As part of our economics unit study, my son and I are learning about different jobs he is interested in. He wants to be an engineer when he grows up, so we went down a little rabbit trail as he learned about who and what an engineer is.
We read Saving The Day, a story about Garrett Morgan who invented the traffic signal. This led us to make our own paper traffic signal circuit.
Material
1. LED Lights
2. Copper Tape
3. Large Paper Clip
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