Stuffer

Learn about photovoltaics and convert radiant energy into mechanical movement. Use the sun to spin a reflective disk! Learn about converting solar ...

Environmentally safe, non-toxic, and clean - the saltwater fuel cell Beach Runner is designed and intended to facilitate transport via salt water f...

Teach Tech by Elenco, the makers of Snap Circuits. Build it yourself and learn how gear mechanisms work. Finished size is approximately 2.5"/63.5 ...