Learning Resources Stem Simple Machines Activity Set, 19 Pieces Discover engineering wonders through scientific exploration with engaging tools and hands-on activities! A great way to introduce young children to science, technology, engineering, and math Explore 6 simple machines and how they make lives easier with hands-on activities designed to teach kids how to solve real-world problems Set includes lever board, wedge, pulley with rope and hook, cart with removable wheels, Archimedes screw, 4 barrel weights, 10 double-sided activity cards, and comprehensive activity guide with reproducible materials Largest piece (cart) measures 5"L x 3"W. Ideal for ages 5+