After learning about circuits, we continued our investigation by figuring out how to make a motor run. Our students quickly got their motors running, and then I extended the challenge - How could you use a switch to turn your motor on and off? Once again, our students quickly discovered how to open and close a circuit. Some of our students connected a switch to the idea of a drawbridge. When the bridge is closed, the cars (or electricity) can flow. If the bridge is opened, the cars (or electricity) cannot flow. What brilliant thinkers!
Building Circuits
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