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Robbie is the "new and improved" version of the Smart Bot. Robbie has 50 programmable mode actions, robotic sound, controlled with hand signals, bu...

Think of this as an analogue robot. Wood and string combine to make a precision grabbing device. The builder controls the bot with levers and str...

Build and experiment with dozens of roller coaster models to make learning the physics of force, motion, and energy as fun as a day at the amusemen...

Build five fun gadgets and learn about gears and transmissions. Create a helicopter model with a rotor that spins using a rubber band-powered motor...

Build six awesome bots that move without any batteries or electricity. The secret behind these fascinating machines is one of the oldest power sour...