Windbots: 6-In-1 Wind-Powered Machine Kit

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Build six awesome bots that move without any batteries or electricity. The secret behind these fascinating machines is one of the oldest power sources in the world: wind! A full-co lor manual guides you in assembling six models one at a time from over 130 pieces. Easy, snap-together assembly requires no glue Step-by-step, illustrated instructions 6-in-1 engineering kit: build six wind-powered models and a handheld wind generator. Start cranking the generator and watch them go! Learn about gear ratios and wind-power technology. For Age 8 + Show more