Discover Engineering wonders through scientific exploration with engaging tools and hands-on activities! Introduce and explore all 6 simple machines by making amazing discoveries, designing solutions for real-world problems, and conducting investigations. Includes a lever board, wedge, pulley with rope and hook, cart with removable wheels, Archimedes screw, 4 barrel weights, 10 double-sided Activity Cards, and a comprehensive Activity Guide. Largest piece (cart) measures 5″L x 31/2"W.