Builds 5 models, a dragster powered by an elastic spring, a crash test car, a catapult, a gravity operated fan and a balloon-powered flying plane;Multidimensional construction system; Build structures and machines with 114 parts;36 page activity book is included with the fun, easy to assemble models - more plans can be downloaded from Engino's website;Excellent addition to a home-school curriculum;Another fun, educational product from Elenco, the company that brings you Snap Circuits

• Engino Mechanical Science Kit - Forces, Energy, Motion

Engino Mechanical Science Kit - Forces, Energy, MotionEngino