What can electricity flow through? That was the question we asked as we explored conductors and insulators. We built conductor/insulator-testers (which really looked like something out of Star Wars) and went around the room trying to find various conductors and insulators. Students hung their testers around their neck and with the help of a partner, attached the wires of a complete circuit to opposite ends of an object. If the motor on our tester ran, we knew electricity was flowing through the object. In the picture below, Naomi, Kandice, and Amy are testing out a the metal end of a pencil.
We were surprised by our findings. ALL metals are conductors (which not all metals are attracted to magnets...hmmm); while glass, porcelain, rubber, and plastic are all insulators. Here's a picture of Anna testing out George's necklace.
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