Discover the science of motion with engaging tools and hands-on activities! Conduct investigations, solve problems, and practice early engineering. Ten double-sided Activity Cards cover all aspects of STEM, plus key concepts of gravity, inertia, friction, push/pull, and more! Includes 2 cars, 2 double-sided tracks, 4 weighted blocks, pendulum ball, ladder with 2 removable bars, and a comprehensive Activity Guide. Ladder measures 91/4'H, tracks measure 12'L. Small Parts (1) Not for children under 3yrs.