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Grade 5 Essential Lab # 7 Get Connected

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1 Grade 5 Essential Lab # 7 Get Connected
Big Idea 10: Forms of Energy Big Idea 11: Energy Transfer and Transformation Mary Tweedy, Curriculum Support Specialist Keisha Kidd, Curriculum Support Specialist Millard Lightburn, PhD, District Science Supervisor Division of Science This power point was developed for use with the Grade 5 Quarter 2 Essential Lab # 7 that follows the content taught in the power point developed for Essential Lab # 6, Static Electricity. (Quarter 2, Topics VIII & IV) Preview the teacher copy and get necessary preparations for the lab done.

2 Big Idea 10: Forms of Energy & Big Idea 11: Energy Transfer and Transformation
SC.5.P Investigate and describe some basic forms of energy, including light, heat, sound, electrical, chemical, and mechanical. SC.5.P Investigate and explain that energy has the ability to cause motion or create change. SC.5.P.10.4 Investigate and explain that electrical energy can be transformed into heat, light, and sound energy, as well as the energy of motion. SC.5.P Investigate and illustrate the fact that the flow of electricity requires a closed circuit (a complete loop). SC.5.P Identify and classify materials that conduct electricity and materials that do not. Teaching to the benchmarks

3 Lesson Objectives: Students should be able to: Define electricity.
Understand the role of electrons in electricity. Model the flow of electrons in a circuit. Build an actual electric circuit. Explain how to tell when the path of an electric circuit is complete. Test the conductivity of a variety of materials. Explain how electrical energy can be transformed into light, heat, sound and motion. Lesson Objectives

4 What is Energy? Energy is the ability to do work.
Engage and Explain for review: Ask what is energy? Listen to students’ ideas. Students can read the AIMS Forms of Energy Booklet (gr.4). Then have students take out their science notebook and open it to an empty page and title it Energy Review Notes. Click on the Energy hyperlink and get a definition. Have students read it. Click on the Manchester U. link: What is Energy? For an interactive review of energy forms. You can also see ScienceSaurus p. 284 for special meaning of energy and work. Students define energy as the ability to do work . Compare and contrast their understanding of energy now. 4 4

5 How do we use electricity?
Electricity powers nearly every modern gadget, from refrigerators to smartphones. But do you know how electricity works? You'll find out how electricity keeps our daily lives flowing. Engage and Explain: Ask what is electricity? Listen to students’ ideas. Discuss electricity’s use in the clip art displayed on the slide and in the classroom, school and at home. Then have students add ideas to science notebook. Click on link: electricity for a Scholastic Study Jam on electricty. For more click: how electricity works Additional Resource: ScienceSaurus Handbook: pp

6 What is electrical energy?
A form of energy that is produced when Electrons move from one place to another. Electrons are particles that are in the space around the nucleus of an atom. The forces of attraction and repulsion make electrons move. Explain/Evaluate: Students should be able to share these key ideas about electricity. You can click back to or use ScienceSaurus Handbook: pp Have students add ideas to science notebook.

7 Lab # 7: Get Connected How does an electric circuit work?
Let’s look at some parts of a circuit. What do you notice about the … bulb wire battery What do you need to do to make a circuit to light the bulb? Engage: Say the following to your students. Ask students to share what they know about how an electric circuit works. (Pass out the lab sheet and a bulb, wire and battery per group.) Let's look at the different parts of a flashlight bulb and a battery. (Pass out a flashlight bulb, one wire, and battery to each student group.) This will make it easier to understand how an electric circuit works and how to make your simple circuit to make a bulb light. If you look closely at the flashlight bulb, you should see that it has two wires sticking up that are connected by a very thin wire called a filament. The two wires go down inside the base of the bulb where you can't see them. One wire is connected to the very bottom of the base and the other is connected to the side of the base. (See drawing #1.) This is important to know if you want to make a circuit to light the bulb. See ScienceSaurus Handbook p. 300 for a diagram of flashlight and its parts.

8 What do you need to do to make a circuit to light the bulb?
Try it = Now try it with two wire. Explore: Students follow procedures on the student version lab sheet.

9 Think about this… Lab # 7: Get Connected Write your responses in your notebook.
Is electricity flowing through the systems you built? How do you know? What do you think are necessary elements of all complete circuits? What kind of energy makes a battery work? Name the transfers of energy in the circuit you built. What are you wondering now? Explain/Evaluate: Students complete Think about this … And write responses in their journal/notebook. Then discuss with a Talk Strategy: Report to a Partner; Round Table; Think, Pair, Share Students can read Gr. 5 AIMS booklet: An Electric Circuit You can also have students read and discuss.

10 How do you think a battery works? Battery Power
How does it work? A battery contains 2 different metals. Metals like all matter are made up of atoms. Atoms are made of protons, neutrons, and electrons. One of the metals in the battery wants to give up its electrons and the other metal wants to accept them. Connecting the wires, and the bulbs to a battery, gives the electrons a path to travel from one metal to another. Those traveling electrons are electricity. Elaborate: Hold up a battery and ask What do you know about batteries? What kind of energy makes a battery work? Discuss. Then click on the link: Battery Power Volunteers can read the text. Students can build a circuit and explain the role of the battery in the transfer of energy.

11 How does a flashlight work?
How is either of the circuit models you built similar to a flashlight’s circuit? How does a flashlight work? When the switch of a flashlight is pushed into the ON position, it makes contact between two contact strips, which begin a flow of electricity, powered from the battery. The batteries rest atop a small spring that is connected to a contact strip. The contact strip runs down the length of the battery case and makes contact with one side of the switch. There is another flat contact strip on the other side of the switch, which runs to the lamp (light bulb), providing an electrical connection. There is another part connected to the lamp that makes contact with the positive electrode of the top battery, thus completing the circuit to the lamp and completing the generation of electricity. Elaborate: HOTS Ask How is either of the circuit models you built similar to a flashlight’s circuit? After students responses click on link: How does a flashlight work? This activity slide can be done later with energy transfer slide # 19.

12 Lab # 7: Get Connected Activity #2 How should you connect the materials you have to make a path to test the flow of electricity? Make a plan with your group. Connect the parts to test your plan. Does the bulb light up? If not keep trying. Draw a picture of your working circuit. Show how the parts work. Engage: Say: You flip a switch and a light bulb goes on. What is there between the switch and the bulb that lets this happen? Explore: See if you can figure that out by building an electric circuit activity #2 procedures. Additional activity: See Gr. 5 AIMS: An Electric Circuit Booklet; Activity: Make a switch pp Materials Needed: Size D battery with a holder, light bulb in a holder; 5 lengths of wire; switch (index card and 6 brass prongs)

13 Conductor or Insulator
Activity #2 Which common materials are good conductors for the flow of electricity? Object Prediction Conductor or Insulator penny Pencil (wood part) (metal part) Eraser Paper clip nail Plastic spoon Engage: Read and discuss Gr. 5 AIMS booklet p. 1: Conductors and Insulators. Ask what students know about conductors and insulators. Then read pp. 2-4. Explore: Tell students to follow the procedures for testing which common materials are good conductors for the flow of electricity.

14 Looking Back Were your predictions correct? How do you know?
How are the materials that conducted electricity allowing the bulb to light alike? Which material created the brightest bulb? What are you wondering now? Explain/Evaluate: Have students share out. Extend: Additional activity: Conductors or Insulators, pp

15 Electrical Resources Electricity in our Lives Simple Circuits
Building Circuits Extend/Elaborate: Sites to explore

16 Parts of the Circuit and their Jobs
Source of current Carries current Turns circuit on and off Changes electrical energy to light Battery Bulb Switch Wire Explain: Review concepts with Gr. 5 AIMS booklet: An Electric Circuit Evaluation: Parts of a circuit quiz on slide and click on the link: Parts of the Circuit and their Jobs for the Electricity Quiz. Plus assessment questions: What does making a complete circuit mean? Why are many wires coated with plastic? Online quiz: click on Parts of the Circuit and their Jobs What does making a complete circuit mean? Why are many wires coated with plastic?

17 Electricity Project Ideas
Give a presentation Act it out Write a story about… wasting energy daily. loosing electricity for one week. realizing that conserving energy helps the entire community. Create a model Write a report or an essay Compose a song Make a poster Elaborate/Evaluate: Electricity Project Ideas to try

18 Writing Prompts Write to Explain Make a Drawing with Labels
Create a drawing to include everything you would need to make a light-bulb light or a radio work. Label your drawing and use arrows to show the direction of the current. Describe how the circuit works. A classmate is studying a cord that connects a lamp to a wall outlet. The classmate sees that the inside of the cord is made of metal wire, and that the outside of the cord is made of plastic. Explain why each of these materials is used in the cord. Evaluate: More ideas

19 What is the Transfer of Energy?
Energy can move from one object to another. < < light electrical chemical What does the energy of a lit light bulb change into after the flashlight has been on for a while? Heat Energy Explore: Have two flashlights ready for a demonstration. Review SF Science Book: Read and discuss the first two sentences in the 3rd paragraph on p Have students write Energy can move from one object to another. Hold up a flashlight and have a volunteer turn it on. Ask why is the light bulb in the flashlight giving off light? What energy moved from what object to another inside the flashlight ? Explain: If available direct students to go to ScienceSaurus p. 300 to see the flashlight illustration or have a student at each group open take apart a flashlight and let everyone in the group look at it. You can go to the site: and go back to the slide # 10, How does a flashlight work? When the flashlight is turned on the battery’s stored chemical energy is changed to electrical energy and travels through the wires in the electric circuit to the light bulb and transfers to light energy. Students draw a diagram of the flashlight and label the energy movement within it. Evaluate: (Next have students answer ? #2 on p ) or ask: What does the energy of a lit light bulb change into after the flashlight has been on for a while? (Heat energy)

20 What can electrical energy be changed to?
Explain/Evaluate: Ask: What are some transfers of energy taking place in our classroom, in our school, or at home? Have students use the clip art on the slide and name various energy paths. A toaster uses electrical, mechanical, and thermal energy Electrical energy can be changed to other forms of energy, but it is not created or destroyed. It is conserved. Gizmo Energy Conversions

21 Transformation of Energy
B. B. B. Evaluate: Have students number their journal and write how energy is changed from one form to another. 1) A. B. 2) A. C. 3. Identify three energy transformations taking place in the classroom right now. Extension: Explore Learning GIZMO: Energy Conversions C. Explore Learning GIZMO: Energy Conversions

22 Forms of Energy Energy Forms 1. Heat/thermal 2. Chemical 3. Mechanical
4. Light/Radiant 5. Electrical 6. Sound What Happens? A. Objects vibrate B. Objects warm. Food cooks. C. Organisms move and grow. D. Lights on. / Machines run. E. Flashlights light up. F. Sled slides down the hill. Explain/Evaluate for review: Ask students to give examples about what happens from each of the forms of energy in the first column. Then show the 2nd column and have students match up What happens? To the each energy form.

23 Online Resources (See Pacing Guide Topic VII Page 3)
Online Resources

24 More Online Resources
Online Resources

25 Discovery Education Resources
Exploration: About Electricity Reading Passage: All Charged Up Video: Electrons Video: Two Kinds of Electricity Exploration: Electric Current Reading Passage: Need a Jump Video: Circuits Video: Electrical Flow Discovery Elementary Science Online Resources

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