Buy Robot kits at http://www.sciencestoreforthestars.com/robot-building-kits.aspx – OWI Happy Hopping Frog solar kit, OWI-MSK672, non-soldering, is easy to assemble and demonstrates alternative energy principles, uses its hind legs and rubber feet to hop along activated by the power of the sun’s rays. Science Store for the Stars sells all OWI Robot kits!
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