Stephanie St.Andrew 4/13/2012 4th grade Science Heat Energy 60 minutes Planning/Preparing the Lesson (Input): Standards/GLCES/CCSS: 1. P.EN.04.41: Demonstrate how temperature can be increased in a substance by adding energy. 2. P.EN.04.42: Describe heat as the energy produced when substances burn, certain kinds of materials rub against each other, and when electricity flows through wire. 3. P.EN.04.43: Describe how heat is produced through electricity, rubbing, and burning. Lesson Objective(s): 1. TLW demonstrate how temperature can be increased in a substance by adding energy. 2. TLW describe heat as the energy produced when substances burn, certain kinds of materials rub against each other, and when electricity flows through wire. 3. TLW describe how heat is produced through electricity, rubbing, and burning. “I can” objectives for elementary learners: 1. I know temperature can be increased in a substance by adding energy. 2. I can describe heat as the energy produced when substances burn, certain kinds of materials rub against each other, and when electricity flows through wire. 3. I can describe how heat is produced through electricity, rubbing, and burning. Necessary Prior Knowledge/Pre-Assessment: Students will know that energy comes in many different forms such as electricity, heat, light, and sound. Students will have already demonstrated how electrical energy is transferred and changed through the use of a simple circuit. Best Practices: 1. Interactive and cooperative classroom study 2. Activity to engage in inquiry and problem solving Student Activity/ Bloom’s & Gardener’s: Bloom’s: Application – students will apply what they have learned to the worksheets. Gardener’s: Visual/Spatial – students will be able to see a video and demonstration of how expansion works. Independent Practice: Students will have time to work independently on two worksheets dealing with heat transfer and sources of heat. Learner Accommodations: A microphone is used to enhance the teacher’s voice for students with hearing impairments. A document camera is used to blow up images/articles for students with vision impairments. Lesson Differentiation: Students who are more advanced learners will fill out the worksheet with the critical thinking questions rather than the “Heat Transfer” worksheet. Students who are struggling will be able to work on the worksheets with teacher assistance. Extra Time: If there is extra time, students can work on any of the activities that are in the extra time section in their science journals. Materials: “Heat, temperature, and energy” video from Discovery Education 23 science journals Blow dryer “Expansion of Gases” video from YouTube 23 “Heat Transfer” worksheets 23 “Sources of Heat” worksheets 23 exit slips Teaching the Lesson: Anticipatory Set: (5 min) Play the video on heat, temperature, and energy. Ask students “what are some ways that we use heat in our everyday lives?” Give students time to think and then call on students that are raising their hands. As students name some ways that we use heat every day, write them on the board. Statement of Purpose: (1 min) “Boys and girls, today we are going to be talking about heat that is a form of energy.” Detailed Step by Step Procedures: (50 min) 1. Have students take out their science journals and turn to the notes section. Have them write the date at the top of the page. Then have them write “Heat Energy” at the top as you write it on the whiteboard. 2. Ask students “when you think of heat what do you think of? How would you define heat?” Give students time to discuss in their groups their thoughts. Then draw sticks and have students share their thinking. 3. Tell students that scientists define heat as the flow of energy from a warm object to a cooler object. Write the definition on the board and have students write it in their notes. 4. Tell students that heat energy is all around us and can be found in all matter. Explain that heat energy is the result of the movement of tiny particles called atoms which we have talked about with electricity. Explain and write on the board “when matter is heated the atoms are moving around very fast and move further apart which causes the expansion.” 5. Show students the video from YouTube called “Expansion of Gases.” Then show them the show and tell that Hanna brought in. 6. Explain to students “if a solid is heat sufficiently, the movement of particles increases and overcomes the bonds that hold the particles together and the solid will change from a solid to a liquid.” Tell students “if a liquid is heated sufficiently, the movement of particles will also increase and the liquid will change from a liquid to a gas.” Tell students that we talked about this while we were talking about matter before break. Ask “what kind of a change did we call these?” 7. Explain to students that when we change states from heating matter it is known as heat transfer. Write the definition of heat transfer on the board. Tell students and write in notes “heat energy can be transferred in three different ways: convection, conduction, and radiation. a. Convection – transfers heat energy through the air (and liquids). b. Conduction – transfers heat energy through one substance to another when they are in direct contact. c. Radiation – the heat that we feel coming from a hot object. Transfer of heat by radiation travels at the speed of light and goes great distances. 8. Tell students “heat is important and living things rely on it to live. We can see and feel examples of heat all around us and we observe heat’s effects when we go outside in the sunshine and feel the warmth on our skin.” Explain that the Sun is a source of light and heat for Earth and nearly all living things rely on the Sun to survive. 9. Explain to students “heat comes from many different sources. For example, fuels can be burned for heat and energy.” Write “heat is produced when we burn fuels such as…” Ask students “what are some examples of fuels?” Let students who raise their hands share their ideas. Write the different fuels on the board as students share. Note – Some examples of fuels are wood, coal, charcoal, oil, gasoline, and natural gas. 10. Tell students “another source of heat is friction. Friction is a force that slows down moving objects and is created when two things rub together.” Write “heat is produced when certain kinds of materials rub together (friction).” Have students rub their hands together and feel the heat that is created. Ask students “what are some other examples of friction?” Give students time to think and then pick students who have their hands raised. Write some examples in notes. 11. Explain to students that electricity is another source of heat. Write “heat is produced when electricity flows through a wire. Show students that a blow dryer uses heat to dry people’s hair. Ask students to give some more examples of how electricity is used for heat (toaster, coffee maker, heating blanket, etc.). Write the examples as students give them. 12. Hand out worksheets that deal with heat transfer and the sources of heat. Explain to students that whatever does not get finished is homework. Give students time to complete assignments. Formative Assessment: (2 min) Give students the exit slip and have them hand it into the science hand in basket when they are finished. Closure: (2 min) Remind students that we have identified two forms of energy so far, electricity and heat. Tell students that next week they will be learning about some other forms of energy including light and sound. After the Lesson Has Been Taught: Using the Formative Assessment: Reflection: Name ________________________________________________________ Sources of Heat Directions: Take a piece of plain white paper and divide it into 6 even boxes. In each of the boxes draw a picture of an object that produces heat. Please label the object in the box. Please use the space provided below to list and explain how the objects in the pictures produce heat. 1. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ 2. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ 3. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ 4. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ 5. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ 6. _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ Name ________________________________________________________ Heat Energy Critical Thinking Questions 1. Heat moves from one object to another through conduction. When you put ice in your glass, does the drink get cold faster if it sits still or if you stir the liquid? Why? Does the ice melt faster sitting still in the liquid or when you stir the liquid? Why? Why do you think crushed ice cools a drink faster than does a single large ice cube? 2. Native people in some parts of the world used tree bark baskets to cook their food. They would fill the basket with water and put hot rocks from their fires into the basket. Once the water boils, the food is added. The boiling water cooks the food. How could the rocks make the water boil and cook the food? Why does the tree bark basket not burn? 3. Materials that do not conduct heat well are called insulators. Air is one example of an insulator. What materials make good insulators for keeping your drink cold on a hot day? Why do people use insulated bags to carry their lunch to school or work? Do the insulated bags keep food cold or hot? Why? Name ____________________________________ Exit Slip What happens to matter when it is heated up? Hint: Think of the second video and Hanna’s show and tell. List the three ways that heat energy is transferred. Name ____________________________________ Exit Slip What happens to matter when it is heated up? Hint: Think of the second video and Hanna’s show and tell. List the three ways that heat energy is transferred.