Designed to introduce students to the history, function, structural design, geometry and strength of bridges while providing opportunities for them to increase their understanding of scientific, technical and design concepts. Set includes 207 K'NEX parts – enough to build 13 fully-functioning replicas of real-world structures. Supports 2 - 3 students in groups. Packaged in a strong storage tray with snap-on lid. Includes building instructions and comprehensive teacher's guide on CD, aligned to Science, Technology, Engineering and Math standards for Key stage 1 and 2.