Unit 4 Properties Unit Question How can we compare objects in our world? Focus Questions • How are objects alike and different? • How are solid and liquid water different? • What objects can be moved by magnets? Grade 1 Detroit Public Schools Physical Properties Office of Science Grade 1 Unit Question: How Can We Compare Objects in Our World? Focus Question: How are objects alike and different? Content Statement: P.PM.E.1 Physical Properties. All objects and substances have physical properties that can be measured. GLCE: P.PM.01.11- Demonstrate the ability to sort objects according to observable properties such as color, shape, size, sinking and floating. Depth of Knowledge: Level 2 Cross Curricular Connections: ELA: describe informational text patterns including descriptive, sequential, and enumerative, Social Studies – using calendars and maps, describing physical environments. Mathematics – Measurement, Size is a property used in describing objects. Collect and organize data to use in pictographs. Read and interpret pictographs. Months April Key Concepts: sort, properties, poles, solid, liquid, magnet, push, pull, attract, repel Teaching Objectives And Resources Suggested Activities 1. 1. Unit Pre-Test. Determine prior knowledge/ student understanding of GLCEs. • CCG. Unit Pre Test How Can We Compare 2. Sort solid objects according to observable properties, such as color, shape, size, texture, as well as liquid and solid. Objects? • • 3. Delta Science Module, Properties, Module Overview, Hands-on Activities 1-7: What Are Properties, Describing Properties, Size and Color, Shape, Texture, Weight, Properties of Solids. CCG. Properties - Hardness. Using a graphic organizer to illustrate, by means of a continuum line, the degree of hardness of an object in relation to that of other objects. Demonstrate how specific properties of solid materials can have specific uses in construction. • 4. 2. • 3. 4. FOSS Solids and Liquids Module, Module Overview, Investigation 1 - Solids, Parts 1-3. CCG. Building with Wonderful Junk. Observe how objects behave in water and predict whether various objects will sink or float. • Delta Science Module, Properties, Activity 5. 10, Sink or Float. 6. 7. 8. 2 Provide a variety of objects for students to observe and describe according to their own criteria. Give students the opportunity to attach their own language to describing objects before introducing the properties of objects. Have students describe objects to one another and have their partner guess what the object is by the student’s description. Add objects to the students’ exploration that have a new property to describe, such as objects that are squishy, fuzzy, or wet (cotton balls, wet sponge, cup of water) to increase their observation and vocabulary skills Play the game “I’m Thinking of Something…” and describe a common object in the room that by its properties. Have students try to guess what object you are describing. Have students list the different properties you used to describe the object. Classify and record terms commonly used by students in their initial descriptions of properties of a variety of objects. Ask students what property they are using when they describe the object as red, or green, etc. Ask students to sort a variety of objects according to common properties that they observed using their own sorting process. Have students share their sorting procedure with the rest of the class. As a class discuss the difference in different sorting techniques. Make a chart of properties and list objects Detroit Public Schools Physical Properties Office of Science Grade 1 on the chart that can be described with the list of properties. 9. Introduce measurement tools and units for students to measure different sizes of objects, such as weight, length, width, volume, etc. 10. Introduce a variety of uncommon shapes and have students describe the shapes and compare them to common shapes. 11. Use matching cards for reinforce the color, size, shape and texture words and color, size, shape and texture of a variety of objects. SAMPLE BELLWORK/DO NOW • • • • How would you explain to a kindergarten student what properties are? Name some ways that you can sort, or group, the children in our classroom. Draw a picture of something floating in water and something sinking. Draw a picture of something rough and something smooth. • • • Give presentations to describe objects by their properties. Use a Venn diagram to sort objects using vocabulary that includes color, size, shape, and texture. Use a Bubble or Double Bubble Thinking Map to describe or compare objects using their properties. SAMPLE ASSESSMENTS 3 Detroit Public Schools Physical Properties Office of Science Grade 1 Unit Question: How Can We Compare Objects in Our World? Focus Question: How are solid and liquid water different? Content Statement: P.PM.E.2 States of Matter. Matter exists in several different states: solids, liquids and gases. Each state of matter has unique physical properties. Gases are easily compressed but liquids and solids do not compress easily. Solids have their own particular shapes, but liquids and gases take the shape of the container. GLCE: P.PM.01.21- Demonstrate that water as a solid keeps its own shape (ice). Depth of Knowledge: Level 2 GLCE: P.PM.01.21- Demonstrate that water as a liquid takes on the shape of various containers. Depth of Knowledge: Level 2 Cross Curricular Connections: ELA: describe informational text patterns including descriptive, sequential, and enumerative, Social Studies – using calendars and maps, describing physical environments. Mathematics – Measurement, Size is a property used in describing objects. Collect and organize data to use in pictographs. Read and interpret pictographs. Months Key Concepts: sort, properties, poles, solid, liquid, magnet, push, pull, attract, repel April/May Teaching Objectives And Resources Suggested Activities 1. 1. Identify characteristics of water as a solid and a liquid. • 2. 3. Delta Science Module, States of Matter, Module Overview, Hands-on Activities 12, 4: What Is a Solid? (Classifying and measuring solids); What Is a Liquid? (Classifying and measuring liquids). 2. 3. Demonstrate that water as a liquid takes on the shape of various containers. • FOSS Solids and Liquids Module, Module Overview, Liquids, Part 3 Liquid Level, “Water Level in Containers,” “Falling Bottle Puzzle,” and “Water Level in a Bottle,” pp. 12-14. Demonstrate that solids keep their shape as they change containers. • FOSS Solids and Liquids Module Investigation 3, Part 1: Solids in Containers, Part 3 Solids in Bottles • CCG: Water and Ice, Investigating Matter, Solid or Liquid: Barthlomew and the Oobleck 4. 5. Explore how puddles are formed and how the shape and size of a puddle is determined by the pooling of water that takes the shape of the land. Further the exploration into properties of objects by introducing objects that are solids and liquids. Have students describe solids by their properties and liquids by their properties. Make observations of a variety of shapes of ice and describe ice as a solid that keeps its shape. Make observations of liquid water and describe liquid water that takes the shape of its container and can be poured from one container to another. Measure the temperature of water as a liquid and water as a solid. Investigate the freezing point of water. Investigate the path of liquid water down slopes and over material. Sample Bellwork/Do Now • • • • Use a Venn diagram to compare and contrast the properties of water as a solid and as a liquid. Write a question about water that you could answer by using a balance. Make a drawing of liquid water in different containers and describe the properties of the water in each container including shape. Make a drawing of ice in different containers and describe the properties of the ice in each container including shape. Sample Assessments • • Give presentations describing the shape of water as a solid or a liquid “Gloop and Glip,” Assessment Activity Sheet 2, Part A, Delta Science Module, States of 4 Detroit Public Schools Physical Properties • Office of Science Grade 1 Matter, p. 106. (Visual analysis, classifying substances as liquid or solid. Assessment Summary Chart, Delta Science Module, States of Matter, Copymasters. (Student Skills Checklist). 5 Detroit Public Schools Physical Properties Office of Science Grade 1 Unit Question: How Can We Compare Objects in Our World? Focus Question: What objects can be moved by magnets? Content Statement: P.PM.E.3 Magnets. Magnets can repel or attract other magnets. Magnets can also attract magnetic objects. Magnets can attract and repel at a distance. GLCE: P.PM.01.31- Identify materials that are attracted by magnets. Depth of Knowledge: Level 1 GLCE: P.PM.01.32- Observe that like poles of a magnet repel and unlike poles of a magnet attract. Depth of Knowledge: Level 1 CROSS CURRICULAR CONNECTIONS: ELA: describe informational text patterns including descriptive, sequential, and enumerative, Social Studies – using calendars and maps, describing physical environments. Mathematics – Measurement, Size is a property used in describing objects. Collect and organize data to use in pictographs. Read and interpret pictographs. Months Key Concepts: sort, properties, poles, solid, liquid, magnet, push, pull, attract, repel May/June Teaching Objectives And Resources 1. 3. 4. 1. CCG:. What Will A Magnet Attract? Mighty Magnet, Stick To It, To What Will A Magnet, Stick, In or Out of the Circle • 2. Suggested Activities Classify objects according to their magnetic properties. 2. Demonstrate that magnetism is a force that can push or pull objects at a distance. • CCG. Through it All, Hungry Hounds • CCG. Finding North and South on Magnets 3. Observe that like poles of a magnet repel and unlike poles of a magnet attract. 4. Measure strength of various magnets in repeated trials. 5. CCG. Holding Power • 6. 7. Explore magnets through observation and their own simple trial and error investigations with a variety of materials that are attracted and not attracted to magnets. Explore, through observation and their own simple trial and error investigations, how the ends of magnets can push away from each other or attract to each other. Explain and describe observations with magnets in their own terms. Elaborate on the sorting by properties by introducing magnet and magnetic and nonmagnetic material. Have students sort objects by their ability to be attracted by a magnet. Have students make pictographs of objects that are attracted and not attracted to magnets. Give students the opportunity to explore the polarity of magnets and experience the “push” and “pull” of like and unlike poles. Investigate how magnets can move objects when the object is on the other side of different materials. Sample Bellwork/Do Now • • • List objects things in your home that will and will not stick to magnets. Students will each write one question that about magnetic properties and exchange it with a classmate for an answer. Students discuss their questions and answers. Draw a picture of what you could do with a magnet. Sample Assessments • • • Use a circle map to describe the terms magnetic, as well as attract and repel Describe pictographs used in exploration of magnets and magnetic material Make a 2 flap magnet foldable. Draw diagrams using arrows to show the motion of bar magnets when like and unlike poles are facing each other. Label the diagram inside the foldable using the words “repel” and “attract”. 6 Detroit Public Schools Physical Properties Office of Science Grade 1 Unit 4 Force and Motion Pre/Post Test Core Curriculum Guide Resource Pages Grade 1 7 Detroit Public Schools Physical Properties Office of Science Grade 1 Name__________________________________________Date_____________________ Grade 1 Unit 4 Properties Pre/Post Test Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. A square alike because , a rectangle a. they are all round. b. they are all shapes. , and a triangle are c. they are all square. d. they are all colors. 2. How does water change when you pour it from a cup to a bowl? a. It changes color b. It changes taste. c. It changes shape. d. It does not change. 3. Which is a picture of solid water? a. c. Ice cube b. River d. Cloud Rain drop 8 Detroit Public Schools Physical Properties 4. Which objects will float? a. Office of Science Grade 1 c. Pennies Bricks b. d. pop bottle Rocks 5. What will happen to these magnets? a. They will push apart or repel. c. They will not move. b. They will stick together or attract. d. They will spin around. 9 Detroit Public Schools Physical Properties Office of Science Grade 1 Grade 1 Unit 4 Properties Answer Section MULTIPLE CHOICE 1. 2. 3. 4. 5. B C A D B 10 Detroit Public Schools Physical Properties Office of Science Grade 1 Student Text: I noticed the silver ball is harder than the blue spoon. I felt the spoon bend. The silver ball did not bend or squish. The silver ball staed the same shape. The spoon broke when I bent the spoon. *This format could be used with students to describe many properties of matter such as size or texture, 11 Detroit Public Schools Physical Properties Office of Science Grade 1 12 Detroit Public Schools Physical Properties Office of Science Grade 1 13 Detroit Public Schools Physical Properties Office of Science Grade 1 Water and Ice Purpose To explore what happens to water as it goes from solid to liquid and back again; to use observation, measurement, and communication skills to describe change. Context This lesson is the first in a three-part series that addresses a concept that is central to the understanding of the water cycle—that water is able to take many forms but is still water. This series of lessons is designed to prepare students to understand that most substances may exist as solids, liquids, or gases depending on the temperature, pressure, and nature of that substance. This knowledge is critical to understanding that water in our world is constantly cycling as a solid, liquid, or gas. In these lessons, students will observe, measure, and describe water as it changes state. It is important to note that students at this level "...should become familiar with the freezing of water and melting of ice (with no change in weight), the disappearance of wetness into the air, and the appearance of water on cold surfaces. Evaporation and condensation will mean nothing different from disappearance and appearance, perhaps for several years, until students begin to understand that the evaporated water is still present in the form of invisibly small molecules." (Benchmarks for Science Literacy, pp. 66-67.) In this lesson, students explore how water can change from a solid to a liquid and then back to a solid. Planning Ahead Materials: One per group of 3 students: * ice * clear plastic cups * clear plastic container of a different shape or size 14 Detroit Public Schools Physical Properties Office of Science Grade 1 One of each: * ice cube tray * access to a freezer * timer Motivation Begin this lesson by dividing the class into pairs. Assign each student a role: writer or illustrator. Students will exchange roles during the course of the lesson. Distribute an ice cube in a clear plastic cup to each group. Have the illustrator draw a picture of what he/she sees. Have the writer write a sentence or word to describe the properties of the ice cube. Guide students' observations with questions such as the following: 1. 2. 3. 4. 5. What is in the cup? Describe the ice. What does it look like? Feel like? What is the ice made of? How is ice made? Pour the ice into a container of a different shape or size. What does it look like now? Does it look the same or different? Has the shape of the ice changed? Why do you think that is? 6. What will happen if we leave the ice out on the desk/table? Why? How do you know?How long might this take? Development Tell students that they will be asked to observe the ice over time to see what changes take place. Set a timer or note 15-minute intervals on the clock. ( Please note: The appropriate time interval will vary depending on the size of the ice cube, amount of sunlight, temperature in the room, etc. Choose the interval appropriate for your time constraints, number of students, age range. Although the activity could require an hour to fully complete, other activities are being conducted simultaneously.) Ask students to repeat the above recording procedures after each time interval. 15 Detroit Public Schools Physical Properties Office of Science Grade 1 While this activity is taking place, you may wish to read Amazing Water by Melvin Berger, or I am Water by Jean Marzollo. When the ice has completely melted, allow students to draw their final journal entry. You can post the students’ pictures of the ice in a line on the wall, so that students will have a visual representation of the change that has occurred. Ask students: 1. 2. 3. 4. What happened to the ice? Why? What is in the cup? How is it like the ice? How is it different from the ice? Describe the water. What does it look like? Feel like? Pour the water into a container of a different shape or size. What does it look like now? Does it look the same or different? Has the shape of the water changed? Why do you think that is? 5. Did the ice change its shape when you poured it into this container? Why or why not? 6. Can you think of something else that we can pour in that will take the shape of the container? 7. Return the water to the glass. Is there any way that we could change this water back to ice? How? How long might this take? Have students place one or more of the cups of water in a freezer. If possible, repeat the procedure used above to observe change in the melting ice. Allow students to check on the water at regular intervals of your choice. When the water has frozen and the final illustration has been made, you can place a finished series of drawings up on the wall, in sequence, so that students can see the change in water temperature. If time or access to a freezer does not allow for this put cups of water in a freezer at different intervals ahead of time and allow students to make observations of cups that were in the freezer for 5 min, 15 min, 30 min, etc. Ask students: 1. Change is happening all around us. There are some changes that happen so quickly or slowly that we cannot 16 Detroit Public Schools Physical Properties Office of Science Grade 1 see them. Did the change in the water happen slowly or quickly? 2. How long did it take for the ice to turn into water? Do you think that there is any way to speed up this change? How? If time permits, allow students to share and test their ideas. (Students might suggest and test blow dryer, fan, sunlight, different spots in the room, radiator, salt, stirring it, different container, etc.) 3. Is there any way to slow down this change? (different container, insulator, different location in the room, place in the shade, put a fan on it, etc.) How can we compare the rate of change? (Time it, use ice in a plastic cup as a control.) 4. Can you think of anything else that changes from one form to another? In the kitchen? In the bathtub? How might soap change? In groups or as a class, create a Venn Diagram comparing water in solid form and water in liquid form. How are they alike? How are they different? Assessment Have students answer the questions below in their journal, using words and/or pictures. Allow students to explain their answers verbally. • What happens to the shape of liquid water when it is moved from one container to another? • What happens to the shape of solid water or ice when it is moved from one container to another?. • How can we make water go from water to ice? • How can we make water go from ice to water? • How does the shape change as it changes from solid water or ice to liquid water? 17 Detroit Public Schools Physical Properties Office of Science Grade 1 Investigating Matter, Solid or Liquid: Barthlomew and the Oobleck Background information: This activity is an extension of the children's exposure to states of matter in the Scott Foresman science series for Grade 2. This lesson has a Literacy component. Using the book by Dr. Seuss, "Bartholomew and the Oobleck," the students will be using observing, and communicating during our reading activities. The students will be using Oobleck to observe the characteristics of solids and liquids. Previously they have had opportunity to experiment with liquids and solids to see which sink and which float. They have an understanding of the definitions of liquids and of solids. This current lesson allows for experimenting with a non-Newtonian fluid, (Oobleck). The students will make their own predictions, conclusions on whether Oobleck is a solid or liquid by using focus observations, conducting focus explorations, raise questions, clarify questions and make conclusions about Oobleck. [image right border] Learning Goals 1. Students will understand that solids, liquids are forms of matter. 2. Students will compare and contrast the attributes of Oobleck 3. Students will have concrete experiences with solids, liquids. 4. Students will explore and observe Oobleck. 5. Students will draw their own conclusion about whether Oobleck is a solid or liquid. Context for Use This activity is easily combined with a Literacy or Reading block. It incorporates inquiry process skills in Reading as well as Science. The groups can be by twos for Science and a large group for Reading for observing or small reading groups. This activity can be a two- day lesson or if a Reading First school it can be used in the 120 minute reading block. The students can do the investigation activities on day two or intertwined with Literacy. Grade Level: Primary (K-2) 18 Detroit Public Schools Physical Properties Office of Science Grade 1 Description and Teaching Materials The students by this points should have had the story and reading activities centered on "Bartholomew and the Oobleck" by Dr. Seuss. Materials: "Bartholomew and the Oobleck", Multiple copies. Cup with ice cubes Cup with water Empty cups Pencil and paper for drawing Pan for each pair of students Plastic clear drinking cup for each pair of students Cheerios Legos Inquiry journals Jar with lid Measuring cups and spoons Zip-lock baggies for each student Permanent markers Small white boards or large sheets of construction paper for each pair of students Pennies, dimes, nickels, quarters Buttons String Toothpicks Washers Marbles Cup of water or other liquids Any other objects interesting for the students to observe. Made up Oobleck in advance mixing the following ingredients: • Cornstarch • Water • Green food coloring Safety: Even though Oobleck is not harmful to eat, we never put it in our mouth. When the students are done they will put the Oobleck in a baggy, with their name on it to take it home or throw it in the trash. The students will wash their hands when they are through. 1. Begin the lesson by asking about the prior knowledge on solids and liquids. Who can tell me one of the characteristics of a solid and then a liquid? Allow the students to engage in a conversation about liquids and solids and give examples. Students can write their answers on their white boards. In the story about Bartholomew were there any solids or liquids? Who can tell me something in the story that we learned that we didn't know about liquids or solids? Allow students to communicate openly. 19 Detroit Public Schools Physical Properties Office of Science Grade 1 2. Teacher can write students ideas on the board with examples for liquids and solids. Once the characteristics, attributes, or principals of solids and liquids are listed, discussed then the teacher can ask the students to move to the tables where the solids and liquids will be located. 3. The teacher will have roles for the students a getter, reporter, recorder and a person that returns the items. The getter will bring to the table or desks (pushed together) Cheerios, Legos, Ice, Water. The teacher will demonstrate the molecular difference between solids and liquids. Cheerios work great to demonstrate liquids-they roll around, take the shape of the container and aren't bound to one another. Several Legos stuck together are the perfect solidthey always keep their shape, are hard to the touch and stick together. Water and ice are great to demonstrate the liquid and solid but also the changing of the structure when the ice melts. Allow the students to observe, communicate and draw or journal their findings. Have enough Legos to link a small chain and Cheerios for explorations. After a number of minutes of creative play. 4. Ask the students if they have ever heard of the 4 tests to decide if something is a liquid or a solid. • Push test? - Can you push it? • Pick-up Test-if you pick something up, does it all come up? • Pour test-does it pour out smoothly, or does it just fall out in a clump? • Shape test-does it keep the same shape? Have one of the students get all of the objects for exploration. (Marbles, coins, string, toothpick, spoon, washers, water, etc from off the table) Allow students to sort through and test the objects. What were their findings with each of the objects that they had? Have the person return the objects to the return table. 20 Detroit Public Schools Physical Properties Office of Science Grade 1 5. The teacher will ask the students how could something be a solid and a liquid at the same time? The teacher will ask the students if they would like some Oobleck just like Bartholomew?. Have the other student from each pair come and get a zip lock baggie of Oobleck. Ask students to predict whether they think this is a liquid or a solid. Using the characteristics of push, pick-up, pours, and shape what is Oobleck. 6. Ask students to describe ways in which we can tell solids and liquids apart? Model this procedure for students. Have students do each test after it is modeled by the teacher. Keep the Oobleck inside the baggie for all of the tests except the “pickup” test in order to reduce the mess. Have students draw or write their results in their journal after each test. 7. Liquid: • Assumes the shaped of the container, which it occupies. • Is not easily compressible) little free space between particles) • Flows easily (the particles can move/slide past one another) Solids: • Has a fixed volume and shape (the particles are locked into place) • Is not easily compressible (little free space between particles) • Does not flow easily (particles cannot move/slid past one another) Have students restate these properties out loud. 8. The teacher will move around during this inquiry and observe, communicate and ask direct questions about the activity. The teacher will encourage the students to make observations, communicate and ask questions of their partner about their findings. 9. Teacher will have students draw; write in their journal questions, findings thoughts about Oobleck and things that they discovered during this process. 10. The teacher will ask students to begin to clean up. They may take the Oobleck home in a zip lock baggy, 21 Detroit Public Schools Physical Properties Office of Science Grade 1 properly marked with their name or put the Oobleck on the table for the teacher to discard. The second person may gather all of the objects and return them to the table. The students will then wash their hands. 11. The teacher will have the desks returned to the proper place and have the students write in their journal whether they thought the Oobleck is a solid or liquid and their reasoning why. The teacher will also reinforce that there is no right or wrong answer. Teaching Notes and Tips It would be very helpful to make Oobleck ahead of time and play with it for yourself. You will then know how it reacts to different forces. Also use different objects to discover what would be more useful. This is a perfect lesson for cross-curricula. This lesson affords you an opportunity to be creative in both Reading and in Science. The more organized with preparations and your thought processes in your objectives and goals the better it becomes. Assessment No formal assessment. The assessment is based on the children's contributions to the discussion, their ability to work in groups and pairs, and their personal journal entries about this activity. Standards National Science standards Grade K-4, Science as Inquiry/Abilities necessary to do scientific inquiry/plan and conduct a simple investigation. Grade K-4/ Physical Science Properties of objects and materials/ Materials can exist in different states-solid, liquid, and gas. Heating or cooling can change some common materials, such as water from one state to another. Adapted from lesson found at http://serc.carleton.edu/sp/mnstep/activities/26393.html 22 Detroit Public Schools Physical Properties Office of Science Grade 1 23 Detroit Public Schools Physical Properties Office of Science Grade 1 24 Detroit Public Schools Physical Properties Office of Science Grade 1 25 Detroit Public Schools Physical Properties Office of Science Grade 1 26 Detroit Public Schools Physical Properties Office of Science Grade 1 27 Detroit Public Schools Physical Properties Office of Science Grade 1 28 Detroit Public Schools Physical Properties Office of Science Grade 1 29 Detroit Public Schools Physical Properties Office of Science Grade 1 30 Detroit Public Schools Physical Properties Office of Science Grade 1 31 Detroit Public Schools Physical Properties Office of Science Grade 1 32 Detroit Public Schools Physical Properties Office of Science Grade 1 33 Detroit Public Schools Physical Properties Office of Science Grade 1 34 Detroit Public Schools Physical Properties Office of Science Grade 1 35 Detroit Public Schools Physical Properties Office of Science Grade 1 36 Detroit Public Schools Physical Properties Office of Science Grade 1 37 Detroit Public Schools Physical Properties Office of Science Grade 1 38 Detroit Public Schools Physical Properties Office of Science Grade 1 39 Detroit Public Schools Physical Properties Office of Science Grade 1 Finding North and South on Magnets Subject - Science Grade Level - 1st - 2nd Magnets: "North and South Poles" Materials: 1. 36 doughnut shaped magnets 2. 36 red and 36 blue dot stickers 3. 12 new pencils 4. various shaped magnets Preparation: 1. Apply the red and blue dots to the 36 doughnut shaped magnets, making sure that all the south poles are one color and the north another Procedure: 1. Group the children into 4’s. 2. Provide each group of children with one pencil and 4 doughnut shaped magnets 3. Ask the children to place the magnets on the pencil in such a way that the magnets are not touching each other, they are not touching the magnets and nothing else is touching the magnets (besides the pencil). Ask them to raise their hands when their group has finished. When a group has finished, ask that group some questions. a.) Why does this happen? b.) Will it happen off the pencil? 4. Allow for as much time as needed until every group is done (up to 10-15 minutes, then stop regardless). Ask the groups to share what they have learned. 5. How did your group arrange the magnets so that they would repel away from each other. You can refer to the colored dots on the magnet if it is helpful. 40 Detroit Public Schools Physical Properties Office of Science Grade 1 6. Explain that sometimes magnets attract, or come together and sometimes they repel, or push apart. What are your magnets doing now? What are they doing when you place them onto another magnetic metal? 7. Please make your magnets attract to each other. Please make your magnets repel from each other. 8. Explain that every magnet has two parts, a north pole and a south pole. Lets say that the blue side is the north and the south part is red (draw on board). What happens when we put the north side against the south side? (Let them try this at their desks) North side against north side? South side against south side? What does this mean? (opposites attract, listen to all other comments.) 9. Supply each group with various shaped magnets. 10. Ask each group to make the magnets repel and attract from each other. Also ask if they can identify the north and south poles. Allow 10 minutes of exploration time. 11. Ask each group to pick one magnet and to demonstrate which side is the north and which side is the south. Ask the question, "Do any of you hang your school work on the refrigerator?" "What do you use to do this?" "If your refrigerator was a blue dot or was the north end of the magnet, what side of the other magnet would face the refrigerator? "How do you know?" 12. To conclude the lesson, ask them to get out their journals and to write down what they have learned. Adapted from www.lessonplanspage.com/ScienceMathMDMagnetNorthSouthPoles12.htm 41 Detroit Public Schools Physical Properties Office of Science Grade 1 42 Detroit Public Schools Physical Properties Office of Science Grade 1 43