Construct a rubber band-powered race car that zooms across the floor. Build a catapult and launch objects through the air. Set up a launching device that propels a motorcycle across the floor at the push of a lever. Build a balancing dragonfly model and a weathervane to experiment with forces. A 24-page manual guides your model building and experiments with step-by-step illustrated instructions.Details:Make 5 awesome machinesLearn about the physics of force, motion, and energyFor ages 6 and upContents:108 pieces5 models24-page full-color manual