Learning Resources STEM Force & Motion Activity Set, 20 Pieces This STEM toy allows kids to explore the science of how things go as you conduct investigations, solve problems, and explore early engineering STEM set features all aspects of STEM, plus key science concepts of gravity, inertia, friction, push/pull, and more The STEM Force & Motion toy includes 2 cars, 2 double-sided tracks, 4 weighted blocks, pendulum ball, ladder with 2 removable bars, and a comprehensive activity guide with reproducible materials Ladder measures 9"H, tracks measure 12"L, and cars measure 2"L Ideal for ages 5+