GREEN SCIENCE POTATO CLOCK MAKING KIT
Become a Scientist as you discover how to power this digital clock using a potato, a great educational toy which will help teach children what other substances will power a clock besides a battery. Inside this Green Science Potato Clock Kit you have a basic digital clock and instructions (sorry the spud is not supplied). Just push the zinc and copper electrodes into the potatoes causing an oxidation/reduction reaction that is converted to low voltage. In our HYDE+SEEK shop we also used a lemon to power our clock.
Age 8 + Not suitable for children under 3 years.