SmartLAB Weird & Wacky Contraption lab set - gently used

Looking for a creative gift? Smart Lab's Weird & Wacky Contraption Lab has 66 mix-and-match pieces to create and test nearly any crazy contraption your child's imagination can conceive. Your child can play the architect, builder, or engineer using the variety of wacky parts, gears, levers, and tracks along the Velcro-like play surface. Kids will learn fundamental physics concepts, such as gravity, momentum, and velocity, and problem solving in a fun and interactive way. The easy-to-read manual includes five course designs to get the experimenting--and fun--off to a start.