Grades K & up. Get your motor running with real STEM learning! Discover the science of motion through scientific exploration with colorful, engaging tools and hands-on activities. Explore the science of “how things go” as you conduct investigations, solve problems, and explore early engineering. Features 10 double-sided Activity Cards covering all aspects of STEM, plus key science concepts of gravity, inertia, friction, push/pull, and more! Ladder measures 9 1/4"H, tracks measure 12"L, and cars measure 2 3/4"L.