Third Grade Goal Four Human Body Writers: Debra Hall Danielle McCaslin -1- I: Grade Level Three /Unit Number: One II: Unit Title: The Human Body III: Unit Length: Nine Weeks IV: Competency Goal Three: The learner will conduct investigations and use appropriate technology to build an understanding of the form and function of the skeletal and muscle systems of the human body. V: Objectives Included: Unit Title: The Human Body Number of Weeks: 9 Number Competency or Objective RBT Tag 4.01 Identify the skeleton as a system of the human A1 body. 4.02 Describe several functions of bones: support, A4, protection, locomotion B4 4.03 4.04 4.05 Describe the functions of different types of joints: hinge, ball and socket, gliding Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices. A2 Observe and describe how muscles cause the body to move. A2 A4, B4 VI: ELD/ED: English Language Learners communicate information, ideas, and concepts necessary for academic success in the content area of science. VII: Vocabulary: skeleton, support, protect, muscles, bones, cartilage, cells, tissue, marrow, calcium, pellet, minerals, movable joints, immovable joints, gliding joints, ball and socket joints, hinge joints, flexibility, backbone, vertebrae, spinal column, opposable, strength, articulated, tendon, cardiac muscles, skeletal muscles, smooth muscles, heart, contract, -2- relax, vein, artery, involuntary muscle, voluntary muscle, stimulus, response VIII: Materials Needed: See Appendix IX: Big Ideas: Content Standard A: Science as Inquiry Abilities necessary to do scientific inquiry Understanding about scientific inquiry Content Standard B: Physical Science Position and motion of objects Content Standard C: Life Science The characteristics of organisms Organisms and environments Content Standard F: Science in Personal and Social Perspectives Personal health X: Unit Notes: Notes to Teacher: A book is a great lead in for a lesson. All experiments need to be set up ahead of time. All examples need to be tried by the teacher before doing it with the students. Some examples of a finished product need to be put together ahead of time. Materials can be modified and changed as necessary. Be sure you have all rules in place before an experiment begins. This unit is designed to be interactive and fun. LEP Modification: Reading materials that students will read pertinent to the unit should be selected with students’ reading levels in mind. It is usually possible to select materials which will support the lesson, but at a lower level so that the LEP student can comprehend the content material. Unit Overview: -3- Unit Overview: The human body unit gives students an opportunity to observe and investigate the form and functions of our skeletal and muscular systems. The students will get hands on experience through identifying different bones, joints and muscles using diagrams and charts and then locating each on their own body. They will explore how the skeletal system provides support, protection, and locomotion with assistance from the muscular system. The students will build models and acquire the vocabulary by focusing on a particular area of the body. Throughout the investigations the students will use scientific process skills to observe, communicate, predict, classify, measure, and infer information about the skeletal and muscular systems. Resources and Children’s Books: Bones! All Kinds of Hands, All Kinds of Feet by Rosanna Hansen Me and My Amazing Body by Joan Sweeney Muscles by Seymour Simon Outside and Inside You by Sandra Markle The Search for the Missing Bones by Eva Moore Skeletons! Skeletons! All About Bones by Katy Hall The Magic School Bus Inside the Human Body by Joanna Cole Head to Toe Science by Jim Wiese http://www.kathimitchell.com/skelsys.html http://www.enchantedlearning.com/subjects/anatomy/skeleton/ http://www.medtropolis.com/VBody.asp www.kidwings.com *Check with your media specialist or the local library for additional books on the human body to be used as additional supplemental materials. -4- X: Global Content: NC SCS Grade 4.03, 4.04 All Objectives 4.05 4.05 4.05 4.03, 4.03 All Objectives All Objectives All Objectives All Objectives All Objectives 4.03, 4.04 4.01 4.02, 4.04 All Objectives All Objectives All Objectives 21st Century Skills Communication Skills Conveying thought or opinions effectively When presenting information, distinguishing between relevant and irrelevant information Explaining a concept to others Interviewing others or being interviewed Computer Knowledge Using word-processing and database programs Developing visual aides for presentations Using a computer for communication Learning new software programs Employability Skills Assuming responsibility for own learning Persisting until job is completed Working independently Developing career interest/goals Responding to criticism or questions Information-retrieval Skills Searching for information via the computer Searching for print information Searching for information using community members Language Skills - Reading Following written directions Identifying cause and effect relationships Summarizing main points after -5- Activity Lessons 8, 9 All Lessons Lesson 11 Lesson 11 Lesson 10 Lesson 3 All Lessons All Lessons All Lessons All Lessons All Lessons Lesson 3 Lesson 2 Lesson 7 All Lessons All Lessons All Lessons All Objectives All Objectives All Objectives All Objectives All Objectives All Objectives 4.05 All Objectives All Objectives All Objectives All Objectives All Objectives 4.05 4.03, 4.04, 4.05 reading Locating and choosing appropriate reference materials Reading for personal learning Language Skill - Writing Using language accurately Organizing and relating ideas when writing Proofing and Editing Synthesizing information from several sources Documenting sources Developing an outline Writing to persuade or justify a position Creating memos, letters, other forms of correspondence Teamwork Taking initiative Working on a team Thinking/Problem-Solving Skills Identifying key problems or questions Evaluating results Developing strategies to address problems Developing an action plan or timeline -6- All Lessons All Lessons All Lessons All Lessons All Lessons All Lessons Lesson 13 All Lessons All Lessons All Lessons All Lessons All Lessons Lesson 13 Lessons 8, 9, 10, 14 Lessons and Objectives: Lesson One: I Like to Move It Lesson Two: Dem Bones Lesson Three: Owl Pellets Lesson Four: Hard Bones Lesson Five: Soft Bones Lesson Six: Gliding, Ball and Socket, Hinge, Oh My! Lesson Seven: Back Breaker Lesson Eight: The Amazing Opposable Thumb Lesson Nine: More Joint Tasks Lesson Ten: Putting It All Together Lesson Eleven: Heart Smart Lesson Twelve: Can We Control It? Lesson Thirteen: Taking Care of Muscles Lesson Fourteen: How Fast Are You? -7- 4.01, 4.05 4.01 4.03, 4.04 4.02 4.02 4.03, 4,04 4.02, 4.04 4.03, 4.04 4.03, 4.04 4.05 4.05 4.05 4.05 4.05 Lesson One: I Like to Move It Objectives: 4.01 Identify the skeleton as a system of the human body 4.05 Observe and describe how muscles cause the body to move LEP Objectives: Students will write a minimum of three sentences to tell how the body moves during different physical activities. A word bank/list or working with a partner would be helpful for LEP students. Essential Question: How does the body move? Time: one 30-minute period Content Blast: The skeleton is a system of the human body. It is the framework that supports and protects the body. It also works with our muscles to move our body. We have 206 bones in the adult skeleton. LEP Modification: It would be helpful to read Building a House by Byron Burton to the LEP students to draw the analogy of the frame and systems of home construction to those of the human body. Another suggestion is to use a 3-D skeleton model or replica, if your school has one, to build skeleton background knowledge. Materials: Per Student Pair: one jump rope Per Class: chart paper Process Skills: Observe, Communicate, Infer, Predict Engage: Demonstrate several ways to appropriately jump rope. -8- Explore: Students will work in pairs to observe each other jumping rope. One student records his or her observations in their science notebook while the other jumps rope. Students will then change places and repeat. Explain: Have a class discussion on what the students observed while they were jumping. Create a class chart listing all of the ways that the body moved in order to successfully jump rope. Ask the students what was allowing their bodies to move in those ways. Lead them to the discovery of bones and muscles working together to allow those movements. Elaborate: Have the students act out other various scenarios where they need to move their bodies. (i.e. swimming, climbing, hiking, etc.) Compare these activities to the jumping rope activity. Ask if their bodies move in the same way. Evaluate: Have the students write a reflective paragraph in their science notebooks about the ways that the body moves in order to complete various activities. They should include the reasons that their bodies are able to move in these ways. -9- Lesson Two: Dem Bones Objectives: 4.01 Identify the skeleton as a system of the human body LEP Objectives: Students can tell that the skeletal system is one of many systems in the human body. Students can list the four main parts of the skeleton, but will need support for correct spelling. Essential Questions: How many bones are in the human body? Time: two 45-minute periods Content Blast: See Lesson One Materials: Per Student Group: diagram/poster of human skeleton sections (torso, arms/hands, legs/feet, skull) See examples in lesson. Per Class: overhead/chart of class data table Process Skills: Observe, Communicate, Predict, Measure, Classify Engage: Refer to Lesson One. Ask the students to recall how the body moved. Ask the following questions: Do your bones move when you jump? Where are your bones? How can you tell where your bones are? Have students feel for the bones inside their bodies. Ask if they can feel all of the bones in their bodies. Explain to the students that they will conduct an investigation that will help them to determine how many bones make up their skeleton. Have students predict how many bones total they believe are in the human skeleton based on what they have felt in their bodies. - 10 - Explore: Day One: Divide the class into four groups. Provide each group with diagrams of two human skeleton sections. For example, one group may receive the skull and torso, another group will get the legs and arms, etc. Students should use the diagrams to count the number of bones in that section of the skeleton and record their conclusions in a data table like the ones below. Skull Bones Face Bones Arm Bones Torso Bones Upper Arm Cranium Bones Leg Bones Shoulder Bones Upper Leg Breast Bones Lower Leg Jaw Bones Lower Arm Rib Bones Ankle Other Bones Wrist Back Bones Foot Inside Head Hand Pelvic Bones Subtotal Total Subtotal Total Total _____x 2 Total - 11 - _____x 2 Day Two: Begin by asking the students if there was anything that surprised them from the previous day. Explain to them that they are going to compile their data onto a class data table in order to draw conclusions about the total number of bones in the body. Provide them with a data table that they can record their group results. Class Data Table Skeletal Sections Group Totals Average Arm Leg Torso Skull Grand Total Explain: Once the totals have been recorded discuss the varying answers for each group. Ask them if it is possible that some bones were missed. After this discussion explain how averaging can help determine a more accurate count for each section. Average the results for each section and then total all of the averages together in order to obtain a skeletal grand total. Tell students that the correct number of bones in your body is 206. Discuss why their grand total may be different. Elaborate: Ask students the following questions: How will we know if we missed any bones when we counted? What could we use to help us find out more about bones? Discuss other ways of counting bones such as books, x-rays, or a model skeleton. Students could choose to use other resources to see if they can get a more accurate total. Evaluate: Students should be able to identify that there are four main skeletal sections in the body and that each one is made up of many bones. - 12 - Lesson Three: Owl Pellets Objectives: 4.03 Describe the functions of different types of joints Hinge Ball and Socket Gliding 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices LEP Objectives: Students will be able to complete a Venn diagram comparing and contrasting rodent bones and human bones with assistance. Essential Question: What is an owl pellet? Time: two 45-minute periods Content Blast: Owls are raptors that swallow their prey in pieces and are unable to digest the fur, bones, scales, and teeth. After an owl eats, a pellet forms in the stomach as the soft materials separate from the hard materials. The owl then coughs up or regurgitates a pellet containing bones. Materials: Per Student Pair: owl pellet (these can be purchased at a science supply store) toothpicks hand lens rodent bone identification sheet (these can be found online) envelope human skeleton diagram Process Skills: Observe, Communicate, Predict, Infer, Measure, Classify *A virtual owl pellet dissection activity is available at www.kidwings.com. Engage: Read a book about owls. Discuss the things that owls eat. - 13 - Explore: Day One: Divide the students into pairs and give each pair an owl pellet, toothpick, and hand lens. Have them examine the pellet and discuss what they think it is. Students should draw the pellet and record qualitative and quantitative observations in their science notebooks. Students will then split open the owl pellet and classify the parts they find. Teacher should circulate and discuss the findings with each group. Students should again record observations into their science notebooks. Once each group has recognized that the pellet contains bones, a whole class discussion should ensue about the contents of an owl pellet. Students should save the bones and teeth for Day Two of the lesson by placing them into an envelope. The fur may be discarded at this time. Day Two: The teacher will review owl pellets and discuss the group findings. Hand out a rodent bone identification sheet. Return each pair’s envelope containing the bones collected on the previous day. Allow students time to identify the names of the bones that they found in the pellet. Ask students to determine if there are bones from more than one animal. Instruct students to lay bones out and attempt to form a complete skeleton. Explain: Ask students the following questions throughout the lesson: What skeletons were found? What bones did you identify? Were there extra bones (i.e. two skulls) and what does this tell you about the animal’s diet? Can you tell the function of a bone by its structure? How are these bones similar to humans? Elaborate: Students can complete this activity with another bird of prey’s pellets and compare the findings to the owl pellets. Another option would be to use owl pellets from another region of the country and compare those findings. Have students create Venn diagrams detailing the similarities and differences among various pellets. - 14 - Evaluate: Give students a diagram of a human skeleton and have them complete a Venn diagram comparing rodent bones and human bones. LEP Modifications: Students, especially Intermediate level students, should do this activity with a partner. - 15 - Lesson Four: Hard Bones Objective: 4.02 Describe several functions of bones: Support Protection Locomotion LEP Objectives: Students can tell that bones give the body shape; help it move; and keep the important organs safe. Students can list ways to keep bones strong. Essential Question: What makes your bones strong? Time: one 45-minute period Content Blast: Most children think of bones as hard, dry, white parts of the body. The bones are hard, but they are definitely not dry. Bones are alive and are made of a mix of hard materials and living cells. The hard part of the bone is made mostly of calcium and phosphorous. These minerals give bones their strength. Inside bones is a soft tissue known as marrow. Cartilage is a flexible tissue that covers the ends of some bones. It helps to protect bones from grinding against one another. The inside of a bone do not add strength to the bone, but it does make new blood cells and produces germfighting white blood cells. Materials: Per Student Group: two toilet paper rolls heavy books overhead, poster, or diagram of inside of a bone Process Skills: Observe, Communicate, Predict, Classify, Infer Engage: Review the names of some of the bones from the previous lesson. Point to various bones and say its name. Examples are skull, ribs, jaw, collarbone, etc. Ask the students how strong they think bones are. Pose questions such as “Are bones stronger than your pencil, stronger than a ruler, - 16 - stronger than a piece of chalk, stronger than a piece of wood, etc.” These questions will give students a base to form their own comparisons. Explore: This activity will give students an idea of bone strength. Using a toilet paper roll, place the roll on the table so that it stands on its end. Tell students the toilet paper roll represents the bone. Tell students we are going to place a book on top of the roll. Have students predict what will happen to the roll when a book is placed on top of it. Will the roll be able to hold it or will the roll be bent or broken? Place the book on top of the roll. It should easily support the book. Explain: Tell students that bones are not solid, but are hollow like the toilet paper roll. As we saw, a hollow tube is as strong as a solid and is able to support a lot of weight. As bones grow, calcium and phosphorous are put into the cartilage. They become strong and are able to support and protect our body. Discuss with students ways to keep your bones strong through a healthy diet and exercise. Elaborate: Set a second book on top of the toilet paper roll. Once again it should easily support the weight. Have students make another prediction about how many books the toilet paper roll will hold before it bends or breaks. Discuss with students why your bones need to be strong. Evaluate: In science notebooks have students write at least two ways to keep their bones strong. - 17 - Lesson Five: Soft Bones Objectives: 4.02 Describe several functions of bones: Support Protection Locomotion LEP Objectives: Students can tell that bones give the body shape; help it move; and keep the important organs safe. Students can list reasons why bones would be harmed or remain healthy. Essential Question: What makes our bones unhealthy? Time: one 30-minute lesson, 15-minute follow-up seven days later Content Blast: Minerals cause bones to be strong. When the minerals are removed, bones become soft and pliable. Materials: Per Student Group: one uncooked chicken bone such as a wing or wish bone (thoroughly cleaned and washed in hot water) jar with a lid vinegar Process Skills: Observe, Communicate, Predict, Infer Preparation: The chicken bones should be cleaned and allowed to dry overnight prior to completing this lesson. Engage: Read a book about ways to keep your bones strong. (Refer to resources list.) Explore: Give each student group a chicken bone. Ask them to record observations in their science notebook about the bone’s color, size, shape, texture, and - 18 - strength. Ask students to predict what would happen if they left the bone in a jar that is covered with vinegar for seven days. Record these predictions in their science notebooks. After seven days, remove the bone and rinse with water. Have students test flexibility of the bone by bending it. Observe and record the bone’s color, size, shape, texture, and strength in their data table. Color Size Shape Texture Strength Day 1 (Before soaking) Day 8 (After soaking) Explain: Tell students that the minerals were removed from the bone by the vinegar. Have them discuss which parts of the bone became soft first and have them predict what would happen if they were to allow the bone to remain in the vinegar even longer. Discuss ways to ensure that minerals do not leave their bones. This discussion should include eating a healthy diet and exercising regularly. Elaborate: Have students place the bones back into the vinegar for another week. Observe the changes that occur. Evaluate: Students should be able to identify the changes in bones when the minerals were removed. Have them create a T-Chart identify factors that keep bones healthy and factors that harm our bones. - 19 - What keeps our bones healthy? What harms our bones? LEP Modification: Students, especially Intermediate level students, should do this activity with a partner. - 20 - Lesson Six: Gliding, Ball and Socket, Hinge, Oh My! Objective: 4.03 Describe the functions of different types of joints: Hinge Ball and socket Gliding 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices LEP Objectives: Students will be able to name the three types of joints, and show an example of each in the body. Essential Question: What are the different types of joints? Time: one 60-minute period Content Blast: Joints are needed to provide flexible connections between bones. There are two categories of joints; immovable joints and movable joints. Immovable joints are places where bones fit together too tightly to move. They are mostly found in the skull. Movable joints are places where bones can move easily. These types of joints are gliding joints, ball-and-socket joints, and hinge joints. Gliding joints allow some movement in all directions and can be found in the hand and wrist. Ball-and-socket joints allow bones to move back and forth, in a circle, and side to side. Hinge joints allow bones to move back and forth in one direction. Materials: Per Student: one labeled index card with an example of a joint and/or a type of joint diagram of human skeleton Per Class: hinge measuring spoon lollipop - 21 - Process Skills: Observe, Communicate, Predict, Infer, Classify Engage: Ask students if they can bend their bones in any place. If students say “yes” ask them to bend their arm in any place other than their elbow or wrists. Students should not be able to bend their arm except at their elbow or wrist. Explain to students our body has joints. Joints are where bones fit together. There are two main categories of joints, immovable joints and movable joints. Have students try to define immovable and movable. Ask students to try to move their skull. They might look confused, but hopefully, they will quickly see their skull is a type of immovable joint. The bones fit together too tightly to move. Ask students to bend their knee, bend their elbow, move their hand up and down, and move their arm around. Tell students these are movable joints because the bones can move easily. Explore: Discuss with students that there are three main types of movable joints. Have students bend their knee. Explain this is a hinge joint. A hinge joint is like a door hinge that allows a door to open and close. Show students an actual hinge from a door. Have students discuss how the hinge is similar to the movement of the knee. Other examples of hinge joints are elbows and bending your fingers at the knuckle. Next, have students move their arm in a circular motion. Explain to students this is a ball-and-socket joint. The ball of one bone fits into the socket, or cup, of another bone. Use a measuring spoon (socket) and a lollipop (bone) to show how ball and socket joints work by placing the lollipop inside the spoon and moving it around. This joint allows bones to move back and forth, in circle, and side to side. Another example of a ball and socket joint is your hip. Have students move their wrists and ankles. Explain that these bones can slide against one another. This joint allows some movement in all directions. Explain: Ask the students the following questions: What do you call the place where two bones come together? What are the three types of joints? How do your joints help you move? What would happen if you didn’t have your joints? - 22 - LEP Modifications: It would be very helpful to the LEP students to use an actual skeleton model or replica, if you have one in your school. There are smaller models available in some of the teacher supply stores for a very reasonable price. Tactile learning is very helpful for these students. Elaborate: Give one group of students index cards labeled with the different types of joints just discussed. For example: hinge- a joint that moves back & forth. Have that group of students stand in different areas of the classroom. Give the remaining students names of body parts we have studied. For example knee, elbow, wrist, etc. The students that have cards with names of body parts will then classify themselves corresponding to the correct joint. Students should discuss with their group if the match is correct. For example, a shoulder should not be able to stand with the hinge joint. Evaluate: Give students a diagram of the human skeleton. Have students color code the three types of movable joints on the diagram as follows: Hinge – Red Ball and Socket – Green Gliding – Blue Be sure that students are coloring the points where the bones meet rather than coloring in the bones. LEP Modification: To assure that the students understand and complete this assessment correctly, they should work with a partner, especially LEP students who are Intermediate level. - 23 - Lesson Seven: Back Breaker Objectives: 4.02 Describe several functions of bones: Support Protection Locomotion 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices. LEP Objectives: Students will be able to re-create the activity with the pipe cleaners and straws to show understanding of the lesson’s activity. Essential Question: How does the spine aid in the body’s ability to move? Time: one 45-minute period Content Blast: By having many small bones, instead of, fewer large ones, the spine has increased flexibility. There are 26 bones that make up the backbone. These bones can be called vertebrae. Inside the backbone is the spinal column. Each bone or vertebrae is separated by cartilage. The cartilage assists in movement and absorbs shock when necessary. Materials: Per Class: human skeleton diagram or poster Per Group: three pipe cleaners three plastic straws scissors Process Skills: Observe, Communicate, Predict, Measure, Classify, Infer - 24 - Engage: Refer to a skeleton diagram or poster. Point to the back and have students recall this bone is called the spine. Ask students to predict if they think the spine is made up of one large bone or several small bones. Explore: Pass out materials to each group. Have students place one pipe cleaner inside one straw. Tell students the straw represents the backbone and the pipe cleaner is what is found inside the backbone. Ask students if they can bend the straw without creasing it. After several attempts, students should find that they are unsuccessful at this task. Next, have the students take the another straw and cut it in half and once again put one piece of pipe cleaner through the two pieces of straw. Students can now bend the straw, but this represents if the spine could only bend at a ninety degree angle. Now, take the final straw and cut it into five pieces and thread the last piper cleaner through the five pieces. Have students bend this last straw and compare it to how well the other two were able to bend. Explain: Students should conclude that the last straw is most like the body’s backbone. Explain that the spine has many small bones divided by discs made up of cartilage. This cartilage is what allows the backbone to move so easily. If the spine had one large bone, it would be like the first straw and we would not have any mobility. If the spine was like the second straw, we would have limited mobility. Elaborate: Students could use another straw and create 26 “discs” in order to visualize what the 26 bones in the backbone look like. Evaluate: Have students write in their science notebooks about the activity. Have students explain why the spine needs to be made of several small bones rather than one large bone. Have a word list for students to refer to while writing in their science notebooks. LEP Modifications: The word list is a great idea for LEP students, and they may also need the support of working with a partner to complete the evaluation. Modify the length of the explanation and the entry for the Science notebooks for LEP students. - 25 - Lesson Eight: The Amazing Opposable Thumb Objectives: 4.03 Describe the functions of different types of joints Hinge Ball and socket Gliding 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices LEP Objectives: Students will be able to describe actions that they were able to do in this activity and write about the importance of the human thumb. Essential Question: How important are thumbs for doing everyday tasks? Time: one 60-minute period Content Blast: One of the most important joints is the thumb. Humans have an opposable thumb. We can touch our thumb to the tips of our four other fingers. The strength of our grip is also unique. These two features make our thumbs “thumbs up”. Materials: Per Class: several rolls of masking tape Per Student: data table with tasks to complete blocks paper clips pencil sharpener pencil shoe with laces book paper - 26 - Process Skills: Observe, Communicate, Predict, Classify Engage: Have students try to pick up their pencil without using their thumb. Discuss strategies and obstacles for completing this task. Was it difficult or easy to complete? Explore: Inform students that they will be performing a series of tasks without the use of their thumbs. Demonstrate how to tape a student’s thumb to their index finger by wrapping masking tape around until the thumb is secured against the index finger as shown in the picture below. Choose student helpers to assist in getting all of the student’s thumbs taped. Both hands should be taped. Once all of the students are taped up distribute the data table below with the assigned tasks. Action Easy Tie your shoe. Open a door. Draw a picture. Snap your fingers. Turn a page in a book. Stack a pile of blocks. Link paper clips together. Write your name. Roll up a piece of paper. Sharpen a pencil. Choose additional tasks. - 27 - Difficult Very Difficult Explain: Ask students the following questions: Which tasks were difficult and why? What did you do to overcome these obstacles? What are the advantages of an opposable thumb? Elaborate: Have students continue attempting tasks without their thumbs at home. Tell them to try to complete their normal evening routines without the use of their thumbs. Evaluate: Students should write a reflective paragraph on what it was like to live without thumbs. They should include the importance of the thumb when completing everyday tasks. LEP: It may be difficult for an LEP Novice or Intermediate level student to write a reflective paragraph. An appropriate evaluation for these students might be to orally share with a partner to help them complete the evaluation. - 28 - Lesson Nine: More Joint Tasks Objectives: 4.03 Describe the functions of different types of joints Hinge Ball and socket Gliding 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices LEP Objective: LEP Objectives: Students will be able to describe actions that they were able to do in this activity and write about the importance of joints. Essential Question: How are hand joints important? Time: one 60-minute period Content Blast: See Lesson Six Content Blast. Human hands are articulated, which means jointed or joined in sections. Materials: Per Class: several rolls of masking tape Per Student: data table with tasks to complete blocks paper clips pencil sharpener pencil shoe with laces book paper ruler Process Skills: Observe, Communicate, Classify, Predict, Infer - 29 - Engage: Review Lesson Eight and discuss obstacles that occurred when completing tasks without the use of the thumb. Ask students if there are other joints in the hand that are essential for everyday task completion. Explore: Discuss with students that human hands are articulated; meaning jointed or joined in sections. Tell students that we will be immobilizing the joints in the hand and attempting the same tasks that they completed in Lesson Eight. Demonstrate how to tape a ruler to the index and middle finger of a student’s dominant hand. Place the ruler on the back of a student’s hand. Use masking tape to attach the ruler at the middle and index fingers like the picture below. The ruler should also be secured around the wrist as shown below. Once the students have been taped, pass out the data table with the assigned tasks. Allow students time to attempt to complete the tasks listed on the data table. Action Easy Tie your shoe Open a door Draw a picture Snap your fingers Turn a page in a book Stack a pile of blocks Link paper clips together Write your name Roll up a piece of paper Sharpen a pencil Choose additional tasks - 30 - Difficult Very Difficult Explain: Ask students the following questions: Which tasks were difficult and why? What did you do to overcome these obstacles? What are the advantages of having an articulated hand? Elaborate: Have students create a Venn diagram comparing the completion of the tasks without their thumbs to the completion of the task without their hand joints. Evaluate: Students should write a reflective paragraph on what it was like to complete tasks without hand joints. They should include the importance of the articulated hand when completing everyday tasks. LEP: It may be difficult for an LEP Novice or Intermediate level student to write a reflective paragraph. An appropriate evaluation for these students might be to orally share with a partner to help them complete the evaluation. - 31 - Lesson Ten: Putting It All Together Objectives: 4.05 Observe and describe how muscles cause the body to move. LEP Objectives: Essential Question: How do muscles move bones? Time: two 60-minute periods Content Blast: Bones cannot move by themselves. They need muscles in order to move. Muscles called skeletal muscles are attached to a bone and allow movement. These muscles pull bones to move them. A strong band of tissue called a tendon connects a muscle to a bone. Muscles can be damaged. A muscle tear occurs when the fibers of a muscle are separated by a sudden force or stretching. The quick start of runners who run short dashes can result in a tear. A muscle strain occurs when muscles that have not been exercised for several weeks are overused. Materials: Per Student Pair: two bendable straws one rubber band two paper clips scissors pushpin (optional) Process Skills: Observe, Communicate, Predict, Infer Engage: Have students put one hand, palm up, against the under side of their desk and push upward. With their other hand, have them feel the front and back of their upper arm. Discuss with students what they think is happening. This will give you their prior knowledge about muscles. - 32 - Explore: Discuss with students the parts of the arm that are causing it to move. Tell them that the bones cannot move alone, they need a muscle to help them. Tell students that they will be creating a model of the bicep muscle in the arm to help them better understand how that muscle helps them move their arm. Pass out materials to each student group. Procedure: First, students will cut the bendable part off of one straw. They will then insert the cut straw into the bendable end of the other straw. The point where the straw bends represents the hinge joint in the arm. Students should then poke one paper clip into Point A of the straw structure as shown in the figures below. (If students have difficulty poking the paper clips through the straws, a pushpin may be used to poke a hole first.) Students will then poke the second paper clip into Point B of the straw structure as shown in the figures below. These paper clips represent the tendons that attach the muscles to the bones. Once the paper clips have been properly attached, the students will hook the rubber band onto each of the paper clips as show in the diagram below. This represents the bicep muscle. - 33 - Point B Point A Once the students have created their model, they should be able to pull the rubber band to simulate bicep muscle contraction. LEP Modifications: LEP students should be paired with another student to complete this activity so that they can fully understand the directions and complete the activity successfully. Explain: Tell students that the muscles that are attached to and move the bones are called skeletal muscles. These muscles are attached to bones by a tough cord called a tendon. Skeletal muscles pull bones to move them. Muscles do not push bones. The names of the muscles in the upper arm are the biceps and triceps. Have students flex their arm. Feel the top of the arm. This is called the bicep. Have students discuss how this is similar to what they saw happen with their arm model. Now straighten your arm. The muscle on the other side of the upper arm, the tricep contracts, and your arm straightens. Elaborate: Students can draw conclusions about how other skeletal muscles work to move other bones. Have students formulate a plan in order to construct a model of either a hand or leg, using similar materials from the arm model. This could be done on a separate day. LEP Modifications: Students will need the support of a partner and words written on chart paper or the white board if this activity will be repeated on a separate day. - 34 - Evaluate: Students will retell what helps the bones move. Have them hold a book in one hand and hold that arm straight out in front of them. Have them put their other hand on the bicep of that upper arm. Discuss how the muscle feels, and then have students lift their books up toward their shoulders. What happens? The muscle shortens and bunches up. - 35 - Lesson Eleven: Heart Smart Objectives: 4.05 Observe and describe how muscles cause the body to move. LEP Objectives: Students will be able to: name the heart muscle and the two actions that make a heart a muscle. trace the path of blood through the body Essential Question: What are the functions of the heart? Time: two 30-minute periods Content Blast: There are three types of muscles-skeletal muscle, cardiac muscle, and smooth muscle. We have already discussed skeletal muscles in previous lesson. The next muscles, cardiac muscles, are found in only one place in the body - the heart. The heart is a hollow organ made up of four parts, or chambers. The walls of the heart are made of strong cardiac muscle. When your cardiac muscle contracts, it squeezes blood out of your heart. When your cardiac muscle relaxes, your heart fills with more blood. Materials: Per Student Group: timer or watch with a second hand Per Class: diagram of the heart stethoscope (ask your school nurse) Process Skills: Observe, Communicate, Predict, Measure, Classify, Infer Engage: Begin class by wearing the stethoscope. Ask students where they have seen the instrument before, what is its purpose and how is it used. Student’s response may be that it is used to listen to our heart by a doctor. Ask students if any other organs can be heard by the doctor using a - 36 - stethoscope. Students should have some background about the heart. Pose the question to students “Is the heart a muscle?” Explore: Show a diagram of the heart. Students will notice it is much different than what they usually draw to represent a heart. Point out the heart has two sides, right and left, separated by a thick muscular wall. The heart contracts and relaxes, so therefore, students should conclude it is a muscle. When your cardiac muscles contracts, it squeezes blood out of your heart through the arteries. When your cardiac muscle relaxes, the veins fill your heart with more blood. Continue to explore by completing the pulse taking activity. 1. Hold your left hand in front of you with your palm up. 2. Place the first three fingertips of your right hand on the inside of your left wrist in the groove below the base of the thumb. You may need to move your hand around slightly before you can feel the pulse. 3. Use the timer to count the number of times your heart beats in one minute. Record the results. 4. Run in place for about one minute. 5. Repeat steps to take pulse again. 6. Record the results. Discuss the difference. Explain: The heart is a bag of muscle that squeezes itself about once every second, sending blood flowing throughout the body. When you exercise, your muscles need more oxygen. To meet this need, your heart will beat faster to increase blood flow, which supplies the muscles with nutrients and oxygen. The amount of increase in heart rate depends on the type and how long a person exercises. Heavy exercise will cause a greater increase in heart rate than light exercise. LEP Modifications: Students could benefit from a real life connection by watching a video which demonstrates how the heart pumps, or observing the heart action on an interactive website. - 37 - Elaborate: Have students sequence the steps of the blood flow through the heart. They can write or sketch to show the process. Students can imagine they are a drop of blood and describe their trip through the heart, out an artery, and back again through a vein. LEP Modification: Sequencing through illustration is a great way for LEP students to be successful in this activity. If students are expected to write, they will need a word box to help with spelling. Evaluate: Ask students why the heart is a muscle and what type of muscle it is. Students should know it is a muscle because it contracts and relaxes. It is classified as a cardiac muscle. Have students share their responses to how blood circulates through the body. LEP Modification: Novice and Intermediate students will have difficulty verbalizing or writing their responses, and should be permitted to trace the route with their fingers or draw it in for their assessment. - 38 - Lesson Twelve: Can We Control It? Objectives: 4.05 Observe and describe how muscles cause the body to move. LEP Objectives: Students will be able to respond to questions about voluntary and involuntary muscles using verbal or non-verbal communication (e.g. use word card to give answers). Essential Questions: What are voluntary and involuntary muscles? Time: one 45-minute period Content Blast: Muscles can be classified by how they are controlled. Cardiac and smooth muscles are involuntary muscles. Smooth muscle makes up the internal organs. Smooth muscles are not attached to bones. There is smooth muscle in the stomach and intestines. An involuntary muscle causes movements you cannot control. Most skeletal muscles are voluntary muscles. Voluntary muscles cause movements you can control. Some muscles are both voluntary and involuntary. Materials: Per Student: recording sheet book Process Skills: Observe, Communicate, Predict, Measure, Classify, Infer LEP Modifications: The specialized vocabulary in this lesson (frown, goose bumps, stomach growling, sneeze, and intestines) will have to be translated or pre-taught for LEP students to be able to participate in the lesson. - 39 - Engage: Have students to smile, and then make a frown. Tell them it takes 34 muscles to frown, but only 13 muscles to smile. Discuss with students how they made those faces. Discuss whether or not they can control muscles. Explore: Provide students with the following list of tasks. Ask them to determine if they can control these tasks. 1. 2. 3. 4. 5. 6. 7. 8. Stand up Turn a page in their book Sneeze Walk Get goose bumps on their arms Raise a hand Make your blood stop pumping Make your stomach growl Students will quickly realize that some tasks they can do and some they cannot. Discuss the vocabulary words voluntary and involuntary and ask the students to classify the tasks as one or the other in a T-Chart. Explain that tasks you can control use voluntary muscles. Explain that tasks we were not able to do use involuntary muscles. Most skeletal muscles are voluntary muscles which allow us to easily move our bones. Cardiac muscles and smooth muscles are mostly involuntary muscles. - 40 - Voluntary Tasks Involuntary Tasks LEP Modification: To ensure that LEP students have understood the specialized vocabulary, they should complete this activity with a partner. Explain: Ask the students to explain why some actions are voluntary and some are involuntary. The ones the students could do and the ones the students could not do. Ask the students to name other voluntary and involuntary actions and add them to the T-Chart. Elaborate: Think about all the ways you used muscles in the past half-hour. Record the information in the chart. Some examples are given. Add more to the list. Muscles Used in the Last Half Hour Activity Raising Hand Blinking Muscles Used Arm Muscles Eye Muscles - 41 - Voluntary Yes Yes Involuntary No Yes Evaluate: Make sure students understand how movement is classified. Have them respond to the following questions in their science notebooks. How many different ways did you use your muscles? Did you use more voluntary or involuntary muscles? Students may suggest they used more involuntary muscles because they use them constantly. This response is an acceptable conclusion. LEP Modification: For understanding and successful completion of this assessment, LEP students should work with a partner to complete this activity. The LEP student and his/her partner may need more time to finish, and it would be helpful for them to have spelling support. - 42 - Lesson Thirteen: Taking Care of Muscles Objectives: 4.05 Observe and describe how muscles cause the body to move. LEP Objectives: Students will be able to create a poster or public service announcement (PSA) to encourage healthful living by exercising. Essential Questions: What makes your muscles ache or get tired? Time: two 60-minute periods Content Blast: A muscle tear occurs when the fibers of a muscle are separated by a sudden force or stretching. Treatment includes applying wrapped ice and bandaging. Returning to action too soon may tear the fibers again. A muscle strain occurs when muscles that have not been exercised for several weeks are overused. The pain can be relieved by warm baths and usually is gone within 2-3 days. Materials: Per Class: five tennis balls books timers or watches with a second hand Process Skills: Observe, Communicate, Predict, Measure Engage: Ask students what happens when they are outside playing all day long. Do they ever feel tired? What if they were swimming all day long? Does their body ache? Have them predict why they think this happens. Explore: Have student pairs rotate between each of the following centers to experience muscle fatigue. The teacher should demonstrate body positions for each of the activities prior to the students rotating through the centers. Students should record how they felt after completing each - 43 - activity, as well as, the length of time the activity lasted in a data table. Student pairs should alternate activities and keeping time. LEP Modification: Before beginning the centers, make sure that the LEP student knows how to time their partner. In doing the activity, be sure the LEP student’s partner goes first to demonstrate the actions so the LEP student understands what to do when it is his/her turn. Center #1 Have several tennis balls available. One student sits in the chair and lays one forearm flat on the table, palm facing upward. They will hold the tennis ball in the palm of the hand on the table. The other student should time the activity for their partner. The student performing the activity will close their hand around the tennis ball and squeeze as hard as they can, then open their hand. Repeat this action as many times as they can in one minute. Each time, they should open their hand completely so that the ball rests in the palm, then close their hand and squeeze the tennis ball. Rest for 30 seconds, and then repeat the exercise. Do this two more times. Center #2 One student will stand with their back against a wall. They will slide down until in a seated position and hold this position for one minute. The other student will keep time for their partner. Rest for 30 seconds and then repeat twice resting between each trial. Center #3 One student will stand up with both arms held horizontally to their sides palms facing up. They should rest a book on each hand. The student will hold the position for one minute. The other student will keep time for their partner. Rest for 30 seconds and then repeat twice resting between each trial. Center #4 One student will lay flat on their back on the ground. They will raise both of their feet into the air so that they are perpendicular to their body. They should hold this position for one minute. The other student will keep time for their partner. Rest for 30 seconds and then repeat twice resting between each trial. - 44 - Center #5 One student will complete as many sit-ups as possible in one minute. The other student will keep time for their partner. Rest for 30 seconds and then repeat twice resting between each trial. Students should record their information on a chart as they complete each trial. Trial 1 Time Felt Trial 2 Time Felt Trail 3 Time Felt Center #1 Center #2 Center #3 Center #4 Center #5 Explain: Your muscles will begin to get tired after you have continuously performed the same activity. Your performance will slow down because you are tired. When a muscle contracts over and over, it uses oxygen and nutrients. If it is used long enough it will begin to run out of oxygen necessary for the muscle to operate properly. The lack of oxygen will cause the muscle to feel tired and to slow down. Tell students by exercising that their muscles will become stronger, bigger and healthier. List some exercises students do often such as running, biking, soccer, playing on the playground etc. Other ways to keep muscles healthy is by stretching before or after exercising, drink plenty of water, eat healthy foods, and never take illegal drugs. LEP Modificaton: Ensure that the LEP students understand the terms oxygen and nutrients. Have a student demonstrate how to do a stretching exercise. - 45 - Elaborate: Try other repetitive activities to see if the result is the same. Evaluate: Have students write a PSA (public service announcement) for the school that would convince people to take care of the muscles by exercising, stretching before or after exercising, eating/drinking healthy, and never taking illegal drugs. Have students make a “safety poster” to go along with their announcement. LEP Modification: Students, especially Novice and Intermediate level, should do this activity with a partner. Spelling support via a word box on the whiteboard or chart paper would be very helpful. - 46 - Lesson Fourteen: How Fast Are You? Objective: 4.05 Observe and describe how muscles cause the body to move LEP Objective: Students will be able to write a short reflection of the muscular response time. Essential Question: How can we improve muscular response time to a stimulus? Time: one 45-minute period Content Blast: A stimulus is an event that triggers a response. Response time can be improved with practice. Materials: Per Student Pairs: plastic cup pencil small binder clip Process Skills: Observe, Communicate, Predict, Infer Preparation: The teacher will need to poke holes in the bottoms of the paper cups that are large enough for a pencil to easily slide through. Engage: Ask students what their parents do when they are driving and they hear a fire truck. Discuss how we move over to allow the fire truck to pass through. Discuss how the sound is the stimulus that causes our response to move. - 47 - Explore: Students will investigate stimulus and response by responding with hand movements to the stimulus of a dropping cup. Pass out materials to student pairs. LEP Modification: Prior to beginning this activity, the teacher should model it with a student partner. Be sure that the LEP student has understanding of the terms dominant hand, index finger, stimulus, and response time. Procedure: One student places the binder clip on the end of the pencil. The student will then slide the pencil through the hole in the cup until the cup touches the clip. The cup should be upside down. While the first student holds the cup and pencil, the second student places their dominant hand flat on the table and tucks the pencil in between their thumb and index finger. The first student releases the cup and the second student tries to pull their hand away before the cup hits it. Repeat this activity five times with the dominant hand. Students will record whether or not the cup hit their hand in a data table. Once the student has conducted five trials with their dominant hand they will test their other hand five times. Repeat entire activity with the students alternating jobs. Dominant Hand Hit Miss Trial 1 Trial 2 Trial 3 Trial 4 Trial 5 Explain: Ask the students the following questions: Which hand was slower and why? - 48 - Other Hand Hit Miss Did your response time improve over the course of the activity? What could you do to increase your response time? What would happen if the distance of the cup drop was increased or decreased? Elaborate: Students can repeat the test using their feet and compare the results to the response times for their hands. Students could also create a plan to test stimulus and response in another way to see if the results were similar. Evaluate: Students will write a reflection in their science notebooks detailing ways to increase muscular response time. LEP Modifications: Provide an alternative assessment for LEP students, for example: Let the student physically act out an answer. Let the student choose an answer from a picture array. Let the student use a single word after referencing a native language dictionary. - 49 - Multiple Choice Questions Test Questions 4.01 Identify the skeleton as a system of the human body. 1. The frame of your body, which is made up of bones and cartilage is called what? A. body B. skeleton C. muscle D. joint 2. The skeleton works together with the _______________ to move the body. A. organs B. cells C. bones D. muscles 4.02 Describe several functions of bones including: Support Protection Locomotion 3. Which of the following is most like a bicycle helmet protecting a rider? A. the skull protecting the brain B. the ribs protecting the lungs C. the cartilage protecting bones from rubbing together D. a cast used to protect a broken bone 4. Jobs of the skeleton include: A. breathing, seeing, and digesting B. protecting, supporting, and moving C. breathing, movement, and smiling D. digesting, supporting, and protecting - 50 - 4.03 Describe the functions of different types of joints including: Hinge Ball and socket Gliding 5. Bending your knees requires what kind of joint? A. a gliding joint B. a ball and socket joint C. a hinge joint D. an immovable joint 6. Places where bones can move easily are called: A. immovable joints B. partly movable joints C. at the skull D. movable joints 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices 7. A door is similar to which joint? A. gliding joint B. ball and socket joint C. hinge joint D. movable joint 8. Which of the following body parts moves in a full circle because of the ball and socket joint? A. the shoulder B. the elbow C. the knee D. the neck - 51 - 4.05 Observe and describe how muscles cause the body to move 9. What is a strong band of tissue that connects a muscle to a bone is called? A. cartilage B. tendon C. ligament D. organ 10. Raising your hand in class is an example of using a(n) A. involuntary muscle B. sprained muscle C. voluntary muscle D. cardiac muscle Multiple Choice Test Answer Key 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. B D A B C D C A B C - 52 - Modified Multiple Choice Questions Test Questions 4.01 Identify the skeleton as a system of the human body. 1. The frame of your body, which is made up of bones and is called what? A. body B. skeleton C. muscle 2. The _______________ move the body. A. organs B. muscles C. bones 4.02 Describe several functions of bones including: Support Protection Locomotion 3. Which is like a bicycle helmet? A. the skull protecting the brain B. the ribs protecting the lungs C. a cast used to protect a broken bone 4. Jobs of the skeleton are: A. breathing, seeing, and digesting B. protecting, supporting, and moving C. breathing, moving, and smiling - 53 - 4.03 Describe the functions of different types of joints including: Hinge Ball and socket Gliding 5. What kind of joint helps you bend your knees? A. a gliding joint B. a ball and socket joint C. a hinge joint 6. Places where bones can move easily are: A. immovable joints B. at the skull C. movable joints 4.04 Describe how different kinds of joints allow movement and compare this to the movement of mechanical devices 7. A door is like… A. gliding joint B. ball and socket joint C. hinge joint 8. Which body part moves in a circle? A. the shoulder B. the elbow C. the knee 4.05 Observe and describe how muscles cause the body to move 9. A strong band of tissue that connects a muscle to a bone is ? A. cartilage B. tendon C. ligament - 54 - 10. Raising your hand in class is an example of using a(n) A. involuntary muscle B. sprained muscle C. voluntary muscle Modified Multiple Choice Test Answer Key 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. B B A B C C C A B C - 55 - Appendix – Master Materials (Check individual lessons to see if materials are per class, per group, etc.) Lesson One: o one jump rope o chart paper Lesson Two: o diagram/poster of human skeleton sections (torso, arms/hands, legs/feet, skull) See examples in lesson. o overhead/Chart of class data table Lesson Three: o owl pellet (these can be purchased at a science supply store) o toothpicks o hand lens o rodent bone identification sheet (these can be found online) o envelope o human skeleton diagram Lesson Four: o 2 toilet paper rolls o heavy books o overhead, poster, or diagram of inside of a bone Lesson Five: o one uncooked chicken bone such as a wing or wish bone (thoroughly cleaned and washed in hot water) o jar with a lid o vinegar Lesson Six: o index cards o diagram of human skeleton o hinge o measuring spoon o lollipop - 56 - Lesson Seven: o 3 pipe cleaners o 3 plastic straws o scissors Lesson Eight: o several rolls of masking tape o data table with tasks to complete o blocks o paper clips o pencil sharpener o pencil o shoe with laces o book o paper Lesson Nine: o several rolls of masking tape o data table with tasks to complete o blocks o paper clips o pencil sharpener o pencil o shoe with laces o book o paper o ruler Lesson Ten: o two bendable straws o one rubber band o two paper clips o scissors o pushpin (optional) Lesson Eleven: o timer or watch with a second hand o diagram of the heart o stethoscope (ask your school nurse) - 57 - Lesson Twelve: o recording sheet o book Lesson Thirteen: o five tennis balls o books o timers or watches with a second hand Lesson Fourteen: o plastic cup o pencil o small binder clip - 58 -