KEVA Contraptions 200 Plank set

No glue or connectors, just simple stacking that obeys the laws of gravity. Building tunnels, towers, ramps and chutes teaches the principles of velocity, slope, momentum and balance. 2 specially designed lightweight bouncy balls and a detailed guide book – and future architects, designers and builders of every proficiency level are off and rolling. For ages 7-10 yrs, from MindWare. Take hands-on learning to the next level with KEVA Contraptions 200 high-precision KEVA planks and two specially designed bouncy balls that are lightweight for maximum action The "bounce" of the ball provides some of the most surprising moves—make it twist, bump, hop and stop Guide book is loaded with instructions, photos, ideas and tips Simple, high-quality materials for countless hours of fun Learn the basics of physics and engineering

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