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Opened class with a discussion about electricity, conductors and insulators.  Talked about circuits, what a "closed-circuit" means and looks like.  Did a demo of a circuit with play-doh and an LED.  Also demo-ed a circuit with water vs distilled water-what is the difference? What makes certain materials conductive? Students then had ~30 minutes to experiment freely with Squishy Circuits-lighting lights, powering motors.

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