Description 5-in-1 engineering kit: build five, fun functional models including a rescue copter, aircraft launcher, hand mixer, spinner toy, and centripetal force machine. Learn about gears and transmissions as you assemble and experiment with your models–no batteries required! Includes a 24-page, full-color manual with clear language, simple step-by-step illustrated instructions, and scientific explanations. Entertaining, affordable, and educational purchase–great birthday gift! For ages 6 and up Build five fun gadgets and learn about gears and transmissions. Create a helicopter 555060 with a rotor that spins using a rubber band-powered motor. Assemble a spinner toy that you wind up to launch a fast-spinning top. Make a centripetal force machine that flings its arms outward at high speeds. Build a hand-mixer that demonstrates a gear train. Construct a cool aircraft launcher that flings a 555060 vehicle across the room on a zipline. A 28-page manual guides your 555060 building and experiments with step-by-step illustrated instructions.
