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Water-Powered Digital Clock
LCD display clock tells date and time using only water and metal probes - demonstrates conservation of chemical to electrical energy.
Item#: 15671 Age: 13+
Two Potato Powered Clock
Use this clock to demonstrate the principles of an electrochemical cell!
Item#: 13973 Age: 15+
(1 customer reviews)
Laboratory Counter / Timer
This laboratory counter/timer is perfect for science projects or lab experiments!
Item#: 14256 Age: 14+
Lemon Clock - DIY Fruit-Powered Clock
You will be able to explore the science of batteries using this lemon clock!
Item#: 14617 Age: 6+
Digital Stopwatch - 100th of second
This electronic stop watch comes complete with battery and carrying cord.
Item#: 16937 Age: 14+
(1 customer reviews)
