After 20 years in the K'NEX vault, the K'NEX Big Ball Factory Building Set has returned, allowing kids to get more creative and scientific with the building process!This battery-powered machine has 3,152 colorful pieces and includes a motorized chain lift and two coaster cars, providing endless building possibilities! Your children can also make a 3-foot-high Ferris wheel from the same set, creating an entire theme park at home! Models can be built one at a time.This set helps teach STEAM (science, technology, engineering, arts, and math) principles while building on children's natural curiosity and creativity, and empowering a fun playing environment. Building with K'NEX provides a fundamental understanding of STEAM/STEM subjects.K'NEX also supports key areas of children's developmental growth. Clicking the different parts together and discovering how the building system works strengthens children's hand-eye coordination, fine motor skills, problem-solving skills, spatial awareness, and imagination!The package includes easy step-by-step instructions that guide your children through the process of building the Big Ball Factory. Ideal for ages 12 and up.