Isabelle J's blue fingernails contrast nicely with the red glow of a LED light powered by potato batteries.
As part of our science unit on electric circuits, students explored various ways to elicit a flow of electrons in potatoes to power a sound device, clock and other items.
Delaney C. and Aidan S. use a voltage meter to determine the amount of current generated by the spuds. Two potatoes amounted to a volt and a half. Students all calculated various combinations and varieties of potatoes in a series of informal experiments. The process included changing one variable, making predictions and analyzing the results. They later wrote up their findings.
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