Toysmith 4M Green Science Spinning Top Generator

Learn about electromagnetism as you build this 4 1/4" diameter generator that powers a mini light bulb. No batteries required! A detailed instruction manual will help guide you, and fun facts about how the generator works will get any kid interested in the wonders that engineering and science has to offer. AWESOME item for a lesson on natural energy and creating amazing contraptions!! Contains small parts. Not for children under 3 yrs.