STEM building activities teach engineering through play. Walks junior engineers through 9 builds and 18 STEM experiments. Explores the fascinating science of pneumatics (air) & hydraulics (water). Includes "Think Bigger" challenges to deepen understanding of the scientific method. Set includes: 98-Page Build and Experiment Guidebook, 73 Standard K'NEX Pieces, 3 Custom Pumps with K'NEX Connectors, 3 Tubes, 4 Pumps, and 1 Rocket. 84 pieces. Ages 8 and up.