Children can explore cause and effect through hands on designing, problem solving activities and early engineering, recording data as they go in order to find an optimum solution. This  set focuses on a variety of key science concepts including simple machines, design solutions for real world problems and investigations. Eye-catching set includes a lever board, wedge, pulley with rope and hook, cart with four removable wheels, Archimedes screw, four barrel weights and 10 activity cards and activity guide with reproducible materials.