Engineered for fun, this durable and colorful activity set is an ideal addition to STEM education supplies. Perfect for a classroom science center, young students can explore 6 simple machines through hands-on activities that help introduce the basics of physics. This brain-growing buy also challenges little learners to exercise and sharpen their problem-solving skills. Includes a lever board, wedge, pulley with rope and hook, cart with 4 removable wheels, Archimedes screw, 4 barrel weights and 10 double-sided activity cards. Plastic. (23 pcs. per set) torage box, 10-1/4" x 13-3/4" x 3". Simple assembly required.