Build amazing marble runs with magnetic connectors that stick to any metal surface. This 90-piece STEM kit includes six types of tracks and six trick pieces for endless combinations. Kids and adults can create Rube Goldberg-style machines that teach physics and engineering concepts like gravity, motion, and energy. The sturdy connectors are easy to adjust, so you can fine-tune your design without frustration. Store everything in the included durable bag to keep pieces and marbles organized. Each kit comes with an illustrated Learning Guide that explains the science behind the fun. Perfect for kitchens, offices, or playrooms. National Geographic STEM toys deliver quality hands-on learning experiences backed by exceptional service.
