You may know potatoes as a good source of potassium, but did you know they can be used to power an alarm clock? The Potato Clock allows you to generate enough electricity to run a digital clock using potatoes! Just push the zinc and copper electrodes into the potatoes, causing an oxidation and reduction reaction that is converted to low voltage. Watch your child's delight and sense of accomplishment with the clock they create, and teach them to leave a smaller carbon footprint on the world. The Potato Clock Science Kit contains a digital clock and the instructions and everything you need (except the spuds) to run it!
The Potato Clock Science Kit is recommended for ages 7 and up, and requires two potatoes (not included), but no batteries!