• 442 K’NEX rods and connectors plus 2 battery motors, 2 flywheel motors, and 4 transparent spring motors included. • Instructions to build 11 models – 4 of most can be built simultaneously. • Comprehensive guide with 7 inquiry-based lesson plans included. • Packed in a strong, stackable storage case with removable dividers, and snap-on lid. • Supports 8-12 children working in teams of 2-3. • Grades 5-9
