Headed to Shoals High School to do some paper circuits with a couple of classes.
They quickly did the battery & bulb (light up one LED with one battery, try each color, how many can you do at once, which colors work together). Then we introduced alligator clips for our wires. We started with 1 light again. The first difficulty is that everyone wants to clip the alligator clips from both wires to the battery (essentially touching both sides of the battery at once, creating a short circuit). Then we tried a series and parallel circuit. There is always a bit of struggle (lights need to be in the same direction ; connections need to be good). And the flaw that in series, you need two batteries (each LED needs about 3 V). After that they created a paper circuit with copper tape. One class was not so interested in making a drawing, but we got through it and they all accomplished the task.
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