A little push brings action to your child's room! With this construction kit, 7 year-olds can build their own chain reaction model, where a Fischertechnik trick triggers a big reaction. When the weight falls on the plate, it sends the ball rolling along an exciting course until it hits the Fischertechnik building block, triggering a domino effect that makes the catapult launch. Use the building instructions to build 3 different chain reaction models. Your creativity knows no bounds. Young inventors can create their own exciting reactions, even integrating non-Fischertechnik parts like dominoes or other toys into the course. A fun, colourful starter set for young builders.Other inspiring chain reaction videos are available on the fischertechnik website to help boost kids' creativity. Specifications: - Age: 7 Years and older - Item size: 32 x 46.4 x 8 cm What's in the box 385 Pieces to make 3 Models