139 parts to build unique, fully-functioning replicas of real-world models: a balance, a wheelbarrow, and a sailboat °Includes 3 after-build experiments that teach your child about STEM concepts like lever classes, pulley systems, effort and more °Accommodates 1-2 students, working as a team - a perfect solution for home-school families °Easy-to-follow, step-by-step building instructions included °Building with K'NEX puts children on a path towards a fundamental understanding of STEAM/STEM subjects. °K'NEX Education sets come with lesson plans and experiment guides written by educators that feature hands-on, inquiry-based projects. °All teacher guides and experiment guides are aligned to national standards, including ITEEA, NSES, NCTM, NGSS and Common Core. °K'NEX Education sets let students build replicas of real-world machines to gain an understanding of the principles that make them work. The information provided here is as complete and accurate as possible; however, product names, colours and/or materials are subject to change without notice.