Enjoy hours of interactive fun with K'NEX. This building set contains 744 classic parts and pieces, including rods and connectors, to form 3 different amusement park rides. These durable plastic pieces can be easily attached to one another and are simple to reassemble as well. Set consists of 744 classic K'NEX pieces that allow you and your children to create 3 different models, one at a time. Set includes a battery-powered motor that gives life to the K'NEX pieces. Requires 2 "AA" batteries, not included. Set comes with an easy-to-follow instruction manual. Ideal for kids 9 and up. STEAMagination - It's the connection of STEAM (science, technology, engineering, arts, and math) with a child's curiosity and creativity. It powers the fun of each K'NEX set. Operate an amusement park right in your home as you build thrilling rides with K'NEX 3-in-1 Classic Amusement Park Building Set!