Chaos Tower Rube Goldberg Inspired Award Winning Marble Run and Separately Sold Expansion Pack for Additional Fun CREATE CHAOS - The Chaos Tower allows kids to build and assemble a chain-reaction interactive tower to transport a marble from point A to point B using their own imagination. Your children or students will enjoy endless hours of fun with this set and exploring the possibilities. The tower has a maximum height of 78 inches for oversized excitement. EDUCATIONAL FUN - Young learners will get their first lessons of perpetual motion and physics in a controlled setting with the Chaos Tower. The motor-driven chain will lift the ball to the very top of your childs Chaos Tower and start the chain reaction of events through a maze to reach the catch basket or bottom of the tower. This kit includes an educational CD-ROM for clear, easy-to-understand instructions. FULLY CUSTOMIZABLE - Get creative with the 602 pieces includes in the Chaos Tower set. After your kids assemble the tower frame to their liking, they can adorn their tower with entertaining additions like a loop-d-loop, trampoline, vortex, slides, chutes, and many more. The variety of this kit will provide children with endless possibilities every time they decide to start again. INSPIRED BY RUBE GOLDBERG - Rube Goldberg was an engineer and cartoonist who was famed for making complicated contraptions to accomplish simple tasks. These tasks that were once easy and straightforward became laughably convoluted with these intricate chain reactions. Taking these principles, boys and girls can spend time watching the marble go on an amusing journey down their Chaos Tower. GREAT FOR S.T.E.M. LEARNING - Science, Technology, Engineering and Mathematics; rather than teach the four methods as separate and individual subjects, STEM consolidates them into a interconnected learning standard based on real-world applications. Each kit is a working model that demonstrates STEM concepts for ages 7 and up.