Science SCI.IV.1.4 Strand: Grade: 4th Using Scientific Knowledge in Physical Science - Changes in Matter Standard: All students will explain how electricity and magnetism interact with matter. Benchmark: Construct simple, useful electrical circuits. Constructing and Reflecting: SCI.I.1.1 - Generate reasonable questions about the world based on observation. SCI.I.1.2 - Develop solutions to problems through reasoning, observation, and investigation. SCI.I.1.3 - Manipulate simple devices that aid observation and data collection. SCI.I.1.4 - Use simple measurement devices to make measurements in scientific investigations. SCI.II.1.1 - Develop an awareness of the need for evidence in making decisions scientifically. SCI.II.1.3 - Describe ways in which technology is used in everyday life. SCI.II.1.4 - Develop an awareness of and sensitivity to the natural world. SCI.II.1.5 - Develop an awareness of contributions made to science by people of diverse backgrounds and cultures. Vocabulary / Key Concept Context • • • • • • • Flashlights and battery-powered toys. Complete loop Batteries Bulbs Bells Motors Wires Electrical switches Knowledge and Skills Students will construct a complete circuit. The circuit will include a pathway from the battery, to wire, to bulb or bell, to wire, then back to the battery. Resources Coloma Resources: “Circuit Wizards” – Science Olympiad activity See attached sheets (will require a formal rubric for scoring) Other Resources: Teachers’ Domain – Lesson Plan – Electric Circuits – AWESOME site with OUTSTANDING resources – video clips, teacher notes, and complete lesson plans – HIGHLY Recommended! http://www.teachersdomain.org/35/sci/phys/mfe/lp_electric/index.html Electricity and Magnetism – experiments for 4th Grade – Hands on Technology – includes teacher notes and extensions for a NICE variety of simple activities to demonstrate principles. http://www.galaxy.net/~k12/electric/index.shtml The Exploratorium – Snacks about Electricity – fun and simple activities to explore electricity – EXCELLENT! http://www.exploratorium.edu/snacks/iconelectr icity.html SMILE Physics – Electricity and Magnetism – Extensive and OUTSTANDING selection of labs and activities – IL Institute of Tech. http://www.iit.edu/~smile/physinde.html#p4 The Shocking Truth about Electricity – ThinkQuest winner – AWESOME! http://library.thinkquest.org/6064/ The Electric Pickle – Excellent teacher demo (very impressive) with lots of explanation for how the phenomena actually works. http://www.discoverchemistry.com/dcv2docroot/student/fun_stuff/electric_pickle/default .html Instruction Benchmark Question: What are electrical circuits? Assessment Coloma Assessment: BCISD assessment. See below Focus Question: How do you build an electrical circuit? Using a battery, wire, bulb or bell, students will construct a circuit. To show the complete pathway students may choose to draw and label a diagram, or explain to a peer the circuit created. Students will create an incomplete circuit for another student to explain and demonstrate “What is wrong with this?” Invite and electrician or electrical inspector to the classroom for a presentation directed toward: • Safety considerations • Tools of trade • Education and training needed • Local items of interest Optional Assessment: Using any of the following items, the student will create a useful electrical circuit: battery, wire, aluminum foil, masking tape, socket, bulb, bell, paper clip or brad. Student successfully creating electrical circuit meets the standard. Teacher Notes: Explain how electricity (and magnetism) interact with matter. All students should know safety precautions about electricity. Beginning in the third and fourth grade, students should be constructing simple and useful electrical circuits. They should be able to understand how a flashlight works. In the middle school, the building of simple circuits is explained in terms of flow of current. Students also move beyond looking at battery powered toys to explaining how electrical devices such as radios and stereo systems work using appropriate safety precautions. Finally, at the high school level students will explain how current is controlled in simple, series and parallel circuits. They also will consider the interaction of wires and magnets to produce electric currents. Science Olympiad Electric Mystery Cards Circuit Wizardry Materials: One piece aluminum foil Two 4 x 6 cards, one having 6 pre-punched holes Scotch tape Flashlight bulb with bulb holder “D” battery Three 8-inch wires (18-20 gauge) One instruction and diagram sheet One pencil Directions: Tape the two 4 x 6 cards together on the long side so the numbered holes are up. Take the aluminum foil and tape a strip of it to the bottom card so that the foil connects two of the holes. Do not twist the foil. When taping do not let the tape cover the area over the hole. This will insulate the conductor and no current will flow. You may want to connect one or two more pairs of holes. All holes must have aluminum foil underneath them. When you are finished making your Mystery Card, give it to another person in your group to test. Testing the Cards: You will test the cards for the pairs of holes that are connected with foil. Do not open the card you are testing. Use 3 wired, a bulb holder with a bulb, and a battery. Tape the wires to the battery, 1 wire on the positive end and the other wire on the negative end. Connect 1 wire to the bulb holder and take 1 of the 2 wires from the battery and connect it to the bulb holder. With 2 wires, one from the battery and the other from the bulb, touch the pairs of holes indicated in the chart. Record your results. From your record, draw lines on the diagram A, where you think the aluminum foil has connected the holes. Now open the card. Record how the aluminum foil actually connects the holes on diagram B. Scoring Rubric Section Card system preparation Identification of the circuit pattern of the card system. Completion of Report Sheet (Attached) Points 35 A well prepared card system. 30 Correctly identified circuit pattern. 35 Accurate and complete Report Sheet 100 points Points 25 Effort made but errors 20 Effort made but errors Points 15 Little effort not useable 10 Little effort not useable 25 Effort made but errors 15 Little effort not useable Fill Out The Report Sheet Completely 1. How can you find out where the aluminum foil connects the numbered holes? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ 2. How would you find out if hole #1 and hole #2 were connected? _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ _____________________________________________________________________ 3. Test all the possible pairs and record results in the chart. Pairs Does Bulb Light? (yes/no) ___________ ___________ ___________ ___________ ___________ ___________ ___________ ___________ 1-2 1-3 1-4 1-5 1-6 2-3 2-4 2-5 2-6 Pairs Does Bulb Light? (yes/no) __________ __________ __________ __________ __________ __________ __________ 2-7 3-4 3-5 3-6 4-5 4-6 4-7 4. Use your observations and draw lines on diagram “A” where you think the aluminum foil is connecting the pairs of holes. 3 4 2 5 1 6 Diagram “A” 5. 3 4 2 5 1 6 Diagram “B” On diagram “B”, draw the pattern of aluminum as it actually is on the card. 6. How do diagrams “A” and “B” compare? ______________________________________ ________________________________________________________________________