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In this electrochemistry activity, young learners and adult helpers create a battery from a potato to run a clock.

Learners build a wind turbine and test it to see how much energy is created.

In this activity, learners build a switch to turn electrical circuits on and off.

Learners use engineering design principles to construct and test a fully solar-powered car. Solar car kits usually include a photovoltaic cell and motor; some include a chassis as well.