The students were given plastic covered wire (conductor and insulator), battery, and several different objects. They had to successfully build a complete circuit. They had to know to ask the teacher to cut their wire to expose the conductor. The circuit wouldn't work if the plastic was touching because it is an insulator. They had a lot of fun, lighting up the room, buzzing sound energy and watching the battery heat up the thermometer. Some of them even figured out how to expand their circuit to test more than one form of energy.
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