youngest? The elaboration/extension portion offers several options such as students investigating an additional dig involving models of various animals to simulate an evolution discussion, or artifacts of different cultures could be buried and then unearthed by other students who would then use their knowledge of cultures to determine the artifact's origin(Social Studies connection). The exit slip requires students to analyze a diagram of rock layers and answer questions. KUD-Objectives: Students will Know: Division of Academics – Department of Science 51 The Law of Superposition states that in horizontal rock layers the lower layers of rock are older than the upper layers of rock. Students will Understand: A geologic event such as folding or faulting of rock layers can break and or shift the horizontal rock layers. Students will be able to Do: Using the Law of Superposition, determine the relative age of rock layers and fossils and explain the effect that folding, faulting or other geologic events can have on determining the relative age of rocks and fossils. Students will apply appropriate scientific techniques that will emulate the work of paleontologists, including excavation and data collection. Students will solve a real-world problem by graphing points on a coordinate plane and finding the distances between the points. Students will write an informative text on a semi-imagined experience using effective technique, well chosen facts, and domain specific vocabulary. Essential Question: Apply the Law of Superposition to determine the relative age of rock layers and fossils and demonstrate an understanding that evidence exists to support that Earth has evolved over time. Division of Academics – Department of Science 52 Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration We Do Labs, Investigations, DI Opportunities Activities The teacher can be as creative/dramatic as they want setting the stage for the project. The room can be filled with images of extinct creatures, actual paleontological dig sites, and areas on Earth where rock layers are visible. Students can be told that they will be paleontologists for the next few days, learning how to uncover fossils and determining their relative age based on the relative age of the rock layer in which they were found. Teachers can show a short (appropriate) clip of Jurassic Park or simply show an image of Alan Grant from the movie to demonstrate a popular example of a paleontologist and draw on potential prior knowledge. Teachers may choose to explain the difference between archaeologists and paleontologists. Guiding Questions: (for teacher and to be used during activities) What does the depth of a rock layer or fossil tell you about its age? How do paleontologists ensure accurate data collection during an excavation? How could the conditions of a real paleontological dig site be described? Investigate: What can fossils tell scientists about the evolution of the Earth in the area they are found? Explore Activity #1 Digging in the Tub (Teacher instructions attached) Dig It lesson plan Procedures (see attached document) Dig It Investigation Sheet (see attached document) Examples of images are also attached that could be used to print, laminate, and cut (rather than puzzles) *Teachers should demonstrate how to set up and use the grid on top of the plastic tub *Make sure students document the exact location of each piece (including depth) as they find it on the grid and graph paper *Idea: the fossils kits with the tub of sand work well for this activity Activity #2 Big Dig-(optional) Teacher instructions attached Dig It lesson plan Procedures (see attached document) Division of Academics – Department of Science 53 Student products such as CER, DI Menus Dig It Investigation Sheet (see attached document) Analyze: (Dig It Investigation Sheet is attached) Explain Teachers can use a teacher created chart or graph paper for students to document the location of their fossils. Interpretations of the relative age of each fossil should be documented. A class-size version of the graph/chart should be made available to transfer each group's data so everyone can see. The format of the Journal writing can be dependent on the teacher. Class Discussion: Students must refer to their data and the class data. The teacher should revisit guiding questions to ensure that students have mastered the material. Students will complete: A CER (Claim, Evidence, Reasoning) for: How do you know which rock layer and/or fossil is the oldest and which is the youngest? Or You Do Evaluate Extend/ Elaborate Research, Home Learning Exit Slip Journal Entry Explain what you learned in this activity with the focus on how to use the Law of Superposition to determine the relative ages of rock layers and fossils. Possible extension would be an additional dig involving models of various animals to simulate an evolution discussion. Teachers could obtain a model/puzzle skeleton of a bird, lizard, and dinosaur then bury each and have the students compare the bones and physical structures and develop a thesis on which animal most likely evolved from the dinosaur. Or discussion could happen using images Teachers could also involve Social Studies and have students create/find artifacts related to various cultures they studied. These artifacts could be buried and then unearthed by other students who would then use their knowledge of the cultures to determine the artifact's origin. Create a 3-D model of rock layers including fossils, index fossils, intrusions, extrusion, folds and faults. Students must label all rock layers and parts and explain which layers of rocks are the oldest and youngest and which fossils are considered index fossils. Why? Analyze diagram and answer questions. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 54 Summative Assessment Key: 1. A 2. B 3. D 4. D Division of Academics – Department of Science 55 Summative Assessment: 1. The relative age of a rock is: A. its age compared with the ages of other rocks. B. less than the age of the fossils the rock contains. C. the number of years since the rock formed. D. its age based on how much carbon-14 the rock contains. 2. Which method is most appropriate for finding out which of the layers to the right is the youngest? A. Radioactive dating using half-life B. Applying the Law of Superposition C. Analyzing the color of the layers D. Measuring the thickness of the layer 3. Two fossils that appear to be from the same type of organism are found in two different layers of rock. The layers of rock are shown below. Which can be determined from the location of the fossils? A. the prey of the organisms B. the predators of the organism C. the cause of death for each organism D. the relative age of each organism 4. Base your answer to this question on the geologic cross section below. Overturning has not occurred. The dike and sills shown in the cross section are igneous intrusions. Which of these rock layers is the oldest? Division of Academics – Department of Science 56 Student version/handout Division of Academics – Department of Science 57 Division of Academics – Department of Science 58 Division of Academics – Department of Science 59 Dig It! Teacher Instructions Part 1: Digging in the Tub Materials -one clear plastic tub per group (approx. size of large shoe box) -playground sand, soil, loose clay, pebbles (enough to fill each tub about ¾ of the way) -wooden puzzles with 10-12 big pieces (with animal or plant images), alternatively could print and laminate images on card stock and cut out -plastic spoons (sturdy), at least one per group -small paint brushes, at least one per group -string -tape (masking tape to secure the string) -graph paper (optional) -ruler (one per group) Procedures Prior to student arrival (and in between classes as necessary) -pour a small amount of sand into the tub -randomly place a puzzle piece on top of the layer of sand -pour soil into the tub, and place another puzzle piece on that layer of soil, repeat using different ground covering materials until there are enough layers so that each member of the group will be able to find at least one puzzle piece *if desired, can use cardboard or other material between layers to create a fold/fault line During the Investigation -encourage students to use tools appropriately (as they saw/read about prior to investigating) -encourage students to use string to create a coordinate grid on top of the plastic tub prior to digging and then document the exact location of each piece (including depth) as they find it, either on graph paper or a grid Division of Academics – Department of Science 60 Part 2: Big Dig (optional) Materials -large sandbox/in ground sand pit, use multiple materials to create the layers (ex. soil, sand, pebbles, clay, etc…) -large wooden puzzle pieces (suggest dinosaurs, ex bcbones.com) -string -masking tape to secure the string -garden trowels (one per group) -large paint brushes (one per group) -graph paper (optional) -meter sticks (one per group) Procedures Prior to student arrival (and in between classes as necessary) -bury the puzzle pieces randomly throughout the sandbox/pit, making sure that they are at various depths and distances from each other -bury enough pieces so that each student will find at least one *throughout the day, the digging of the students will create natural folds and faults in the layers so that different classes will find different layers at different depths, this could be shared later to demonstrate changes over time During the Investigation -explain to the students that the sandbox/pit represents a very large dig site (entire state, country, etc… so that items at the same depth may not be in the same rock layer) -encourage students to use tools appropriately (as they saw/read about prior to investigating) -encourage students to use string to create a coordinate grid on top of the pit/sandbox prior to digging and then document the exact location of each piece (including depth) as they find it, either on graph paper or a grid Division of Academics – Department of Science 61 Dig It! Investigation Sheet Part 1: Digging in the Tub Draw below what layers you observe when viewing the tub from the side Excavation – use string to create a coordinate grid on the top of your tub similar to the one below Data - On the chart below, indicate the location of your fossils as viewed from above (be sure write the depth, in cm, of the fossil also next to each point) Division of Academics – Department of Science 62 Analysis – Which fossil was the oldest? How do you know? _____________________________________ ____________________________________________________________________________ What evidence can you gather from your excavation that the area you were digging in has changed over time? ________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ______________________________________________________________ Daily Journal (describe below your “experience” during the dig and your scientific findings): ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ________________________________________________ ___________________________________________________________________________________ _____________________________________________________________________ Division of Academics – Department of Science 63 Part 2: Big Dig Excavation – use string to create a coordinate grid on the top of your tub similar to the one below Data - On the chart below, indicate the location of your fossils as viewed from above (be sure write the depth, in cm, of the fossil also next to each point) Draw below what layers you believe existed in the area you were digging Division of Academics – Department of Science 64 Analysis – Which fossil was the oldest? How do you know? _____________________________________ ____________________________________________________________________________ What evidence can you gather from your excavation that the area you were digging in has changed over time? ________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ______________________________________________________________ Daily Journal (describe below your “experience” during the dig and your scientific findings): ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ _______________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ________________________________________________ ___________________________________________________________________________________ _____________________________________________________________________ Division of Academics – Department of Science 65 EXIT TICKET Name ___________________________________________ Date _______________________________________________ Period __________________ Law of Superposition – younger rocks lie above older rocks in an undisturbed sequence. Fossils are the same age as the rock layer in which they are found, with older fossils in the older rock layers. Using the diagram and key below, answer the following questions: 1. What fossil is the oldest? How do you know? 2. What fossil is the youngest? How do you know? 3. Which has been around longer: birds or reptiles? How did you know? 4. Using what you know about how rocks formed, how did the intrusion form? 5. There is a layer of extrusive rocks in the diagram, how did it get there? What event happened? 6. Which is younger, the intrusion or rock layer C? How do you know? 7. There is grass growing on top of all the layers, yet there are remains of sea life below, how is that possible? Division of Academics – Department of Science 66 Title: Plate Tectonics Benchmark(s): SC.7.E.6.5 Explore the scientific theory of plate tectonics by describing how the movement of Earth’s crustal plates causes both slow and rapid changes in Earth’s surface, including volcanic eruptions, earthquakes, and mountain building. Summary: This lesson is designed to both provide students with direct instruction on the Theory of Plate Tectonics as well as to give students a chance to explore plate tectonics through a hands on lab. If the teacher feels as if their students would be better served to do one or the other, this lesson can definitely be modified. As it has been written, the lesson starts with an introduction to plate tectonics through an engaging video (embedded in the PowerPoint that shows clips of different types of geologic activity. The students can be prompted before the video with a guiding question. For the “I do” portion after the video, students will take guided notes (attached) as the teacher leads them through a PowerPoint. Students will copy the highlighted words into blanks on their guided notes. Periodically, students will also answer questions on the left side of their journal (when prompted.) The left side questions are meant to be checks for understanding to assess whether students are following along. During the “we do” portion of the lesson, students will be paired or grouped together to complete the “Plate Tectonics Lab.” This lab takes students through a number of steps to illustrate the difference between plate boundaries through the manipulation of a Milky Way bar (mini) or modeling clay. As the students complete each part of the lab, they will answer the questions associated with each boundary. At the end of the lab they will answer the conclusion questions. If time permits, students will complete the independent practice worksheet on their own (if there is no time they can do this for homework.) For lesson closure, students will be given approximately 10 minutes to complete their exit slips. KUD-Objectives: Students will Know: Students will know that the Earth’s crust is broken into plates and that these plates move due to convection currents in the Earth’s mantle. They will also know how to identify different types of plate boundaries by the direction that they are moving. Students will Understand: Students will understand that different types of plate boundaries cause different landforms and geologic activity. They will also understand that most geologic activity on Earth occurs at the boundaries of tectonic plates. Students will be able to Do: Explain why plate movement occurs on Earth and identify which types of plate boundaries cause certain landforms and geologic activity. Students will also predict types of geologic activity they might find at a particular plate boundary. Essential Question: How does Earth’s surface change over time? Division of Academics – Department of Science 67 Lesson Cycle: GR 5E Suggested RM* Activities I Do Formative Assessment Probe, Video clip, Teacher Demonstration Activities Introduction: One-minute video placed in the beginning of the PowerPoint to engage students on how plate tectonics affect us. In the event that the embedded video does not play properly, you can find the video through Discovery Education titled: An Introduction to Continental Drift “I do”: PowerPoint presentation on plate tectonics with guided notes (attached.) Students will copy the highlighted word into the blanks in their guided notes and then answer the check for understanding questions on the left side of the journal when prompted. Evaluate You Do http://classjump.com/p/petergaebler/documents/Plate_Tectonics.ppt Labs, Investigations, DI Opportunities “We do”: Students will complete the Plate Tectonics lab in pairs or groups. The lab uses 2 small Milky Way bars per group for materials. It can be adapted to be done with modeling clay as well. Students will answer the questions as they go along with the lab. Student products such as CER, DI Menus “We do”: Students will answer the conclusion questions on the plate tectonics lab collaboratively. Research, Home Learning “You do”: If time allows, students can work on the independent practice worksheet on plate tectonics (attached.) If time doesn’t allow during class, this can be assigned for homework. Exit Slip Closure: Exit slip (attached) Extend/ Elaborat e Explain We Do Explore Engage To download the PowerPoint presentation, copy and paste the below link into your web browser: GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 68 Exit Slip Name _______________________________________ Date _______________ Period __________ 2. The Andes Mountains are the longest of all of the 1. Imagine that far away in the universe in an world’s continental mountain ranges. Which of the undiscovered location, there is a planet very following correctly explains how this mountain range was similar to Earth. However, the core of this formed? planet is not very hot, and its mantle is uniformly cool rock. Temperature differences influence the movement of materials within Earth. A planet with a cool mantle should experience different levels of activity on its surface. How would this be most likely to influence activity on this planet’s surface? A. This planet would still experience movement of geologic features, such as volcanoes, earthquakes, and mountain building. B. If the mantle did not have cool rock sinking and hot rock rising, there would be even more volcanic eruptions, earthquakes, and mountain building. C. If the mantle did not have cool rock sinking and hot rock rising, there would not be hot magma rising to the surface as volcanic eruptions, but tectonic plates would still move past each other causing earthquakes and mountain buildings. D. If the mantle did not have cool rock sinking and hot rock rising, there would not be hot magma rising to the surface as volcanic eruptions, and the flow responsible for moving the tectonic plates would not occur, so the continents would probably remain in one location. Which of the following is most responsible for the formation of new crust at the edge of a tectonic plate? a. mountain building at a continent-continent convergent boundary b. magma rising up from the mantle at a divergent boundary. c. two tectonic plates sliding past one another at a transform boundary. d. Subduction of one oceanic plate under another at a convergent boundary. 5. According to the Theory of Plate Tectonics, the movement of plates can form Mountain ranges and valleys. Within the next 100 million years, the Great Rift Valley in Africa will most likely become a a. Folded mountain range b. Flat eroded plain c. Desert covered with lava d. Wider and deeper valley Tectonic plates collided, and Earth’s crust was pushed upwards b. Tectonic plates separated, and exposed magma boiled upwards. c. Tectonic plates slid past each other and pushed material upwards. d. Tectonic plates collided, and thousands of volcanoes were formed. a. 4. The Great Rift Valley in Africa is a land feature on Earth’s surface caused by the movement of crustal plates. Continued movement of the plates is gradually making the rift deeper. How are the plates around the Great Rift Valley moving? a. The plates are colliding. b. One plate is sliding beneath a less dense plate. c. The plates are grinding against one another along a fault. d. The plates are spreading apart and moving in opposite directions. 6. The youngest rocks on the ocean floor are typically located near what feature? a. A mid-ocean ridge b. A continental shelf c. An abyssal plain d. A subduction trench, Division of Academics – Department of Science 69 Name______________________________________ Date_____________________ Period_______ Plate Tectonics Lab BACKGROUND: The top solid layer of the Earth is called the lithosphere. It is made of the crust and the top solid part of the mantle. It is broken into small sections called plates. The plates fit together like a puzzle on the surface of the Earth but they aren’t connected. Each plate floats independently on the asthenosphere (a molten plastic-like portion of the mantle below the lithosphere). Below the lithosphere and asthenosphere lies the rest of the mantle and the core (as pictured above). The location where two plates are touching is called a plate boundary. Plates interact with each other at this boundary. If plates are moving into each other, the boundary is called a convergent boundary. If the plates are moving away from each other, the boundary is a divergent boundary. If one plate is sliding past the other plate, the boundary is called a transform boundary. During this activity you will model all of these boundaries while comparing the layers of a Milky Way candy bar to the lithosphere, asthenosphere, and mantle of the Earth. PROCEDURE: FIRST BOUNDARY Obtain two small Milky Way candy bars. DON’T eat either of them yet!! (you will each get to eat one later) Try to divide one of your candy bars in half without squishing it (as much as possible) (don’t do this to both candy bars…save one for later) 1. Look at the 3 main layers of the Milky Way. In the boxes below, just describe each of the layers on the candy bar (For example, the top chocolate layer is hard, dark, waxy, and breaks into pieces easy, etc.) Division of Academics – Department of Science 70 2. Which of the layers of the Milky Way candy bar is the most like the lithosphere? How are they similar? 3. Which of the layers of the Milky Way candy bar is the most like the asthenosphere? How are they similar? 4. Which of the layers of the Milky Way candy bar is the most like the lower mantle? How are they similar? 5. Does this candy bar have layers that represent the inner and outer cores? Unwrap the other candy bar. Press on the top of the candy bar lightly with your fingernail in several spots to make a few cracks across the top. The broken chocolate pieces represent tectonic plates. Hold each end of the candy bar with your thumb and forefinger SLOWLY stretch the candy bar, pulling it no more than 1/2 inch. 6. Which type of plate boundary did you create? Why do you say this? Division of Academics – Department of Science 71 7. Draw a picture of what you see in the box below. 8. If the caramel beneath was really magma from the asthenosphere of the Earth. Where would the newest crust form? Near the outer edges of the candy bar or where the candy bar split? Why? SECOND BOUNDARY Slowly push the stretched candy bar back together and keep pushing until it crumples the surface. You should see the chocolate pieces crumble, become “up-lifted,” or slide beneath one another. 9. Which type of plate boundary did you create? Why do you say this? 10. Draw a picture of what you see in the box below. Division of Academics – Department of Science 72 11. What do you think the “up-lifted” pieces of chocolate represent if this was the real lithosphere rather than a candy bar? (What parts of the crust are lifted up on Earth) Why do you say this? 12. On Earth, the plates actually get uplifted or they get pushed beneath each other. What do you think would happen to a plate that was being pushed underneath another plate and pushed into the asthenosphere/mantle? (Remember the asthenosphere/mantle is molten hot). Conclusion: 1. State the Theory of Plate Tectonics. 2. What are the evidences here on Earth to support the Theory of Plate Tectonics? 3. Can you use a Snicker’s candy bar to model the Theory of Plate Tectonics? Explain why or why not. 4. Why is the Earth’s lithosphere considered a giant jigsaw puzzle? 5. List and define the three types of tectonic plate boundaries. Division of Academics – Department of Science 73 6. Our crust is divided into many plates. Using the map below, color or highlight the plate boundaries using three separate colors. Fill in the key below with the colors you're using. 7. Using your map, draw a star where there would be new crust. 8. Using your map, draw a triangle where there would be mountains. 9. Using your map, draw a circle where there would be earthquakes due to a fault line. 10. Locate Florida. What's the name of the tectonic plate that we live on? 11. Locate Australia. What's the name of the tectonic plate that Australians live on? 12. In California, the San Andreas Fault causes many earthquakes. Locate California on the world map. Which two plates grind against one another to cause these earthquakes? Division of Academics – Department of Science 74 13. Haiti is located just southeast of Florida. In 2010, Haiti experienced a terrible earthquake. Why do you think that happened? 14. The Theory of Continental Drift states that all of the continents were, at one point, joined together as one in a supercontinent called Pangaea. Over time, Pangaea broke apart, due to plate tectonics. Do you think that the continents could ever be joined together again into another supercontinent? Why or why not? Explain in complete sentences. Division of Academics – Department of Science 75 Name____________________________________ Date___________________ Period______ Plate Tectonics Independent Practice 4. In your own words, state the theory of plate tectonics? 5.Describe what happens when two plates carrying oceanic crust collide. 6. Describe what happens when two plates carrying continental crust collide 7. Describe what happens when a plate carrying oceanic crust collides with a plate carrying continental crust. 8. Explain what force caused the movement of the continents from one supercontinent to their present positions. 9. A scientific _________________ is a well-tested concept that explains a wide range of observations. 10. Breaks in Earth’s crust where rocks have slipped past each other are called _________________. 11.The lithosphere is broken into separate sections called _________________. 12. A(n) _________________ is a deep valley on land that forms along a divergent boundary. 13. The geological theory that states that pieces of Earth’s crust are in constant, slow motion is called __________________________. Use the figure below to answer the questions that follow: 1. Name and describe the feature of the ocean floor shown at A. 2. What type of boundary is shown at B? ___________________________ 3. Where is the newest crust found in this diagram? How do you know? Division of Academics – Department of Science 76 4. What process is shown at C? Why does this occur? 5. Why does the oceanic crust travel underneath the continental crust? When one crust travels underneath another what is this called? 6. Why are there mountains located on the coastline? What type of boundary did they form on? Division of Academics – Department of Science 77 LEFT SIDE NOTES Draw each type of boundary Divergent Transform Boundary Type ___________________________ Convergent Essential Question _______________________________________________________ PLATE TECTONICS – Rigid upper _________________________ broken. – Large slabs of rock are called ________________________. – Move in different ______________________________. CAUSES OF PLATE MOTIONS – Convection currents in Earth’s mantle _____________________ plates. – Convection transfer of energy between earth’s hot ________________ and its cooler ______________________. BOUNDARIES • There are three main types of plate ___________________________. • Boundaries are where one plate meets another. • Most ______________________ activity happens along plate boundaries. TYPES OF BOUNDARIES Transform – Two plates ______________ horizontally past each other. – Creates _______________________ in crust. – Creates _________________________________. Boundary Type __________________________ Convergent – Two plates move _______________________ each other. – When one plate goes down beneath the other and melts in the mantle it is called _________________________. – ______________________ are created at subduction zones. – These boundaries create many __________________ and ______________________________. Divergent – Tectonic Plates move apart. – _________________________________ and mid ocean ridges form. – New Crust forms when _______________________ cools. Boundary Type __________________________ Boundary Type ___________________________ Division of Academics – Department of Science 78 The Electromagnetic Spectrum http://www.cpalms.org/Public/PreviewResourceLesson/Preview/18939 From CPalms Benchmark(s): SC.7.P.10.1: Illustrate that the Sun’s energy arrives as radiation with a wide range of wavelengths, including infrared, visible, and ultraviolet, and that white light is made up of a spectrum of many different colors. Summary: To teach this lesson, begin with an engagement which consist of placing students in groups of three and showing students a NASA picture of the Sun’s radiation going to Earth and the Earth’s magnetosphere protecting/shielding the Earth and then ask questions which students will answer on a white board. In the explore section of the lesson each group will complete an activity of arranging information cards of different types of electromagnetic radiation on the electromagnetic spectrum. The teacher will have a set of guiding questions that she/he will ask the groups as they are working on the activity. After all the groups have arranged their cards, each group will write the answers to a set on questions on the white board and then the teacher will randomly call on students from each group to answer the questions. During the explain portion, the teacher and students will have a discussion about what they learned in the activity and also revisit their responses to questions from the engagement portion of the lesson. The teacher will provide any information that the students need in order to have a better understanding of the electromagnetic spectrum. The students will then create a visual that shows they have mastered the electromagnetic spectrum including that the different types of radiation (waves) are arranged by wavelength (longest to shortest), the frequency (lowest to highest) and energy (lowest to highest). The visual should also include the color spectrum of visible light and the different uses of each type of radiation. The elaboration/extension portion consists of students doing research about two questions: Why is visible light the only part of the electromagnetic spectrum we can see without special equipment? and Why is UV radiation dangerous to us but not radio waves? The exit slip is three questions about the electromagnetic spectrum. KUD-Objectives: Students will Know: The Sun’s energy arrives as radiation which consists of a variety of types of electromagnetic energy. Students will Understand: The energy from the Sun is arranged on the electromagnetic spectrum based on the wave’s wavelength. Each type of electromagnetic radiation has specific uses and/or applications. Students will be able to Do: Compare and contrast the types of radiation in terms of their arrangement on the electromagnetic spectrum and their common uses and/or applications. Engage Essential Question: Compare and/or contrast the variety of types of radiation present in radiation from the Sun. Lesson Cycle: GRRM* 5E Suggested Activities Activities I Do Formative Students are in groups of 3. Number each student from 1 to 3. Assessment Show students a NASA picture of the Sun’s radiation going to Earth and the Earth’s magnetosphere protecting/shielding the Earth. (see Probe, Video attachment). clip, Teacher Ask: What event is this picture showing us? Demonstration 2s write down all of the groups’ observations on the white board. Randomly call on students to share groups’ answers. Division of Academics – Department of Science 79 We Do Explore Labs, Investigations, DI Opportunities Student products such as CER, DI Menus Guiding Questions: What types of energy are coming from the Sun? Based on what piece of information did your arrange the cards? Which electromagnetic waves have the longest wavelengths? Which electromagnetic waves have the shortest wavelengths? Activity: (Materials are attached to the document) Ask: Many forms of energy (or radiation) come from the Sun. What are they? 3s add their groups’ answers to the observations on the white wipe boards. Give each group the strip of paper depicting a wave and the 7 information cards about electromagnetic waves. ( see attachment) Tell the students that they are to read the cards and put them in order along the wave picture. Ask: What specific information did your groups use to organize cards? What other information did the cards provide? After all the groups have arranged their cards, 1s answer the following questions on the white wipe boards. Which electromagnetic wave has the longest wavelength? Which electromagnetic wave has the shortest wavelength? What wave property increased as the wavelength decreased? What happens to the energy as the wavelength decreases? Randomly call on students to share the groups’ answers. Direct Instruction/Discussion: The electromagnetic spectrum is the entire range of electromagnetic waves arranged according to their wavelengths. Radio waves have the longest wavelengths and gamma rays have the shortest. As the wavelengths get shorter, the frequencies get higher and the energy het higher. All of these electromagnetic waves come from the Sun (but they also come from other sources as well) You Do Extend/ Elaborate Explain Returning to the NASA picture in the engagement activity: The Earth’s magnetosphere (magnetic fields surrounding the Earth) acts like a shield, protecting the Earth from harmful radiation such the Gamma rays. Other radiation (infrared, visible light and UV radiation) are able to penetrate the magnetosphere to enter our atmosphere. Research, Home Learning Students can complete a visual that shows the electromagnetic spectrum with the different types of waves (energy) arranged based on wavelength from longest to shortest and frequency from lowest to highest. The visual should also include which ends of the electromagnetic spectrum have the lowest or highest amounts of energy. Students can also include different types of uses for each type of energy. Research: Why is visible light the only part of the electromagnetic spectrum we can see without special equipment? Why is UV radiation dangerous to us but not radio waves? Division of Academics – Department of Science 80 List the types of the Sun’s radiation from longest to shortest wavelength. Explain what happens to the frequency of the waves as the wavelength decreases. Identify which colors of visible light have the longest and shortest wavelengths. GRRM* Gradual Release of Responsibility Model Evaluate Exit Slip Division of Academics – Department of Science 81 Summative Assessment: 1. Astronauts on a spaceship in outer space notice their instruments detect energy from the Sun. Which of the following provides evidence that the Sun’s energy is moving through outer space? A. Molecular collisions of visible light and infrared radiation B. Electromagnetic radiation in the form of radio waves C. Electromagnetic radiation in the form of matter D. Molecular collisions of gas atoms Why did you choose your answer? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________ 2. The light that you see is part of a group of waves called the electromagnetic spectrum. They have different lengths, as shown below. Which of the following is true about radio waves? A. the same frequency as microwaves. They have B. They have a lower frequency than microwaves. C. They have a higher frequency than microwaves. D. Their frequency varies; it can be higher or lower than that of microwaves. Why did you choose your answer? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________ 3. When solar radiation crosses space and moves toward Earth, it consists of many types of radiation. Together, these radiation types are known as the electromagnetic spectrum. Which of the following properties differentiates among the different types of radiation found in the electromagnetic spectrum? a. Amplitudes c. Temperatures b. Wavelengths d. Chemical makeup Why did you choose your answer? ___________________________________________________________________________________________ ___________________________________________________________________________________________ ___________________________________________________________________ Division of Academics – Department of Science 82 Student version/handout Image above from NASA website: http://sec.gsfc.nasa.gov/popscise.jpg NASA image is NOT copyrighted – it may be used for educational or informational purposes; however, acknowledge NASA as source of image. To see all of NASA’s Image Use Policy, please visit the following website. http://www.nasa.gov/audience/formedia/features/MP_Photo_Guidelines.html Radio Waves Gamma Rays Microwaves Used for communication. Given off by radioactive Used for satellite decay and exploding communication and Lowest frequency and stars. cooking food. lowest energy waves. Waves with the highest Low frequency, low With wavelengths frequency, the highest energy waves. measuring over 30cm energy, and the shortest (some can be more than With wavelengths wavelengths of all the 1 km). measuring between electromagnetic waves. 1mm and 30cm. Division of Academics – Department of Science 83 Infrared waves Given off by vibrating molecules in any matter (including YOU). Detected and felt as heat. With wavelengths shorter than microwaves. X Rays Able to go through soft tissues. High frequency, high energy waves. With wavelengths longer than the Gamma rays. Ultraviolet waves Causes skin cells to make vitamin D. Used to kill bacteria in hospitals, on food, … With wavelengths longer than the X rays. Also called ultraviolet radiation or uv light. Visible light The only part of the spectrum we can see. With wavelengths shorter than infrared and longer than ultraviolet. Division of Academics – Department of Science 84 Cut these two wave strips out and tape together for one long one to give to each student group. Use with the 7 cards. On the previous page, cut up the table to create the 7 cards – one set per group. Division of Academics – Department of Science 85 Wave Behaviors Benchmark(s): SC.7.P.10.3 Recognize that light waves, sound waves, and other waves move at different speeds in different materials. SC.7.P.10.2 Observe and explain that light can be reflected, refracted, and/or absorbed. Summary: To teach this lesson, begin with an engagement which consists of showing students a pencil in a beaker of water and asking them to explain why the pencil appears broken. Also, show the Study Jam Video-Light Absorption, Refractions and Reflection and have a short discussion on wave behaviors. In the explore section of this lesson students will complete light wave behavior activities at five different stations and complete questions for each activity. During the explain portion, students will participate in a class discussion and share their findings for each activity. The teacher will provide a summary of reflection, refraction and absorption of light by providing notes and examples of each type of wave behavior. Then students will complete anchor charts for reflection, refraction and absorption of light. The elaboration/extension portion consists of students researching reflection, refraction and absorption of sound waves in order to create a presentation which demonstrates each type of wave behavior for sound along with an explanation for each one. The exit slip is four questions about the refection, refraction and absorption of light and sound waves. KUD-Objectives: Students will Know: Light waves, sound waves and other waves move at different speeds in different materials. Students will Understand: Light can be reflected, refracted, and/or absorbed. Students will be able to Do: Compare and contrast reflection, refraction and absorption of light. Demonstrate and explain real world examples of reflection, refraction and absorption of light. Essential Question: How does light interact with matter? Division of Academics – Department of Science 86 Lesson Cycle: GRRM* 5E We Do Explore Labs, Investigations, DI Opportunities Evaluate Extend/ Elaborat e Explain Student products such as CER, DI Menus You Do Activities Place a beaker containing water and a pencil at each group’s table. Ask students to write down observations about how the pencil appears and why it appears that way. Show students a Study Jams Video: Light Absorption, Reflection and Refraction Have students revisit what they wrote about the pencil in the water and allow them to make any changes they think is necessary. Ask students to share their observations and explanations about the appearance of the pencil. Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Research, Home Learning Exit Slip Ask students to explain absorption, reflection and refraction of light.(short discussion) Guiding Questions: (teacher will walk around while students are completing the activities and ask these questions) 1. Do waves such as light move at the same speed through air (gas) and liquid? 2. What is refraction of light and why does it occur? 3. What occurs during reflection of light? 4. What is absorption of light? 5. Activities: Wave Behaviors (five stations) Student worksheet with procedures is attached at the end of this document. Students will rotate through five stations with six minutes at each station. Students must answer all questions in complete sentences. Class Discussion: Students will share their findings with the class during a discussion. The teacher can guide students understanding of wave behaviors by asking them to also think about the demo and video in the engagement portion of this lesson. The teacher should provide students with appropriate definitions and examples of reflection, refraction and absorption (see attached notes). The teacher probe students towards an explanation of the color spectrum of visible light and that the color that you see is reflected while the other colors are absorbed. Objects appear white when all colors are reflected and objects appear black when all colors are absorbed. Students will complete anchor charts that explain reflection, refraction and absorption of light. Research reflection, refraction and absorption of sound waves. Create a presentation which demonstrates each type of wave behavior for sound along with an explanation for each one. 1. Explain why the pencil inside the beaker of water appears broken. 2. Explain why your image appears in a mirror. 3. Explain why an apple appears red. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 87 Summative Assessment: 1. When Shereen stood in front of one funny mirror at the amusement park, it made her look very tall and skinny. The next mirror made her look really short and wide. Which statement best explains why Shereen looked so different from one mirror to the next? A. B. C. D. The mirrors refracted light waves differently. The mirrors absorbed different amounts of light. The mirrors absorbed different types of light waves. The mirror surfaces reflected light waves differently. 2. A pelican hunts fish in the water. As the pelican flies above the water’s surface, why must it aim for the fish in a slightly different place than where the fish appears to be located? A. Light reflects off the fish, except for light of the wavelength the fish absorbs, making the fish hard to see. B. Water absorbs most of the light, so not much light reaches the pelican’s eyes. C. Energy from the ocean waves is transferred to the light waves. D. Light waves are refracted as they travel from air to water. 3. The diagram below demonstrates how a magnifying lens can make a penny appear larger. What property of the magnifying lens is most responsible for allowing it to magnify the penny? A. It can reflect right B. It can refract light C. It can increase the intensity of light D. It can increase the wavelength of light 4. When a straw is placed in a glass of fresh water, it appears to bend. Salt water is more dense than fresh water. Which of the following is true? A. B. C. D. The density of the substance that light passes through determines how much it is refracted. The refraction of the image of the straw is caused by the glass acting like a lens. Light is refracted by all substances at the same angle. The shape of the liquid determines how much the light is refracted. Division of Academics – Department of Science 88 Student handout Wave Behaviors Name ___________________________________ Date _____________ Period ______ Stations activity directions: Perform the procedure that is listed under to each station. Then answer the questions for each station in complete sentences. Station 1: I’m Rich Procedure: 1. Move your eye so that it is parallel (even) with the surface of the water in the glass. 2. Slowly change your angle of observation of the surface from parallel to the surface to looking straight above the coin in the glass (see diagram). 1. Briefly describe your observations of the surface of the water as you moved your eye from the side to straight above the glass: 2. How many coins do you see on the surface when you began looking parallel to the surface? 3. How many coins do you see when you are at a 45 degree angle to the surface of the water? 4. Why do you think that you see three coins? Is reflection, refraction or both involved in this trick? Station 2: You may need a magnifying glass Procedure: 1. 2. 3. 4. If you are reading this, you are probably using a magnifying glass. If you are reading this without a magnifying glass, I bet your eyes hurt. After you have read this, answer the questions below. Hold the magnifying glass up and try to view other people in your group from 3 feet away. Division of Academics – Department of Science 89 1. What does the first procedure say? 2. What are some common uses for magnifying glasses? 3. Why are you able to see the procedures more clearly using a magnifying glass? What is happening to light? 4. What happens when you try to view your group members through a magnifying glass from three feet away? Why do you think this happens? Station 3: Working with colors Procedures: 1. Lay out all the construction paper colors in front of you. 2. Order the colors in order from largest to shortest wavelength. (black and white not included) 3. Take the black paper and the white paper and put them both 2 inches away from the light on the overhead projector for 40 seconds. 4. Feel each sheet of paper directly after and observe which feels hotter. 1. What type of electromagnetic wave are you observing in this station? 2. List the colors in order from longest to shortest wavelength: 3. Which color absorbs all light? Which color reflects all light? 4. When you held the black and white papers up to the lamp, which one felt hotter after 40 seconds? __________________ Why do you think that happened? Division of Academics – Department of Science 90 Station 4: Mirrors Procedure: 1. Place a protractor at a 90 degree angle to the mirror. 2. Shine the flashlight at a 30 degree angle to the mirror (using the protractor as a guide). 3. The angle that the light that goes into the mirror is called the angle of incidence. 4. The angle that the light goes out of the mirror is called the angle of reflection. 1. When you shined the light at the mirror, what happened to its ray? Reflection, refraction or absorption? How do you know? 2. When you shined the light towards the mirror at an angle of incidence (light going in) of 30 degrees, what was the angle of reflection? Was it equal to the angle of incidence or different? 3. When you stand to the side of a mirror, why can’t you see your own reflection? (think about the angles) Division of Academics – Department of Science 91 Station 5: Prism Procedures: 1. Place your prism on a blank sheet of white paper. 2. Take your flashlight and shine it through prism. 3. Observe what you see on the white sheet of paper. the 1. What did you observe happen to the light when it went through the prism? 2. Why do you think that this happened to the light? Was it reflected, refracted or absorbed? ______________________ How do you know? 3. If you look through the prism, can you see in front of you or do you see to the side or you? ___________________________ Why do you think this happens? Division of Academics – Department of Science 92 Notes for Students Word: Reflections Definition: When light changes direction as it bounces off a smooth, shiny surface Synonym: bounce Why it’s similar: Both change direction Division of Academics – Department of Science 93 Word: Refraction Definition: The bending of a wave as it moves from one medium to another Synonym: fracture Why it’s similar: Both look broken Division of Academics – Department of Science 94 Word: Absorption Definition: Waves that are “soaked up” by a substance Synonym: sponge Why it’s similar: Both ”soak up” Division of Academics – Department of Science 95 The Power of Energy http://www.cpalms.org/Public/PreviewResource/Preview/28413 From CPalms Benchmark(s): SC.7.P.11.2: Investigate and describe the transformation of energy from one form to another Summary: Prior knowledge will be assessed using the students understanding of the word “energy”. Then students will have an exploratory experience regarding types of energy and energy transformations that they can observe around their classroom and school. Students will explain their understanding of energy transformations through and analysis of additional energy transformation images and have the opportunity to find new images to discuss in groups and present to the class. . KUD-Objectives: Students will Know: Students will know how to identify different forms of energy, including all potential and kinetic forms. Students will Understand: Energy is not created or destroyed, only transformed from one type to another. Kinetic energy is transformed into potential energy and vice-versa. They will also understand that most energy transformations usually produce some thermal energy as waste. Students will be able to Do: Students will be able to identify different types of energy transformations and real world applications. They will also be able to explain that energy is never gained or lost in a closed system, only transformed from one type to another. Essential Question: How does energy change forms? Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Activities Display the word "energy" on the board. Give each student an index card and ask students to draw or write the first thing that comes to mind when they hear the word "energy." Go around the room and have students share what they wrote. Ask students to move around the room and classify their drawings and words into categories according to what they wrote or drew on the cards. For example, if one student drew a plug and another drew a TV, they can group themselves together. Have students discuss why they think they belong together and ask each group to choose a category or title for their group. (The TV and plug can be categorized as "electricity"). Discuss groupings and different kinds of energy, use index cards to create a graphic organizer on a bulletin board or chart paper with the word "energy" in the middle. (sample below for example) Division of Academics – Department of Science 96 We Do Labs, Investigations, DI Opportunities Take students on an "energy" scavenger hunt around your school. Point out any object or machine that runs on energy and ask students the following questions. 1. What is it? 2. What is it used for? 3. What kind of energy does it use? For example you can stop by an air conditioning unit. Students would identify it; say that it is for cooling rooms, and that it uses electrical energy. Prompt students into telling you what other kinds of energy it produces. (examples: thermal, sound, mechanical). Explore Point out examples of potential and kinetic energy. For example, if you see someone mowing the lawn, students may see kinetic energy. Make sure to ask where the kinetic energy comes from (electrical from the machine, chemical or motion from the person pushing the lawn mower). Explain Student products such as CER, DI Menus You Do Evaluate Extend/ Elaborate Research, Home Learning Exit Slip Continue to walk and challenge students to identify other objects on our walk that use energy. Divide students into pairs. Hand out a picture card to each group (Attached below). Have groups identify the item and explain what energy transfers/transformations are happening. (Example- TV- electrical to heat, to light to sound). As groups share, ask students if they agree or disagree with each other's assessments. Ask students to suggest types of energy that they think also apply to the object. Have students find a picture of an object that uses energy. They can find pictures online, use magazines or newspapers, or take pictures. In small groups, students should share their pictures. Provide construction paper for students to glue pictures onto and have them work together to annotate the images with the transfers of energy happening in the pictures. Groups will present their pictures and transformations of energy. Exit Slip (attached) GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 97 Name_________________________________________ Date _____________ Period ________ Exit Slip 2. To bring heavy boxes down a flight of stairs, Tyrone 1. Tabitha ate a turkey sandwich and an apple uses a ramp. He slides the boxes down the ramp. The for lunch. Later that day, she ran 2 miles during soccer practice. Which of the following movement transforms one type of energy into two other forms. Which of the following describes the way that most energy transformations occurred between of the energy is transformed? lunchtime and the end of Tabitha’s run? a. Thermal energy was converted to kinetic energy. b. Mechanical energy was converted to chemical energy. c. Electrical energy was converted to thermal energy. d. Chemical energy was converted to mechanical energy. Why? ______________________________________ _______________________________________ _______________________________________ 3. All of the devices below either use or produce electrical energy. Which one converts mechanical energy to electrical energy? a. b. c. d. Battery Electrical drill Wind turbine Electric guitar Why? _____________________________________ _____________________________________ _____________________________________ 5. E. Potential energy into chemical energy and mechanical energy. F. Potential energy into light energy and mechanical energy. G. Potential energy into sound and chemical energy. H. Potential energy into heat and kinetic energy. Why? __________________________________________ __________________________________________ __________________________________________ 4. What type of energy is always given off and is not always useful during an energy transformation? _______________________________________ Give an example of this energy being given off during _______________________________________ _______________________________________ _______________________________________ _______________________________________ Many towns and cities in the US rely on windmills to generate electrical power. Explain how windmills use the Law of Conservation of energy when generating electricity. (Hint: Where does the energy come from?) Division of Academics – Department of Science 98 Example of graphic organizer lights microwave sun electricity plug TV ENERGY food Snickers Different types Helps you do things running Division of Academics – Department of Science 99 Division of Academics – Department of Science 100 Division of Academics – Department of Science 101 Socks and Temperature (A Heat Transfer Activity) http://www.cpalms.org/Public/PreviewResource/Preview/46119 From CPalms Benchmark(s): SC.7.P.11.4: Observe and describe that heat flows in predictable ways, moving from warmer objects to cooler ones until they reach the same temperature. SC.7.N.1.4: Identify test variables (independent variables) and outcome variables (dependent variables) in an experiment. LAFS.68.RST.1.3: Follow precisely a multistep procedure when carrying out experiments, taking measurements, or performing technical tasks. Summary: To teach this lesson, begin with an engagement which consists of showing students a video of a chocolate Easter bunny melting and asking them to explain why this is happening to the bunny. Students will share their answers but misconceptions will not be corrected at this time. In the explore section of the lesson students will work in groups to complete an experiment that investigates if the temperature inside of a sock is warmer than outside the sock. During the explain portion students will create a graph of their data and record their results on the class data table at the front of the room. Students will participate in a class discussion about the results of the experiment and explain why there was very little change in temperature between the inside and outside of the sock. Students will suggest how the experiment could be changed so there is a change in temperature which results from the flow of heat from a warmer area to a colder area. The students will be asked to explain why their feet sometimes feel cold if they don’t wear socks. A CER (Claim, Evidence and Reasoning) will be completed by each student based on the original questions for this activity. In the elaboration/extension portion students apply their knowledge of heat flow to real world examples. The exit slip asks students to apply heat flow to specific examples. KUD-Objectives: Students will Know: Heat is a form of energy. Heat moves from warmer objects to cooler ones until they reach the same temperature. Students will Understand: When an object or substance loses heat, its temperature will decrease and when it gains heat, its temperature will increase. The loss or gain of heat may result in a temperature change and possibly a change in state (i.e. liquid to gas). Students will be able to Do: Explain how heat (energy) flows from one object to another resulting in a change in temperature and possibly a change in state of matter. Essential Question: Using real world examples, explain that adding heat to or removing heat from a system may result in a temperature change and possibly a change in state. Division of Academics – Department of Science 102 Engage Lesson Cycle: GRRM* Gradual Release of Responsibility Model GRRM* 5E Suggested Activities Activities I Do Formative Show this 1 minute video of a chocolate Easter bunny Assessment melting. Probe, Video Melting bunny video clip, Teacher Demonstration After viewing the video clip with the class, have students move into small groups (2 students preferred) and discuss within their group why the bunny is melting and concentrate on the flow of energy. Ask students to share their answers but don’t correct misconceptions at this time. Please come back to this after students complete the activity. We Do Guiding Questions: (teacher should walk around during the Labs, Investigations, activity and ask students these questions) DI 1. What are socks used for? (guide students to say "to Opportunities warm your feet") 2. What is heat? 3. Is the temperature inside a sock warmer than outside a sock? 4. How does heat move in the environment? Activity: Socks and Temperature: A Heat Transfer Activity Explain Explore The activity sheet is attached to the end of document. 1. The teacher should begin by asking the class "Why do we wear socks?" - Guide students to say "to warm your feet". 2. Ask students "What will happen to the air INSIDE the sock compared to air outside the sock?". Give students 2 minutes to discuss in their group. 3. Have the students write a hypothesis (prediction) on the Sock and Temperature Worksheet that addresses the question "Is the temperature inside of a sock warmer than outside the sock?" 4. The students will measure and record air temperatures inside and out of a sock by following the activity directions listed on the Sock and Temperature Worksheet. (Remind students to measure the temperature using Celsius in science class) Student products such as CER, DI Menus Division of Academics – Department of Science 1. Using their recorded temperature data, have the students create a graph. 2. Have students record their data on class data table in front of the room. 3. Next students answer the question "Describe how the energy flowed in your experiment on your Sock and Temperature Worksheet." 4. Instruct students to complete the conclusion statement on the worksheet. 103 5. Class discussion: Ask students to share their results of this activity and explain why there was no net flow of heat in or out of the sock. Ask students to explain how they could change the procedures in this activity so there would be movement of heat from a warmer area to a cooler area. Ask students to explain why their feet sometimes feel cold if they don’t wear socks? Suggestion: Give students a beaker of cold water and instruct them to measure the temperature of the water every minute for ten minutes so they can see a temperature change which results from heat flowing from the air surrounding the beaker of water to the cold water. 6. Revisit the video of the melting bunny from the engagement. Why did the bunny melt? 7. Students will complete a CER (Claim, Evidence and Reasoning) for this activity using the original question on the worksheet. You Do Research, Home Learning Answers will vary but should state that there was no net flow of heat in or out of the sock. The temperatures stayed the same or had very little variation. This is because net heat flow always travels from an area of higher to lower heat concentration. Since the temperatures inside and outside the sock were the same, heat energy is flowing in and out of the sock at the same rate Working in their group, students will brainstorm real world scenarios that fit the conditions listed below. Have students make sure to describe the flow of heat energy in their scenarios. Students may write answers on a separate sheet of paper or dry erase board so they can be shared with the rest of the class. Extend/ Elaborate 1. A metal heats up 2. Food cools down 3. A liquid freezes and then melts Example scenarios: Division of Academics – Department of Science #1 - the iron grate on a BBQ grill increases in temperature as heat flows away from the burning coals and into the iron grate. #2 - after dinner, Alice placed her leftover soup into the refrigerator. Heat stored in the soup will flow out into the cooler air of the refrigerator. #3 - Roger's freezer has an automatic ice cube maker. Relatively warmer water gives off heat energy to the colder surrounding air in the freezer until it freezes. He then takes ice cubes out of the cold freezer and into a glass of tea on a hot day. After 15 minutes, the ice cubes have melted because heat energy from the air surrounding the glass of tea flows into the glass. This raises the 104 temperature inside the glass, melting the ice. Evaluate Exit Slip Division of Academics – Department of Science Explain why cans of warm soda will become cold when placed in a cooler of ice. 1. Explain why food does not freeze in a refrigerator. 2. Draw a picture showing the flow of heat to and from a hot potato and room temperature potato sitting on a kitchen counter. 105 Summative Assessment: 1. Anna pours herself some room-temperature soda from a bottle and adds four ice cubes. In a few minutes the ice cubes are smaller and the soda is much colder. Which of the following best explains the change in temperature of the soda? A. Heat flowed from the soda to the ice cube and caused it to partially melt. B. Coldness flowed from the ice cube to the soda, making the soda colder. C. The cold water from the melting ice went into the soda, replacing the warmer water that was in the soda. D. The water from the melting ice makes the soda more dilute, and the lower concentration makes the temperature lower. 2. Jeffery brings a book from air-conditioned apartment to a balcony on a hot summer day. How will the cool book interact with the outside air? A. Heat from the book will move to the air. B. Heat from the air will move to the book. C. Coolness from the book will move to the air. D. Coolness from the air will move to the book. 3. An empty paper cup is the same temperature as the air in the room. A student fills the cup with cold water. Which of the following describes how thermal energy is transferred? A. Thermal energy is transferred from the cold water to the cup until they are at the same temperature. B. Thermal energy is transferred from the cup to the cold water until they are at the same temperature. C. Thermal energy is transferred from the cup to the cold water until the cup has no more thermal energy. D. Thermal energy is not transferred between the cup and the cold water. Division of Academics – Department of Science 106 Student handout Sock and Temperature Activity Question: Is the temperature inside of a sock warmer than outside the sock? Hypothesis: ____________________________________________________ Directions: Materials- 1 sock, 2 thermometers per group. 1 sheet of graph paper per student 1) Design and draw a data table on the graph paper a. Come up with a title for the data table b. Label each column at the top 2) Carefully place a thermometer INSIDE the sock resting on the table and another NEXT TO the sock also resting on the table. Let stand for 2 minutes. 3) Record temperatures every 30 seconds for 10 minutes a. One person is timer and reads the thermometer b. One person NEATLY records data in data table designed in step 1 Identify your variables. a. b. c. d. e. Best type of graph to use ___________________________ Independent Variable _________________________________ Dependent Variable __________________________________ Control _________________________________________ Constant Variables ___________________________________ Draw your graph and don’t forget to give your graph a title and label both the X & Y-axis. In the space below, describe the energy flow in your experiment. Conclusion: Division of Academics – Department of Science 107 Title: Evolution and Natural Selection Benchmark(s): SC.7.L.15.2: Explore the scientific theory of evolution by recognizing and explaining ways in which genetic variation and environmental factors contribute to evolution by natural selection and diversity of organisms. Summary: This lesson is intended to review the Theories of Evolution and Natural Selection. Students will be introduced to the concept with a brainpop video where the teacher can stop and probe students to assess their prior knowledge. The powerpoint presentation is intended to introduce the Theory of Evolution and then segue into how the Theory of Natural Selection explains the process. Students will then participate in a demo modeling natural selection through many generations. They will demonstrate their mastery by completing a worksheet on Natural Selection and subsequently completing an exit slip with FCAT aligned questions. KUD-Objectives: Students will Know: That the Theory of Evolution states that there is a gradual change of species over many generations and that natural selection is a theory that helps to explain evolution. Students will Understand: That species change over generations due to random mutations in their DNA. The more favorable traits for an organisms environment enable them to survive long enough to reproduce and pass on that trait. The less favorable traits cause organisms to die before reproducing and passing on those traits. Survival of the fittest! Students will be able to Do: Complete the worksheet and explain why different organisms are able to survive in their environments due to their unique traits. They will also explain that favorable traits are passed on while unfavorable traits are not, leading to the gradual change of species over generations. They will show mastery by scoring at least an 80 percent on their exit slip. Essential Question: How do species change over time? Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Activities Formative Bellringer (attached) Assessment Probe, Video Introduction: Brainpop – Natural Selection clip, Teacher Demonstration “I do”: PowerPoint with guided notes (attached). Students will be required to answer questions 1-5 on the left side of their guided notes. (think-pair-share format) http://classjump.com/p/petergaebler/documents/Evolution_.pptx Division of Academics – Department of Science 108 We Do Explore Labs, Investigations, DI Opportunities “We do”: Teacher will pass out natural selection game cards (wing sizes) to students in a random order. Teacher will give students following directions: • All of you will be members of a single species. • Receive a card w/ the trait of your bird. • Once your receive card, Please memorize the trait. • Everybody will stand up when I say so. • Groups of you will die, if you die, please sit down. Students will answer questions on left side of guided notes and then go over them together with the class. Extend/ Elaborat e Research, Home Learning “You do”: Students will complete the natural selection independent practice worksheet. Exit Slip Exit Slip attached. Explain Student products such as CER, DI Menus Evaluate Teacher will facilitate the natural selection game with students by going through the slides. You Do GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 109 Evolution Exit Slip Name: ___________________________ Date________________ Period_______ 1. Chameleons can change color to match the color of their surroundings. If a chameleon was born with a mutation that prevented it from being able to change color, why would it be unlikely to pass on this trait? a. The gene would mutate again before it was passed on. b. The trait would be recessive, so it would not be passed on. c. The chameleon would be unlikely to survive long enough to reproduce and pass on the trait. d. The chameleon would have to find another chameleon with the same trait to pass the trait on. 2. A scientist is studying the fossils of giraffes from different regions and different time periods. What would the scientist be most likely to learn about? a. How the color of giraffes changed over time b. How the spots on giraffes changed over time c. How the height of giraffes changed over time d. How the behavior of giraffes changed over time 3. Scientists have found evidence in the fossil record that the structure of certain animals has changed over time. What is the best explanation of why animal populations adapted over time? a. Species change because of use or disuse of traits. b. Species became extinct and were replaced by better-adapted species. c. Fossils remains provide clues as to why certain species have changed over time. d. Certain mutations in species have become more prevalent over time through natural sections. 4. Doctors once prescribed antibiotics automatically “just in case” an infection might happen. Now doctors are careful to avoid overuse of antibiotics. The change is based on what doctors understood about bacteria an natural selection. Which of the following statements best explains why doctors limit their use of antibiotics? a. Doctors now know some bacteria have mutations that are resistant to antibiotics. b. Doctors now know that bacteria have been the same throughout history and have never changed since antibiotics were first utilized. c. Doctors now know that antibiotics do not work to fight bacterial infections; therefore, they do not rely on them like they once did. d. Doctors now know that antibiotics cause bacteria to multiply more quickly than they would if they were not treated with antibiotics. 5. Before the invention of the light bulb, Americans burned oil in lamps for light. Whale oil was popular biofuel for these lamps. Ship crews would hunt whales for their oil. They searched for the largest whales they could find so that they could obtain as much whale oil as possible. How mighty decades of whale hunting possibly affect the natural selection of the species? a. The whales lost their legs. b. The whales became slower. c. The whales became smaller. d. The whales changed their calls. 6. How does natural selection lead to evolution? a. Stronger offspring kill weaker members of the species b. Individuals that are better adapted to their environment survive and reproduce c. Overproduction provides food for stronger members of the species d. Environmental changes kill weaker members of the species 7. Describe the theory of Natural Selection. ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Division of Academics – Department of Science 110 Bellringer Name: _________________ Date: ____________ Period:_______ 1. Have humans always existed as a species, or did humans start as a different animal that changed over time? ________________________________________________________________________________________ ________________________________________________________________________________________ 2. What does the word "evolution" mean? ________________________________________________________________________________________ ________________________________________________________________________________________ Bellringer Name: _________________ Date: ____________ Period:_______ 1. Have humans always existed as a species, or did humans start as a different animal that changed over time? ________________________________________________________________________________________ ________________________________________________________________________________________ ____________________ 2. What does the word "evolution" mean? ________________________________________________________________________________________ ________________________________________________________________________________________ Bellringer Name: _________________ Date: ____________ Period:_______ 1. Have humans always existed as a species, or did humans start as a different animal that changed over time? ________________________________________________________________________________________ ________________________________________________________________________________________ 2. What does the word "evolution" mean? ________________________________________________________________________________________ ________________________________________________________________________________________ Bellringer Name: _________________ Date: ____________ Period:_______ 1. Have humans always existed as a species, or did humans start as a different animal that changed over time? ________________________________________________________________________________________ ________________________________________________________________________________________ 2. What does the word "evolution" mean? ________________________________________________________________________________________ ________________________________________________________________________________________ Division of Academics – Department of Science 111 Division of Academics – Department of Science 112 Guided Practice Wing Cards Division of Academics – Department of Science 113 Division of Academics – Department of Science 114 Think – Pair – Share: List one similarity and 1 difference that you can see between the two organisms: 1. Similarity:__________________________________________ __________________________________________________ 2. Difference: __________________________________________________ Stop and Jot: Which rabbit has a better chance at surviving in the North Pole? Why? __________________________________________________ __________________________________________________ __________________________________________________ __________________________________________________ __________________________________________________ What do you think would happen to the rabbit population if all of the snow melted in the North Pole? Why?____________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ Why is it important to have genetic variation in a species gene pool? _______________________________________________________ _______________________________________________________ _______________________________________________________ _______________________________________________________ Natural Selection Game Did you survive? ________ Why?___________________________________________________ _______________________________________________________ _______________________________________________________ Which genes will be passed down to the next generation? _______________________________________________________ _______________________________________________________ How will the next generation look? _______________________________________________________ _______________________________________________________ Essential Question: _______________________________________________________ Evolution and Natural Selection Guided Notes The _____________________________________________________ explains how living things descended from earlier organisms. It also states that species can change ______________________ over time. Evolution results in certain species thriving while other species go _______________________________. Wooly mammoth: Extinct Elephant: still exists ____________________________ – A characteristic that helps an organism to survive. _________________________________ – Different traits that exist within the gene pool of a species. Genetic variation can happen randomly through _______________________ to DNA. _________________________________: the process by which individuals that are ______________________________________ to the environment are ________________________________________________ than other members of the same species. Natural Selection states that individuals that are the best adapted traits are able to _____________________ long enough to reproduce and ___________________________________________ on. Traits that are not good _____________________________ are not passed on because individuals with those traits _____________________________________________to reproduce. Division of Academics – Department of Science 115 Toothpick Chromosomes http://www.cpalms.org/Public/PreviewResourceLesson/Preview/19321 From CPalms Benchmark(s): SC.7.L.16.1 Understand and explain that every organism requires a set of instructions that specifies its traits, that this hereditary information (DNA) contains genes located in the chromosomes of each cell, and that heredity is the passage of these instructions from one generation to another. Summary: To teach this lesson, begin with an engagement which consists of asking students to answer a group of questions in their journals about characteristics and how they are passed from parents to offspring. The teacher should begin a short discussion by asking several students to share their answers without correcting misconceptions at this time. In the explore section of the lesson students will investigate the connections between chromosomes, genes, and traits that are inherited in a guided inquiry lesson entitled Toothpick Chromosomes. The students will model how traits are passed from parents to offspring by using toothpicks which represent chromosomes and dots represent genes. As students are completing the activity, the teacher will move around the room asking students the guiding questions which are provided for this activity. During the explain portion, students will participate in a class discussion to clarify their ideas. After the discussion, students will review their answers to the questions from the engagement portion of the lesson and make any necessary changes based on what they have learned about the relationship between DNA, chromosomes, genes and traits. Students will then create a diagram which illustrates the relationship between DNA, chromosomes and genes. The elaboration/extension portion consists of students creating a model to show how they inherited a trait from their parents such as tongue rolling, attached ear lobes, or another of the traits that were discussed at the beginning of the lesson. For the exit slip students will complete three questions about the relationship between DNA, chromosomes, genes and traits. KUD-Objectives: Students will Know: Every organism has DNA which is the genetic material that has a set of instructions that determines its characteristics. Students will Understand: Chromosomes are made of DNA and sections of the chromosome are called genes which determine traits in organisms. Heredity is the passing of the traits from one generation to another. Students will be able to Do: Identify and/or explain that hereditary information (DNA) contains genes located in the chromosomes of each cell and/or that heredity is the passage of these instructions from one generation to another. Essential Question: Create a model which illustrates and explains that hereditary information (DNA) contains genes located in the chromosomes of each cell and/or that heredity is the passage of these instructions from one generation to another. Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Activities Formative Engage the student using the following questions: Assessment Probe, Video How many of you know someone who looks very much like clip, Teacher one of their parents? Demonstration How many of you have been told, "You look just like your father/mother?" Division of Academics – Department of Science 116 How many of you can roll your tongue? How many of you have attached earlobes? Unattached earlobes? Hold up your thumbs-let's see who has a straight thumb and who has a curved thumb? When you clasp your hands together interlacing your fingers, do you put your left thumb over your right thumb or your right thumb over your left one? How do you think characteristics are passed on from parents to the children? If you look more like one parent than the other, do you think you inherited more from them than the other parent? Have the students write down their ideas of how characteristics are passed from parents to children in their notebooks. For each question, ask several students to share ideas. Uncovering Student Ideas in Science Volume 2, page 129 (accessible in the learning village) has a great probe called "Baby Mice" that could be used to introduce this lesson as well. We Do Labs, Investigations, DI Opportunities Guiding Questions: (questions that teacher will ask students while they are completing the activity) How are traits passed from parents to the children? If a child looks more like one parent than the other, does that mean that he/she inherited more genes from that parent than the other? What is a chromosome? What is a gene? How are genes and chromosomes related? Explore Activity: Toothpick Chromosomes Students will be investigating the connections between chromosomes, genes, and traits that are inherited in a guided inquiry lesson. Tell the students: You will be modeling how characteristics are passed from parents to offspring in this activity. You will work independently; following the directions you will be given. Pass out a bag of toothpicks for each pair of students, the Genetics Cross Diagram and the student directions worksheet. Have the students follow the directions on the worksheet. The students will be modeling how traits are passed from parents to offspring by using toothpicks which represent chromosomes and the dots on the toothpicks represent genes. Walk around and observe students as they are working and assist ones who are having difficulty. Division of Academics – Department of Science 117 Student products such as CER, DI Menus After students complete the worksheet have a class discussion to clarify their ideas. Go over these points with the students: Explain You Do What did the toothpicks represent? What did the dots on the toothpicks represent? When you crossed the purple and the white flowers and got all purple offspring was it because the offspring only inherited the purple genes? What was the reason? Where are chromosomes found in a cell? What are chromosomes made of? Tell students: In your notebooks, look back at what you wrote at the beginning of the lesson about how traits are passed from parents to children. Now write down what you have learned about the relationships between DNA, chromosomes, genes, and traits: Chromosomes are made of DNA. Sections of the chromosome are called genes. The genes determine traits in organisms. Heredity is the passing of the traits from one generation to another. Extend/ Elaborate Research, Home Learning Have students copy a diagram in their notebook similar to the one below to show the relationship between DNA, chromosomes, and genes: http://www.phoenix5.org/glossary/graphics/CellChromoDNAGene.gif. To determine if students have a solid understanding of the concepts, have them create a model to show how they inherited a trait from their parents such as tongue rolling, attached earlobes, or another of the traits that were discussed at the beginning of the lesson. Or have them continue to work with the purple and white genes in pea plants and answer these questions: Evaluate Exit Slip 1. What would be the possible offspring if you crossed a flower with a purple gene and a white one with a flower that had only white genes? Only purple genes? 2. Could two white flowers produce plants with purple flowers? Why or why not? How are traits passed from parents to the children? If a child looks more like one parent than the other, does that mean that he/she inherited more genes from that parent than the other? How are genes and chromosomes related? GRRM* Gradual Release of Responsibility Model Summative Assessment Key: 1. D 2. A 3. D 4. B Division of Academics – Department of Science 118 Summative Assessment: 1. Genes determine whether you have dimples, what color eyes you have, and even the ability to roll your tongue. Which is the role of a gene in inheritance? A. The gene contains chromosomes that show an organism’s traits. B. The gene gets messages from its cell about showing certain traits. C. The gene has nerves that send messages to the brain controlling specific traits. D. The gene is a section of DNA that controls a trait that the organism inherits. 2. All living things have genes to produce specific characteristics. Which of the following best describes the word gene? A. A gene is a factor that controls a trait. B. Genes are replicated chromosome. C. Genes are the same as recessive allele. D. A gene is a rung of the DNA ladder. 3. Which of these determines whether a fertilized egg develops into a toad, a snake, or a lizard? A. the sex of the egg B. the age of the egg C. the size of the egg D. the genes of the egg 4. In guinea pigs, brown hair is dominant to white hair. The diagram shows chromosomes from a male guinea pig with brown hair and a female guinea pig with white hair. A white-haired offspring resulting from the cross of these two guinea pigs MOST likely inherited genes from which two chromosomes? A. 1 and 2 B. 1 and 3 C. 2 and 4 D. 3 and 4 Division of Academics – Department of Science 119 Genetic Cross Diagram Female Parent Male Parent Gamete Formation Male Gametes Female Gametes Fertilization Possible Offspring Division of Academics – Department of Science 120 Toothpick Chromosomes Student Directions 1. The toothpicks represent chromosomes and the dots on the toothpicks represent genes. Pick out two toothpicks with a purple dot and two with a white dot. The purple dots represent the gene for purple flower color in pea plants and the white dots represent the gene for white flower color. 2. Now place the two purple toothpicks in the male parent box on the Genetics cross diagram and place the two white toothpicks in the female box on the diagram. We place two toothpicks because there are two copies or forms of the gene in each parent. When flowers reproduce, the male and female gametes (sperm and eggs) get one chromosome or one copy of the gene for each trait. Show this by placing one toothpick in each of the boxes labeled Male Gametes and Female Gametes. 3. During fertilization and egg and a sperm combine to form one cell. Use the boxes labeled Possible Offspring to show the possible combinations of dots (genes). What color flowers do you think will be produced? Make a prediction and record it here: ___________________ 4. Go get a slip of paper from the envelope labeled First Generation to see if you are right. Follow the directions on the slip of paper. 5. Second Generation Prediction: 6. After you have used your Genetics Cross Diagram to determine what color the second generation of flowers will have, write down your findings here: ___________________________________________ 7. Go get the answers from the envelope labeled Second Generation to see if you are correct. If not, see your teacher or another student group for help. Division of Academics – Department of Science 121 First Generation Answers A scientist named Gregor Mendel actually did this experiment and found that all the flowers that were produced were purple. The flowers that were produced have a gene for purple and a gene for white but only the purple gene shows up. Mendel called this a dominant gene because it dominates, or covers up, the gene for white flowers which we call a recessive gene. Now, suppose that two of these pea plants (which have one gene for purple flowers and one gene for white flowers) reproduce. What color flowers do you think their offspring would have? Make a prediction and record it on your worksheet under Second Generation Prediction. Use the Genetics Cross Diagram and your toothpicks to figure out the results of this cross. This time start with a purple and a white toothpick for the male and a purple and a white toothpick for the female. Follow the same procedure as you did before to model the possible offspring. Second Generation Answers You should have found that it is possible to have purple and white offspring in this cross. You may have noticed that you would have more purple than white offspring. Division of Academics – Department of Science 122 Symbiosis Benchmark(s): SC.7.L.17.2: Compare and contrast the relationships among organisms, such as mutualism, predation, parasitism, competition, and commensalism. Summary: During this lesson, students will be expected to distinguish between symbiotic relationships. To get students started, they will be asked to reflect on their own relationships with their friends and then watch a brainpop video that relates symbiotic relationships with their own relationships. The “I do” will be a quick PowerPoint briefly introducing types of relationships to the students using definitions, visual representations and real world examples. The “we do” will be done using video clips that show particular symbiotic relationships. After each video, students will need to identify the type of relationship depicted and then explain how they know. The ”you do” will be done with an independent practice worksheet that infuses literacy and students mastery will be assessed with an exit slip. KUD-Objectives: Students will Know: Students will know how to identify different types of relationships between organisms including mutualism, commensalism, parasitism and predation. Students will Understand: Students will know how to distinguish between different symbiotic relationships and convey that these relationships occur naturally between organisms of different species. Students will be able to Do: Students will be able to read excerpts describing symbiotic relationships or predation and identify which type of relationship the excerpt is describing. Students will also be able to explain why they chose their answer. Essential Question: How do organisms interact with each other? Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Explore We Do Activities Bellringer: A question asking students to reflect on types of relationships that they have with their friends. Introduction: Brainpop: Symbiosis I do: PowerPoint with guided notes introducing mutualism, commensalism, parasitism and predation. Students will take guided notes (attached) by filling in the blanks on their sheet with words highlighted in the powerpoint. http://classjump.com/p/petergaebler/documents/Symbiosis.pptx Labs, Investigations, DI Opportunities Several videos are embedded into the powerpoint. If the videos will not play through the powerpoint, each can be downloaded or accessed individually using the links below: Symbiosis Botfly Video Symbiosis Shark and Cleaner Fish Video Clownfish and Sea Anemone Tongue Biter and Snapperh Symbiosis Tiger and Deer Video Videos depicting each relationship will be shown. Video1: Botfly and Human Video 2: Shark and cleaner fish Video 3: Clownfish and sea anemone Video 4: Tongue biter and Snapper Video 5: Tiger and Deer Division of Academics – Department of Science 123 Explain Extend/ Elaborate After each video, students will be asked to identify the relationship being depicted in the video and then explain why they thought that was the correct answer. They can do this in pairs after each video. (handout on left side of guided notes.) Research, Home Learning Additional practice scenarios are available below. Apply the essential question (How do organisms interact with each other?) to a local habitat such as the Everglades or coral reefs and describe examples of each symbiotic relationship Exit Slip Exit Slip (attached) Evaluate You Do Student products such as CER, DI Menus GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 124 Name _______________________________ Date _______________________ Period ________ Bellringer Think of a relationship that you have with a person. It can be a good one, bad one or one that really doesn’t affect you either way. Explain the relationship with that person and what your role is. Name _______________________________ Date _______________________ Period ________ Bellringer Think of a relationship that you have with a person. It can be a good one, bad one or one that really doesn’t affect you either way. Explain the relationship with that person and what your role is. Name _______________________________ Date _______________________ Period ________ Bellringer Think of a relationship that you have with a person. It can be a good one, bad one or one that really doesn’t affect you either way. Explain the relationship with that person and what your role is. Division of Academics – Department of Science 125 Name ______________________________ Date __________________ Period _____ Exit Slip 1. Symbiotic relationships include mutualism, commensalism, and parasitism. Which of the following is a commensal relationship? a. a bird pollinating a flower c. a hawk eating a mouse b. a mosquito biting a dog d. a bird building a nest in a tree Why did you choose this answer? 2. Which of the following best describes a parasitic interaction? (SC.7.L.17.2) a. Microorganisms making nitrogen available to plants Microorganisms in the digestive tract causing inflammation and ulcers. b. Microorganisms in the digestive tract of cows helping break down plant material. c. Microorganisms in the digestive tract of humans helping convert substances to useable vitamins. Why did you choose this answer? 3. Lichens are actually made of two organisms: algae and fungi. The alga provides food for the fungus, while the fungus provides protection for the algae. This type of relationship, where both organisms benefit, is known as: a. predation c. mutualism b. parasitism d. commensalism Why did you choose this answer? 4. When a bird builds its nest in a tree, the bird benefits because the trees branches provide a place for protection from predators. In return, the tree is neither helped nor hurt by the birds nest. This type of symbiotic relationship is known as: a. Predation c. commensalism b. mutualism d. Parasitism Why did you choose this answer? Division of Academics – Department of Science 126 Name _____________________________________ Date ___________________ Period _____ 1. The mistletoe plant digs roots into a tree branch and takes food from the tree. But mistletoe also makes some food for itself because its leaves are green and it has chlorophyll. This is an example of :____________________________because __________________________________________________________________________ 2. As a “hermit” I find predators pesky to deal with on my long wanderings. So I load an anemone on my back and scuttle over to the neighboring reef-hey, it's always safer for me to travel with a living shield! And I suppose the anemone likes the idea of a change of environment and more food to choose from. This is an example of :_____________________________because _____________________________________________________________________________ 3. The anglerfish's natural predatory skills makes it a choice host for me-there are plenty of nutrients for a little bacterium like me inside its body. Of course, the anglerfish couldn't get nearly enough food on its own, so I give off a nice gentle glow that it can use for the purpose of luring more prey. This is an example of :_____________________________because _____________________________________________________________________________ 4. I am a bacterium that lives on the roots of the soybean plant. I take nitrogen from the soil and make it available for the plant to grow. In return, the soybean plant provides me with carbohydrates for food. This is an example of :_____________________________because _____________________________________________________________________________ 5. I am a barnacle living on the skin of a whale. I adhere to the outer layer of the whales thick skin, so I go wherever he goes. Living on the whale gives me a free ride to many more food sources that I would not have been able to get to without some help. The whale is not harmed by me since I do not interfere with his life, not irritate his skin, but I don't do anything to help him out. he doesn't seem to mind me hitching a ride, so it's cool. This is an example of :_____________________________because _____________________________________________________________________________ 6. I am an algae, being held in place by a fungus. Together, we are called a lichen. Man, do we have it good. I feed him nutrients that I create through the process of photosynthesis. (That's right, I'm a producer). In return, he holds me in place so I can gather sunlight without being pushed around by the wind. We are like two best friends, helping each other out in need. This is an example of :_____________________________because _____________________________________________________________________________ 7. I am a flea that lives on the back of a dog. I feed off of and find my home in the skin of many different animals. The dog does his best to try and get rid of me by scratching and biting, but I just keep digging further and further. This is an example of :_____________________________because _____________________________________________________________________________ Division of Academics – Department of Science 127 Directions: For each situation below classify the relationship as mutualism, commensalism, or parasitism. Describe which organisms are helped and how they are helped. Describe which organisms are harmed, and how they are harmed. A large beetle spreads its wings to fly revealing a teeny tiny hitchhiker going for a free ride. The mini scorpion often travels by hiding under the wing covers of large beetles. Not only does it get a lift to a new destination (place), but it gains protection from predators. The pincers (claws) of the scorpion are too small to affect its beetle host,. This is an example of _____________________________________________because ___________________________________________________________________________________ ___________________________________________________________________________________ Scuttling silently across the ocean floor, the tiny candy cane striped legs of the boxer crab extend sideways. Unknown to the crab and lurking around, is a hungry predator, ready to make a quick snack of the crab. The crab is not defenseless though. Growing around the crab’s front claws are tiny creatures called sea anemones. These sea anemones protect the crab as they contain stinging cells which deter any possible attacker. Meanwhile, the anemones get a free ride to all different sorts of food sources. This is an example of ________________________________________________because ___________________________________________________________________________________ ___________________________________________________________________________________ Leaping from the edge of a rock face to almost certain death, a grasshopper plunges into a pool of water where it drowns. Suicide? Nope. Inside the body of the grasshopper squirms a tiny hairworm. Upon arrival in its grasshopper host, the worm releases chemicals that wreak havoc on the grasshopper’s central nervous system, causing the grasshopper to eventually kill itself. When the grasshopper hits the water, the hairworm, now three or four times longer than the grasshopper, can swim away and join its fellow hairworms. This is an example of ____________________________________________________________________________because ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ___________________________________________________________________________________ ____________________________________________________________ Division of Academics – Department of Science 128 Division of Academics – Department of Science 129 8th Grade Benchmark Resources Division of Academics – Department of Science 130 Hierarchical Relationships in Space Adapted from Earth Science – A CPalms resource Benchmark(s): SC.8.E.5.3 - Distinguish the hierarchical relationships between planets and other astronomical bodies relative to the solar system, galaxy, and universe, including distance, size, and composition. Summary: To teach this lesson, begin by engaging students with the “Scale of the Universe” interactive video simulation. Students will then work in groups and use a laptop computer with internet access, to view the Structure of the Universe PowerPoint presentation and to take notes into their lab notebooks. Next, using their notes, have students create an 8.5” x 14” individual poster organizing the items listed on the activity direction sheet in logical order. KUD-Objectives: Students will Know: the universe contains billions of galaxies and stars between objects in space in the context of light and space travel Students will Understand: a hierarchical relationship exists between objects in space. Students will be able to Do: organize objects in space by their relative distance, relative size, and general composition. Create an illustrated poster demonstrating an understanding of the hierarchical relationships between planets and other astronomical bodies. Essential Questions: What makes up the universe? What is the structure of the universe? How are distances in space measured? Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Activities Formative Allow students time to interact with Scale of the Universe Assessment video simulation to help bring size, and distance of the Probe, Video objects in the universe into perspective. clip, Teacher Demonstration Division of Academics – Department of Science 131 We Do Labs, Investigations, DI Opportunities After you have showed the discussed the “Scale of the Universe” animation, explain to students they will take an imaginary trip to the universe with 5 stops. Since this is an imaginary trip, we can also assume travel at the speed of light. Background Information: The distance measurement unit we use depends on what we are measuring. For instance, within our Solar System, or other solar systems, the common unit is the Astronomical Unit (AU). One AU equals the average distance between the Earth and the Sun (149,597,887.7 km or 150,000,000 km). For almost everything else, stars, galaxies, etc…, an appropriate measurement unit is the light-year. Explain Explore We can calculate distance of one light-year by knowing the speed that light travels – 299,792,458 km/sec (186,287.5 miles per second). At this speed, light can travel 9.46 x 1015 meters (5,878,786,100,000 miles in one year). This is called a light-year. You Do Student products such as CER, DI Menus Extend/ Elaborate Research, Home Learning Evaluate Exit Slip Students will create individual posters using legal sized (8.5”x14”) paper in order to demonstrate an understanding of the hierarchical relationships between planets and other astronomical bodies relative to the solar system, galaxy, and universe. (See “Activity” below) Create a picture book explaining to younger students what a light year is. Begin by explaining what distance is and how long it takes to travel a short distance. Then discuss traveling longer distance such as the distance to the sun and the nearest star. Use illustrations, diagrams, and everyday examples to assist younger students to understand the concepts. Students will display their completed posters in the classroom for everyone to view while conducting a gallery walk at the end of the class. After viewing the posters, have students prepare a Venn Diagram comparing and contrasting the relative distance, relative size, and general composition of astronomical bodies in the universe. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 132 Summative Assessment: Use the following terms to complete questions 1 and 2. Asteroid belt Our Solar System Sun Whirlpool Galaxy Planet Moon 1. Order these objects based on size from smallest to largest. 2. If you were able to travel through the enormous distances in space, in what order would you expect to visit or pass these objects? Division of Academics – Department of Science 133 Stations Image Credit: Simulation Curriculum’s Starry Night software https://www.simulationcurriculum.com/ Stop 1 (Station 1): You have traveled 8 minutes since you left Earth – at this time your distance traveled equals to the distance between the Earth and the Sun. This is how long it takes light to reach Earth from the sun at a speed of light, 300,000 km/s. The distance from Earth to the Sun is 150 million kilometers which equals one astronomical unit (AU). Study the diagrams and answer the following questions in your science notebook. 1. How many planets are 1 AU or less from the Sun? 2. Would all of the planets be on the same side of the Sun as the Earth? Why? Stop 2 (Station2): You have traveled 0.16 years (58 days) since leaving Earth – Look back at the Sun. It is at a distance of 10,000 AU and the only thing you see is a very bright star in a sea of blackness. The distance you have traveled is so big that kilometers and astronomical units are becoming too difficult to handle. A new unit is introduced to you by the team of scientists – the light year. A light year (ly) is the distance that light travels in 1 year. Light year is equivalent to 63,240 AU. Since you have traveled 0.16 years at the speed of light, you have been traveling for 0.16 ly. One AU equals the average distance between the Earth and the Sun (149,597,887.7 km or 150,000,000 km). Image Credit: Simulation Curriculum’s Starry Night software https://www.simulationcurriculum.com/ Answer the following questions in your notebook: 3. Why aren’t you able to see the planets around the Sun? 4. Calculate how far (in kilometers) you are from home (Earth). Division of Academics – Department of Science 134 Stop 3 (Station 3): You have arrived at Alpha Centauri. You have traveled 4.3 light years (ly) from Earth – Looking back toward the Sun, you can see other stars. Sirius is the brightest star seen from Earth’s Northern Hemisphere and is 8.6 light years (ly) from Earth. The other star is Alpha Centauri at 4.3 light years (ly) from Earth and can be seen anywhere south of Miami, Florida. One Light year is equivalent to 63,240 AU. Answer the following questions in your science notebook: Image Credit: Simulation Curriculum’s Starry Night software https://www.simulationcurriculum.com/ 5. Calculate how far Alpha Centauri is (in AU) from Earth. 6. How far away is Sirius form Earth in AU? Stop 4 (Station 4): You have traveled 160.000 years since leaving Earth – At this distance you have entered emptier space and all the stars you have been observing have merged into a spiral shaped structure. This is the Milky Way galaxy, our home galaxy. The Milky Way galaxy is 100,000 light years (ly) across. From this distance you Image Credit: Simulation Curriculum’s Starry Night observe the Sun as just one of billions software https://www.simulationcurriculum.com/ of stars. The Sun is located about two-thirds from the center of the Milky Way. 7. What conclusion can you draw by observing the Milky Way diagram regarding where most stars seem to be concentrated in our galaxy. Division of Academics – Department of Science 135 Stop 5 (Station 5): You have traveled 16 million years since leaving Earth – At this distance the Milky Way now is seen as part of family of galaxies called Local Group of Galaxies. Mutual gravitational forces hold all galaxies together, just as gravitational forces in our solar system hold the planets in orbit around the Sun. You decide to write a letter to your science teacher about the wonderful trip you have experienced. How would you address your letter? In other words, what is your cosmic address back home? You need to include the following: galaxy, planet system, planet, hemisphere, continent, country, state, city, street and number, school, classroom number and teacher’s name. Image Credit: Simulation Curriculum’s Starry Night software https://www.simulationcurriculum.com/ Division of Academics – Department of Science 136 SC.8.E.5.3 - Distinguish the hierarchical relationships between planets and other astronomical bodies relative to the solar system, galaxy, and universe, including distance, size, and composition. Activity: Using the 8.5”x14” legal sized paper provided, each group member will complete a poster illustrating how the following celestial objects can be arranged in logical order. You must write a label and description for each object listed. Meteor Planet Constellation Solar System Element Universe Atom Moon Asteroid Star Comet Nebula International Space Galaxy Station Division of Academics – Department of Science 137 Star Classifications Benchmark(s): SC.8.E.5.5: Describe and classify specific physical properties of stars: apparent magnitude (brightness), temperature (color), size, and luminosity (absolute brightness). Summary: To teach this lesson, begin by engaging students with a song about the types of stars, (Mr. Parr’s Types of Stars) and have students sing along a few times until they become familiar with the song. Next, students will examine a set of stars to identify distinguishing characteristics. A good variety of images can be found by conducting a Google images search of “image of stars”. Lead into a discussion of how organizing information can help us learn more about objects and their similarities and differences. Elicit examples the students may already be familiar with in science (Animal Kingdoms, elements, types of clouds, etc.) Invite them to be scientists who study the stars and to discover patterns and classes. Students will then conduct the Star Light, Star Bright: Exploring How Stars are Classified using the star set attachment. Students will create star posters and hang them around the classroom. Allow students to use these posters to answer questions regarding the classification of star according to its physical properties and where its location is on the H-R Diagram. KUD-Objectives: Students will Know: that stars can be classified according to their physical properties: apparent magnitude (brightness), temperature (color) and absolute brightness (luminosity). Students will Understand: the information displayed on a Hertzprung-Russell (H-R) diagram. that much of what we know about stars came from scientists who studied patterns which appear when star surface temperature and luminosity are plotted. Students will be able to Do: Classify a group of stars according to their physical properties. Essential Question: Explain importance and purpose of the H-R diagram. And how it can be used to classify stars according to their physical properties. Division of Academics – Department of Science 138 Lesson Cycle: GRRM* 5E Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Extend/ Elaborate Evaluate You Do Watch Mr. Parr’s Types of Stars song video on you tube and have students sing along a few times until the words become familiar. Give each group a set of star images (or display for the class) and have students identify difference among the stars. Students may identify different colors, sizes, and brightness. Discuss briefly how easy it was to describe the stars in this way using these categories and how someone who never saw stars could know a tremendous amount of information about them. Students will conduct Star Light, Star Bright: Exploring How Stars are Classified using the star set attachment. Note: the stars are labeled by name, temperature and absolute brightness (the circled number). Student products such as CER, DI Menus Instruct each group to arrange the stars on the poster boards which communicates the most information. Challenge them to consider a way that presents all the information discussed. Explain importance and purpose of the H-R diagram and ask probing questions as students use it to answer: Where are the largest stars? Where are the coolest and dimmest stars? Where are the coolest and brightest stars? Where are the hottest and dimmest stars? Where are the hottest and brightest stars? What do you think... colors tell us about temperatures of stars? ... temperature tells us about luminosity? ... size tells us about luminosity? Research, Home Learning Each group will present and explain their poster arrangement to the class. Hand out H-R diagrams to each student. Have them examine the title and the axis labels. Identify the location of our sun on it. Exit Slip Each student will write a paragraph explaining what they did and what they observed about the star data collected. Explain Explore We Do Activities GRRM* Gradual Release of Responsibility Model Teacher Notes: Use the following link to print teacher instructions for the student activity: Star Light, Star Bright: Exploring How Stars are Classified. Student Handouts: Star Light, Star Bright: Exploring How Stars are Classified using the star set attachment. Division of Academics – Department of Science 139 Summative Assessment: When all groups have reported on their findings, ask the class to summarize conclusions from these observations: 1. What can we say about small stars? (less luminous, mostly white and yellow) 2. What can we say about medium stars? (all temperatures and extremes in luminosity; most of the stars are medium sized) 3. What can we say about large stars? (coolest; most luminous, mostly orange and red) 4. Why do you think the bigger stars are more luminous? (they have more mass) Division of Academics – Department of Science 140 A Closer Look of the Inner and Outer Planets http://www.cpalms.org/Public/PreviewResourceLesson/Preview/30675 Benchmark(s): SC.8.E.5.7: Compare and contrast the properties of objects in the Solar System, including the Sun, and moons to those of Earth, such as gravitational force, distance from the Sun, speed, movement, temperature, and atmospheric conditions. Summary: “Begin by engaging students with the "K" (what they already know) of the KWL chart (there is a KWL chart attached to the lesson in the Formative Assessment section if needed). Teacher can show a video or a visual so that the students can visualize the planets. Suggested Videos:” Solar System 101 (National Geographics) The Solar System - A Brief Glance The students will work in small groups of 2-3 (depending on computer access available) to research all of the 8 planets in the Solar System. To keep the students focused on the aligned standard and the Guiding Questions you may choose to use the attached Inner and Outer Planet Research Handout for students to record and organize their research. Resources for students use when researching the inner and outer planets: http://solarsystem.nasa.gov/kids/index.cfm http://www.planetsforkids.org/ Then the students will work in their groups to complete a Venn Diagram comparing one inner and one outer planet. In the Venn diagram, the students should write specific properties that make the inner and outer planets similar and different. Suggestion: The teacher can assign student groups a specific characteristic to compare if desired. Using the research they've conducted, their KWL Charts, their Venn Diagrams, and their Inner and Outer Planet Research Handout students will work individually to create a solar system poster. The attached Student Checklist can be used with the students to keep them on track and aware of the teachers expectations. KUD-Objectives: Students will Know: The different properties of the inner and outer planets in our Solar System and compare them to Earth. Students will Understand: The similarities and differences of the inner and outer planets and their moons, and compare and contrast this information with the Earth and its moon. Students will be able to Do: Complete a Venn Diagram comparing one inner and one outer planet. Using the research they've conducted, their KWL Charts, their Venn Diagrams, and their Inner and Outer Planet Research Handout students will work individually to create a solar system poster. Division of Academics – Department of Science 141 Essential Question: Name the inner and outer planets, and explain how they are different and why they are different? Lesson Cycle: GRRM* 5E You Do Activities The teacher can start the lesson with a KWL graphic organizer that will be completed by the students. Then the teacher can show a video, from the suggested video links above, to help the students can visualize the planets. Students will complete a Venn Diagram with their research and organize it into their KWL charts. Student products such as CER, DI Menus Students will use the Venn Diagrams they completed along with their research (organized into their KWL charts) to create a Solar System poster comparing an inner and outer planet of their choosing. The teacher can use the following Poster Rubric to measure the students’ development of their Solar System posters. This attached Student Poster Checklist can be shared with students to keep them on track (blank sections are included on the student checklist for teachers to easily add their own items). Research, Home Learning An appropriate extension for this lesson, tied to both of the aligned standards would be a writing assignment addressing the following prompt. Explain We Do Explore Engage I Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Evaluate Extend/ Elaborate "If you could live on any other planet besides Earth which one would you choose and why?" Exit Slip Students should be instructed to include details for how they will survive based on their research on atmospheric conditions and common characteristics of the planet. For example, if the planet has extreme temperatures or limited oxygen how might they ensure their survival? Students will conduct a gallery walk and compile a list of 5 characteristics for each of the inner and outer planets based on the information obtained from the student made posters. Using this information. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 142 Summative Assessment: 1. What do you think the temperature is on the planets closest to sun? Why? 2. Where is Earth located? Is it an inner or outer planet? 3. Compare and contrast the properties of inner and outer planets. Division of Academics – Department of Science 143 Student handouts KWL Venn Diagram Inner and Outer Planet Research Handout Checklist for Solar System Poster Rubric Division of Academics – Department of Science 144 Earth, Moon and Sun Relationships Benchmark(s): SC.8.E.5.9: Explain the impact of objects in space on each other including: 1. The Sun on the Earth including seasons and gravitational attraction 2. The Moon on the Earth, including phases, tides, and eclipses, and the relative position of each body. Summary: Students are engaged in a discussion of the Sun, Moon, Earth system and use a video to reference for the discussion. Then the students will engage in an exploration of the seasons, tides, phases of the moon, and eclipses. The minimum materials needed include light sources, globes, and a representation of the moon (an additional round object). Based on the exploration, students will explain the interaction of the Sun, Moon and Earth including positioning to describe the various events. KUD-Objectives: Students will Know: explain how the relative positions of the Earth, moon and Sun are responsible for the moon phases. The amount of the moon’s face that is illuminated by the Sun depends on where the moon is in relation to the earth and Sun. Students will Understand: recognize that the moon does not produce its own light, but reflects the light of the Sun. Students will be able to Do: To know where the moon is in relation to the Sun and the Earth during each of the following moon phases: Essential Question: How do the Sun, Earth, and moon interact to influence seasons, tides, phases, and eclipses? Division of Academics – Department of Science 145 Lesson Cycle: GRRM* Engage I Do 5E Evaluate You Do Extend/ Elaborate Explain Explore We Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Labs, Investigations, DI Opportunities Student products such as CER, DI Menus Research, Home Learning Activities Students are engaged in a discussion on the Earth-Sun-Moon system including the interactions among the three objects and the effects on the Earth.. The video linked below can be used as a source of reference for the discussion. BBC - Astronomy and Space In small groups, students create a model of seasons, eclipses, moon phases, and tides and go through each phase. The materials needed are light sources, globes, and a representation of the moon (an additional round object.). If organizing the groups as stations for each concept, the season station will not need a representation of the moon, but thermometers may be used as an additional tool. Students use the “Influenced Events” table (below) to explain the interactions among the Sun, Moon, and Earth. The students should share their understandings with the class. The teacher should facilitate the student discussion to avoid and correct misconceptions. Prepared images or a PowerPoint my aid the discussion. Students research a rare event related to the concepts and describe why they are unique. Examples are: super moon, red moon, total solar eclipse Exit Slip Summative assessment (below). GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 146 Summative Assessment: SC.8.E.5.9 1. Earth revolves around the Sun, and the Moon revolves around Earth. The Moon’s orbital path is sometimes above and sometimes below the plane of Earth’s orbit, as shown in the diagram below. What would happen if Earth’s orbit and the Moon’s orbit were in the same plane? SC.8.E.5.9 A. B. C. D. Eclipses would occur every month. The Moon would not have phases. All sides of the Moon would be visible from Earth. The same side of the Moon would always face the Sun. 2. What force causes tides? A. The Earth's gravitational pull. B. The sun's gravitational pull. C. The moon's gravitational pull. D. The wind 3. Which of the following statements correctly explains why we experience seasons? A. As the Earth moves away from the Sun, we change from summer to fall to winter. As the Earth moves closer to the Sun, we change from winter to spring to summer. B. As the Earth spins on its axis, we experience seasons. Each 1/4 spin of the Earth on its axis represents a change in season. C. Earth's tilt on its axis means one hemisphere leans toward the Sun, causing it to experience warmer temperatures. As Earth revolves around the Sun, a different hemisphere leans toward the Sun, causes warmer temperatures in that hemisphere. D. The Moon moving in front of the Sun causes temperatures on Earth to drop, which causes winter. When it moves behind the Sun, a rise in temperature causes summer. 4. Draw a diagram showing OR describe the difference between how a full moon and new moon are formed. Division of Academics – Department of Science 147 Student Directions: For the Sun and Moon columns, describe the role each object play for the given events. For the Earth column, describe the observable effect of the given events. (Note: The sun has some influence on all of the events, but the moon only has an influence on 3 of 4 of the events.) Influenced Events Sun Moon Earth Phases Seasons Tides Eclipses Division of Academics – Department of Science 148 Using a light source, globe, and other round object to represent the moon (when necessary) model how each even occurs, describe your model and respond to the questions below 1. Eclipses A. Model description B. Draw a diagram to show the placement of the Earth, Moon, and Sun during a solar eclipse. Describe how this is different from a lunar eclipse. 2. Seasons A. Model description B. Draw a diagram that illustrates the changes of the seasons. Label the positions of the Earth in which each season is observed. Division of Academics – Department of Science 149 3. Phases of the Moon A. Model description B. Create a diagram to show the phases of the moon. 4. Tides A. Model description B. Draw a diagram the system of the Earth, Moon, and Sun to show the highest possible tides. Division of Academics – Department of Science 150 What’s the Matter? Benchmark(s): SC.8.P.8.4: Classify and compare substances on the basis of characteristic physical properties that can be demonstrated or measured; for example, density, thermal or electrical conductivity, solubility, magnetic properties, melting and boiling points, and know that these properties are independent of the amount of the sample. Summary: Students will engage with an NBC Learn video to see how physical properties can be used to isolate gold from complex mixture of minerals. Students will then be able to explore the physical properties or various materials, either though an investigation of the properties of a set of materials (website linked below) or by separating materials, similarly to the video, using an essential lab. Students can then explain their understanding of physical properties through a Claim-EvidenceReasoning (CER). KUD-Objectives: Students will Know: All matter has certain physical properties that can be used to classify or distinguish materials from one another. Students will Understand: Each material has a unique set of physical properties and the properties are the same regardless of the sample size. Students will be able to Do: Test the physical properties of various materials to classify the materials according to the physical properties. Essential Question: Scientists often find mysterious materials. Why are physical properties important for identifying unknown substances? Division of Academics – Department of Science 151 Lesson Cycle: Activities Engage Introduce the essential question to students to assess prior knowledge. After the video: Have students discuss the following questions. What processes would need to take place to extract gold from the land? How can physical properties be used to isolate gold from the land? Have students explore the physical properties of matter with the “What’s the Matter” activity. If students have not yet performed the inquiry version of this activity in the essential lab document, the essential lab should be used. Extend/ Elaborate Evaluate You Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Where does gold come from? How is it harvested or mined? Use the NBC Learn video, Modern Day Gold Rush, to engage students in the use of physical properties During the video: Have students make observation of the landscape from which gold is mined and describe how the gold is being processed. Explain We Do 5E Explore GRR M* I Do Labs, Investigations, DI Opportunities Student products such as CER, DI Menus Students complete a CER for the essential question. Research, Home Learning Research the physical properties of crude oil and develop a plan for removing oil from water and from sandy beaches to be used as an oil spill cleanup plan. Exit Slip Complete the Summative Assessment GRRM* Gradual Release of Responsibility Model Summative Assessment Key: 1. C 2. D Division of Academics – Department of Science 152 Summative Assessment SC.8.P.8.4 5. Look at the two pictures below. They show what happened when two solid blocks were each put in a jar containing a liquid. Based just on what you can see in the pictures, what can you say about the blocks and the jars? SC.8.P.8.4 A. B. C. D. The liquid in the jars must be water. The block in jar 1 weighs more than the block in jar 2. The block in jar 1 is floating lower in its liquid than is the block in jar 2. The block in jar 1 must be made of metal and the block in jar 2 must be made of wood. 6. After students completed a science investigation on electrical conductivity, the teacher gave them a copy of this chart listing groups of elements. The students' task is to determine which group of elements are all electrical conductors. Group A Fluorine Argon Bromide Sulfur Group B Copper Nickel Krypton Tellurium Group C Boron Silicon Antimony Antimony Group D Zinc Silver Aluminum Gold Which group should they choose? A. Group A B. Group B C. Group C D. Group D Division of Academics – Department of Science 153 Title: Elements, Compounds, Mixtures, Oh My! Benchmark(s): SC.8.P.8.5: Recognize that there are a finite number of elements and that their atoms combine in a multitude of ways to produce compounds that make up all of the living and nonliving things that we encounter. SC.8.P.8.9 Distinguish among mixtures (including solutions) and pure substances. Summary: To teach this lesson, begin by stating the expected outcome of the lesson by reviewing the essential question. Engage students by discussing compounds and mixtures they may find in everyday life. Next, show students the BBC Compounds and Mixtures video to expose them to content. Use the E, C, M PowerPoint slide 1 to frontload vocabulary and contrast elements, compounds, and mixtures. Allow students the opportunity to explore the atom and the development of simple molecules and mixtures of elements and compounds so they may attain a visual representation of the terminology through practice using the Build a Molecule phET Simulation. Students can practice identifying elements, compounds, and mixtures using the ECM manipulatives where they cut out and categorize pictorial examples of elements, compounds, and mixtures of each. In lieu of the manipulatives, students can also create Frayer models of each term where the definition, an illustration, common examples and synonyms for each term is provided in an organizer. These activities can be easily constructed in the Interactive Science Notebooks on the “Student” side. Teachers can check for understanding by probing students about their decisions and asking them to share their work. The lesson can be elaborated/extended to include student reflection in the ISN for HW, where the Essential Questions are answered using evidence from activities done in class or notes taken for the day. Reinforcement can also be established using an extended handout that entails the classifying elements, compounds, and mixtures. Finally, teachers can assess students authentically through fun and games by using the E,C,M PowerPoint. Here, images are provided where students work in teams to classify. If there is a tie, you can ask students to identify blood as an element, compound, or mixture to really get them thinking. Teachers can also assess acquisition of benchmark content using the summative assessment questions provided as an exit slip. KUD-Objectives: Students will Know: the hierarchical relationship between atoms, elements and compounds. Students will Understand: atoms combine in many ways to make up all matter. a model or simulation of atoms, elements, and compounds, such as the Build a Molecule simulation, is a necessary learning tool as these particles are too small to be seen by the naked eye. Students will be able to Do: analyze models of materials to classify materials as elements, compounds or mixtures Essential Questions: How would you differentiate between an atom, an element, and a compound? What is the relationship between atoms, elements, compounds, and mixtures? Division of Academics – Department of Science 154 Labs, Investigations, DI Opportunities Student products such as CER, DI Menus Evaluate You Do Extend/ Elaborate Explain We Do Explore Engage Lesson Cycle: GRRM* 5E Suggested Activities I Do Formative Assessment Probe, Video clip, Teacher Demonstration Research, Home Learning Game or Summative Assessment Questions Activities Present the essential question to students before starting the lesson Engage by asking students to discuss mixtures found in everyday life and how they are able to know this Observe BBC Compounds and Mixtures Use E,C,M PowerPoint first slide to explain difference between elements, compounds, and mixtures. Use Build a Molecule phET simulation to construct simple molecules from atoms and differentiate compounds from mixtures of elements and compounds. Use E, C, M Manipulatives to categorize the diagrams of each. Students need glue, scissors, and template. This can easily be incorporated on the student-centered side of an ISN. Students create a graphic organizer using the Frayer Model for elements, compounds, and mixtures. Where they define, provide pictorial example, list common examples, and synonyms for each term. Revisit essential question through open discussion or have students answer the EQ in their ISN for HW and provide examples. Elements, Compounds, and Mixtures Reinforcement: Identify each substance in a diagram to reinforce lesson. Use E,C,M PowerPoint and three colored index cards per group that indicate element, compound, or mixture. Show PowerPoint and wait for groups to decide which index card to hold up while determining what is seen. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 155 Summative Assessment: 1. Two types of models that can be used to show details of the structures of cells are shown below. Which of the following describes a limitation of the drawing but NOT the clay model? A. B. C. D. It does not represent the main parts of a cell. It does not contain the correct number of nuclei. It cannot represent a living cell, since a true cell is three-dimensional. It cannot represent a living cell, since the cytoplasm should be in constant motion. 2. Living and nonliving things are made up of matter. Which of the following statements is true about matter? A. B. C. D. Nonliving and living things can be made up of combined elements. Living things are composed of carbon, hydrogen, and oxygen only. Living things are made up of elements, and nonliving things are made of minerals. Nonliving things are composed of pure substances, while living things are made of more complex units. 3. Ocean water is a combination of salt and water. Which of the following best describes the composition of ocean water? A. B. C. D. It is an element, since water is found in all living things. It is a suspension, since particles can be found in ocean water. It is a compound, since it results from the combination of elements. It is a solution, since it is made up of one substance dissolved in another. Division of Academics – Department of Science 156 4. Jimmy put some dirt and water into a jar, put the lid on, and then shook the jar. The contents of the jar turned brown. Jimmy set the jar on the table and checked back every 5 minutes for 20 minutes. The pictures show what Jimmy saw. Which of the following best explains what happened in the jar? A. The dirt and water combined to form new compounds B. The water and dirt combined to form a heterogeneous mixture C. The water dissolved some of the dirt particles, creating a solution D. The dirt broke down into elements and settled in the jar according to density. 5. Which of the following statements regarding the periodic table of elements is true? A. The periodic table does not list all of the known elements in the universe. B. All elements on the periodic table are made up of the same fundamental particles: protons, neutrons and electrons. C. The properties of elements can be predicted by their positions in the periodic table, but their bonding patterns cannot be predicted. D. All nonliving things consist of elements on the periodic table; all living things consist of things that are not listed on the periodic table. Division of Academics – Department of Science 157 Student handout: see links provided E, C, M Manipulatives Elements, Compounds, and Mixtures Reinforcement Division of Academics – Department of Science 158 Changes of Matter Benchmark(s): SC.8.P.9.2 - Differentiate between physical changes and chemical changes. Summary: In this activity, students will observe indicators of physical and chemical changes through various stations throughout the room. It is important to set up stations with materials beforehand. It is best to have students in groups of 4 to 5 if there are large classes to reduce the amount of materials needed to complete the activity. Engage students by observing a YouTube Properties of Matter rap video. Upon watching the video, solicit student responses on types of changes observed. Next, explain the differences between chemical and physical changes. Provide students with the Station Activity handout, recall the directions, and locate the stations around the school. Allot 5-6 minutes per station as students rotate around the school. As students carry out the procedures, they must look for indicators that identify the change that is occurring. Once finished, students summarize the activity in their conclusion and analysis. It is best to revisit the essential question and allow students to share their responses in order to do so. Extend student thinking by applying the lesson concept to the natural process of breathing and ask students to defend their response. KUD-Objectives: Students will Know: They are conducting investigations of physical and chemical changes that “models” what might occur in real life Students will Understand: What indicators can help determine whether a physical or chemical change has occurred Students will be able to Do: Provide evidence to prove that a chemical and/or physical change has occurred from an investigation Essential Question: How could you differentiate between a physical and chemical change? What are some indicators that a physical or chemical change has occurred? Division of Academics – Department of Science 159 Lesson Cycle: GRRM* 5E Engage I Do Explain Explore We Do Suggested Activities Students observe the Youtube Properties of Matter Rap, an educational video about the properties of matter and Rap physical/chemical changes set to the music of Justin Teacher Bieber's "Boyfriend" with scientific pictures found from Demonstration google image search. Ask students what examples of physical and chemical changes they noticed throughout the video. In groups, students navigate to each station activity. Students will follow the directions and record whether it is a physical or chemical change. Teachers must prepare 9 stations with the following materials: 1. A cup of cornstarch, dropper, measuring spoon, beaker of water and dropper 2. A piece of apple or banana on a paper towel Labs, 3. A cup or beaker of baking soda and vinegar, an Investigations, empty cup or beaker and dropper DI 4. A cup or beaker of salt, water and a spoon Opportunities 5. A cup or beaker of water and bleach, yellow food coloring, and a dropper 6. Paper towel and play dough 7. An antacid tablet and a cup or beaker of water 8. A Ziploc bag of diaper polymer (cut a diaper and take out the insides in a Ziploc bag and shake it), a measuring spoon and a cup or beaker of water 9. A beaker with water, two empty cups or beakers, magnesium sulfate and sodium carbonate Student products such Students complete an activity handout where they record as CER, DI their observations at each station. Menus Extend/ Elaborate You Do Evaluate Activities Research, Home Learning Revisit the Essential Question and provide students with feedback on the day’s activities. Students will extend their thinking and write a paragraph in the ISN answering the following question based on today’s lesson and their prior knowledge. When we breathe, we breathe in oxygen O2 and breathe out carbon dioxide CO2. Is this an example of a chemical change or a physical change? Support your reasoning. Exit Slip Students complete the benchmark assessment. GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 160 SC.8.P.9.2 Summative Assessment 1. A student adds water and sugar to a jar and seals the jar so that nothing can get in or out. The student then finds the mass of the jar containing the water and sugar. After some sugar dissolves, the student finds the mass of the jar and its contents again. What will happen to the mass of the jar containing the water and sugar after some of the sugar dissolves? A. The mass will stay the same. B. The mass will increase. C. The mass will decrease. D. The mass will depend on how much sugar dissolves. 2. Robert is hiking through the forest and writing down his observations. He steps on a branch and it breaks into several pieces. Which of the following best describes the resulting properties of the branch? A. The density of the branch decreased, since it now takes up less space. B. The molecular arrangement of the branch changed as the broken pieces changed phase. C. The total mass of the branch pieces is the same, and only a physical change has occurred. D. The chemical composition of the branch changed as the broken pieces reacted with the environment. 3. You spill a little water on a tile floor but do not have time to wipe it up. A few hours later, most of the water is gone. What happened to the water? A. The water molecules were destroyed B. The water molecules got smaller and now take up less space C. The water molecules became a gas and are now in the air D. The water molecules broke down into hydrogen and oxygen atoms, which are now in the air 4. Helium gas is used in balloons. When helium gas is cooled enough, it becomes a liquid. What do you think happens when helium turns into a liquid? A. Some of the helium has turned into water B. The helium has turned into a different liquid C. Some helium has turned into water, some into another liquid and the rest is helium D. It is all still helium, but in a liquid form 5. Chemical changes involve a change in the composition of a substance. Which of the following is NOT an indicator that a chemical change has occurred? A. Color change Division of Academics – Department of Science 161 B. Change in mass C. Formation of a precipitate D. Increase or decrease in temperature Division of Academics – Department of Science 162 Name: _______________________________________ Period: ________ Changes of Matter Activity Date: ____________ Question: What are some clues that a chemical change has occurred? Background Information: Chemical changes occur when a substance combines with another to form a new substance or, alternatively, decomposes into two or more different substances. These processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. Physical changes are changes affecting the form of a chemical substance, but do not change the chemical composition of that substance. A physical change involves a change in physical properties. Hypothesis: Station 1 Physical Chemical Station 2 Physical Chemical Station 3 Physical Chemical Station 4 Physical Chemical Station 7 Physical Chemical Station 5 Physical Chemical Station 8 Physical Chemical Station 6 Physical Chemical Station 9 Physical Chemical Directions: In this activity, you will observe both physical and chemical changes. Make sure that the person conducting the experiment in your group wears gloves at all times. It is important to read the procedures for each station first and form a hypothesis for each station prior to conducting each task. Make observations before you determine whether you have witnessed a physical or chemical change. Division of Academics – Department of Science 163 Procedures: Station 1: Mix a tablespoon of cornstarch and 50 ml of water in a plastic cup or beaker. Use a dropper to put one drop of iodine solution into the beaker. Record your observations. Station 2: Observe a piece of cut fruit on a paper towel. It was cut fresh this morning. Record you observations. Station 3: Measure out 1 teaspoon of baking soda and place it in a cup or beaker. Place five drops of vinegar onto the baking soda. Record you observations. Station 4: Mix a tablespoon of salt in 100 ml of water and stir. Record you observations. Station 5: Fill a beaker with 50 ml of water. Put one drop of yellow food coloring into the water and stir with a spoon. Put five drops of bleach into the colored water. Record you observations. Station 6: Create a cat out of play dough. Record your observations. Station 7: A tablet is provided for you. Place half of a tablet in a cup or beaker of water. Record you observations. Station 8: Place one tablespoon of the polymer into a beaker or plastic cup and add 50 ml of water. Record you observations. Station 9: Teacher led demonstration. Wait for or call your teacher over to the station when ready. Watch as your teacher combines two clear colorless solutions. One is a sodium carbonate solution and the other was a magnesium sulfate solution. Record your observations. Teacher directions for Station 9: Pour 100 mL of water in one clear plastic cup and add 10 g (about 1 tablespoon) of magnesium sulfate. Stir until the solution is clear. Pour 50 mL of water in another clear plastic cup and add 5 g (about 1 teaspoon) of sodium carbonate. Stir until the solution is clear. Hold up the two clear colorless solutions and slowly pour the smaller amount into the larger. Division of Academics – Department of Science 164 Collect Data and make observations Station Observation Number Light Color Bubbles/gas 1. Corn Starch & Precipitate Heat No changes occurred Iodine Other: _________________________________________ Light Color Bubbles/gas 2. Fruit Precipitate Heat No changes occurred Other: _________________________________________ Light Color Bubbles/gas 3. Baking Soda & Precipitate Heat No changes occurred Vinegar Other: _________________________________________ Light Color Bubbles/gas 4. Salt Precipitate Heat No changes occurred Water Other: _________________________________________ Light Color Bubbles/gas 5. Food coloring Precipitate Heat No changes occurred & Bleach Other: _________________________________________ Light Color Bubbles/gas 6. Play Precipitate Heat No changes occurred dough Other: _________________________________________ Light Color Bubbles/gas 7. Tablet Precipitate Heat No changes occurred Other: _________________________________________ Light Color Bubbles/gas 8. Diaper Precipitate Heat No changes occurred Polymer Other: _________________________________________ 9. Sodium Color Bubbles/gas Carbonat Light e& Precipitate Heat No changes occurred Magnesiu Other: _________________________________________ m Sulfate Division of Academics – Department of Science Physical or Chemical Change? Change: _________________________________ Change: _________________________________ Change: _________________________________ Change: _________________________________ Change: _________________________________ Change:__________________________________ Change: _________________________________ Change: _________________________________ Change: _________________________________ 165 Conclusion and Analysis: The purpose of this activity was _________________________________________________________________________________ ________________________________________________________________________________________ It was observed that stations __________________________________________________________________ were all examples of ___________________________________________________________ because ________________________________________________________________________________________ ___________________________________________________________. Meanwhile, stations ____________________________________________________________________ were examples of a _______________________________________________________________ because ________________________________________________________________________________________ ________________________________________________________________________________________ _____________. I learned that in order to identify whether or not a chemical change has occurred, I can look for indicators such as ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ ________________________________________________________________________________________ Division of Academics – Department of Science 166 Sorting Out Cycles in Nature Benchmark(s): SC.8.L.18.4: Cite evidence that living systems follow the Laws of Conservation of Mass and Energy. Summary: To begin this lesson, introduce the lesson topic as biogeochemical cycles in nature. Break down the word meaning using its word parts to allude to the cycles found in nature. Introduce the Essential Questions for the lesson. Next, students will observe the Discovery Education video segment, Earth Cycles and try to identify the various cycles within the video. Encourage students to practice note-taking skills while observing the video. Recap through discussion with the students, the cycles presented in the video. Jog their thoughts by reminding them to continue to think about how the cycles demonstrate the Law of Conservation of Mass and Energy as they continue with the next activity. Next, put the students into collaborative groups. You will need to print cards for the Carbon Cycle Card activity for each group. You will also need a large print out or poster of the Carbon Cycle for one of the group investigations (investigation C). In the first Investigation, all groups will sort their cards to identify the different ways carbon cycles in the ecosystem as a source (release carbon) or a carbon sink (absorb carbon). Discuss their findings and correct student misunderstandings of any card they felt was difficult to sort. Refer back to the Essential Question and observe student responses. Commend students on their work together and separate the next investigations so that each group can conduct an investigation at their achievement levels. Inform all groups that they have 15-20 minutes to come up with their findings to share with the class. Have each group explain their results to everyone else. All other students must pay attention in order to complete their worksheet, leaving them engaged at all times. Finally, recap the carbon cycle activity’s purpose and outcome to the students by referring to the essential question and allowing a student to share a modified response or support the previous answer stated by classmates earlier. Explain that the home learning assignment is to provide evidence in their writing to answer the essential question in their ISN. Students can take the summative assessment at the end of the lesson or study using the BYOD options and the Pearson textbook pages to take the assessment the following class. KUD-Objectives: Students will Know: Various cycles in nature (water, carbon, nitrogen, oxygen) obey the Law of Conservation of Mass and Energy. Students will Understand: Students will be able to explain that living systems obey the Law of Conservation of Mass and the Law of Conservation of Energy. Students will be able to Do: Students will be provided the opportunity to investigate the Law of Conservation of Mass and Energy by planning and carrying out a scientific investigation. Essential Question: Can you provide an example of how a living system obeys the Law of Conservation of Mass? Can you give an example of how a living system obeys the Law of Conservation of Energy? Division of Academics – Department of Science 167 Lesson Cycle: 5E Engage GRR M* I Do We Do Suggested Activities Formative Assessment Probe, Video clip, Teacher Demonstration Evaluate You Do Use the Essential Questions of the lesson to assess prior knowledge of students. Watch the Discovery Education Earth Cycles video segment and ask students to look for the different cycles in nature. Tell students to see if they can answer the essential question based on the video segment. Encourage students to take notes on the cycles as the video plays along. (Earth Cycles video segment within Standard Deviants Teaching Systems: Earth Science Module 08: Earth Systems) Investigate the cycling of carbon through the nature through collaborative groups using the Carbon Cycle Cards (21 cards per group) and the Carbon Cycle Activity worksheet. The whole class conducts investigation A together where they identify carbon sources in nature (processes that release carbon) and carbon sinks (processes that absorb carbon). Share your findings and relay this back to the Law of Conservation of Mass and Energy in open discussion. Let students continue to explore by differentiating Investigations B, C, and D. Have each group choose a spokesperson and share their findings. Student products such as CER, DI Menus Students complete the Carbon Cycle Activity worksheet. Research, Home Learning Answer the Essential Questions in your ISN in a paragraph. Use evidence from the day’s activities and the video to support your reasoning. Exit Slip Complete the Summative Assessment Extend/ Elaborat e Explain Explore Labs, Investigations, DI Opportunities Activities GRRM* Gradual Release of Responsibility Model Division of Academics – Department of Science 168 Teacher Guide Carbon Cycle Card Activity (Adapted from Carbon Cycle Activity) Essential Question: How does carbon dioxide cycle through the ocean, land, and atmosphere? Materials: Print out of Carbon Cycle cards (21) for the number of groups you wish to create and a large image or poster of the Carbon Cycle for Investigation B. Investigation A Place each card image-side up on a tabletop or desk. Ask students to sort the cards into two categories: images of organisms, activities, or processes that release carbon dioxide (sources) vs. those that absorb carbon dioxide (sinks). If students are unsure about some cards, have them set those aside. Discussion 1) Read the backs of the cards in the “uncertain” pile. After discussing, put these in the correct category. 2) Count the cards in each group. Which has more, sources or sinks? (sources) 3) Distinguish between natural processes and human activities depicted on the cards. a) For the natural processes, which ones release carbon dioxide? b) Which ones absorb carbon dioxide? c) What absorbs about half of the carbon dioxide being generated by humans burning fossil fuels for transportation and electricity? (the ocean) d) For human (anthropogenic) sources, which ones involve burning of fossil fuels? Investigation B Use only human-based source cards. Ask students to sort cards into human-use categories such as manufacturing of products, transportation, electricity, and other categories by using both the image and the text. Ask students to select three cards representing activities that are part of their daily lives. Discussion 1) Ask students to describe their three cards and how each activity is incorporated into their day. 2) Ask students to brainstorm ways they might reduce their emissions of carbon dioxide. Investigation C Using a poster or large image of the carbon cycle, place the cards in the appropriate places in the cycle, taking care to match the processes (e.g., respiration, photosynthesis, etc.) shown in the cycle. Investigation D Thinking about the processes represented by the images (e.g., photosynthesis, decay, etc.), sort the cards into slow-acting or infrequent processes vs. fast-acting or frequent processes. Discussion 1) If sources release carbon dioxide faster than natural processes can handle it, what would you expect to happen in the system? Summative Assessment Key: 1) C 2) A 3) A 4) B 5) A 6) D Division of Academics – Department of Science 169 Summative Assessment SC.8.L.18.4 Write the letter that best answers the question in the space provided. ___ 1. The diagram shows how the organisms get energy. What goes in the box labeled Energy source? A. a fish B. soil C. the sun D. water ___ 2. The graph shows the changes in carbon dioxide in the atmosphere over more than 40 years. Which of the following is the best conclusion you can draw from the graph? A. The amount of carbon dioxide in the atmosphere has been steadily increasing since 1960. B. The data set is too irregular to determine how the amount of carbon dioxide has changed. C. Fossil fuels have caused carbon dioxide levels in the atmosphere to increase since 1960. D. Carbon dioxide levels in the atmosphere have been increasing since the last ice age. Division of Academics – Department of Science 170 ___ 3. Which best explains the process of a biogeochemical cycle? A. It is a cycle that passes the same molecules around over and over in the biosphere. B. It is a cycle that passes the same molecules in one direction through an ecosystem. C. It is a cycle that occurs once a year in the biosphere. D. It is a cycle that occurs monthly within the biosphere. ___ 4. Which of the following is one way that carbon enters the atmosphere? A. Through animal waste. B. Through the process of photosynthesis C. Through carbon fixation D. Through sediment weathering and erosion ___ 5. Carbon exists in many forms on Earth. The diagram below shows part of the carbon cycle. What is happening in Step 1? A. Animals are releasing energy into the environment and storing carbon. B. Animals are decomposing and releasing carbon into the soil. C. Animals are converting carbon dioxide from the atmosphere to oxygen. D. Animals are breaking down organic molecules and releasing carbon dioxide into the atmosphere Division of Academics – Department of Science 171 Student version/handout Use the worksheet link provided Carbon Cycle Activity worksheet Investigation A Place each card image-side up on a tabletop or desk. Sort the cards into two categories: images of organisms, activities, or processes that release carbon dioxide (sources) vs. those that absorb carbon dioxide (sinks). If you are unsure about some cards, set those aside. Discussion 1) Read the backs of the cards in the “uncertain” pile. After discussing, put these in the correct category. 2) Count the cards in each group. Which has more, sources or sinks? (sources) 3) Distinguish between natural processes and human activities depicted on the cards. e) For the natural processes, which ones release carbon dioxide? f) Which ones absorb carbon dioxide? g) What absorbs about half of the carbon dioxide being generated by humans burning fossil fuels for transportation and electricity? (the ocean) h) For human (anthropogenic) sources, which ones involve burning of fossil fuels? Investigation B Use only human-based source cards. Sort cards into human-use categories such as manufacturing of products, transportation, electricity, and other categories by using both the image and the text. Select three cards representing activities that are part of your daily lives. Discussion 1) Describe their three cards and how each activity is incorporated into their day. 2) Brainstorm ways they might reduce their emissions of carbon dioxide. Investigation C Using a poster or large image of the carbon cycle, place the cards in the appropriate places in the cycle, taking care to match the processes (e.g., respiration, photosynthesis, etc.) shown in the cycle. 1) Draw the poster, making sure to label all the processes and steps/ Investigation D Thinking about the processes represented by the images (e.g., photosynthesis, decay, etc.), sort the cards into slow-acting or infrequent processes vs. fast-acting or frequent processes. Discussion 1) If sources release carbon dioxide faster than natural processes can handle it, what would you expect to happen in the system? Write your response. Division of Academics – Department of Science 172 ANTI-DISCRIMINATION POLICY Federal and State Laws The School Board of Miami-Dade County, Florida adheres to a policy of nondiscrimination in employment and educational programs/activities and strives affirmatively to provide equal opportunity for all as required by law: Title VI of the Civil Rights Act of 1964 - prohibits discrimination on the basis of race, color, religion, or national origin. Title VII of the Civil Rights Act of 1964, as amended - prohibits discrimination in employment on the basis of race, color, religion, gender, or national origin. Title IX of the Educational Amendments of 1972 - prohibits discrimination on the basis of gender. Age Discrimination in Employment Act of 1967 (ADEA), as amended prohibits discrimination on the basis of age with respect to individuals who are at least 40. The Equal Pay Act of 1963, as amended - prohibits gender discrimination in payment of wages to women and men performing substantially equal work in the same establishment. Section 504 of the Rehabilitation Act of 1973 - prohibits discrimination against the disabled. Americans with Disabilities Act of 1990 (ADA) - prohibits discrimination against individuals with disabilities in employment, public service, public accommodations and telecommunications. The Family and Medical Leave Act of 1993 (FMLA) - requires covered employers to provide up to 12 weeks of unpaid, job-protected leave to “eligible” employees for certain family and medical reasons. The Pregnancy Discrimination Act of 1978 - prohibits discrimination in employment on the basis of pregnancy, childbirth, or related medical conditions. Florida Educational Equity Act (FEEA) - prohibits discrimination on the basis of race, gender, national origin, marital status, or handicap against a student or employee. Florida Civil Rights Act of 1992 - secures for all individuals within the state freedom from discrimination because of race, color, religion, sex, national origin, age, handicap, or marital status. Veterans are provided re-employment rights in accordance with P.L. 93-508 (Federal Law) and Section 295.07 (Florida Statutes), which stipulates categorical preferences for employment. Revised 9/2008