K'nex Introduction To Bridges K-78640

Build 13 different bridge K'NEX models, one-at-a-time. Set includes activity cards with real-life photo and key facts. Models demonstrate 7 key bridge types: beam, truss, arch, cantilever, suspension, cable-stayed and moveable/bascule. 207 pieces support 3 students working in a team. Gr. 3 to 6.