National Geographic Glow-in-the-Dark Marble Run
Let your construction creativity run wild!
Detailed learning guides inside teaches the science of gravity and motion
*Explore the world of engineering, gravity, and motion.
*41 marble run construction pieces, 8 glow-in-the-dark marbles, and a UV light keychain. Together equals the 50-piece count
*Comes with a storage bag to keep all your pieces together
*Compatible with all our other marble run sets so you can build even bigger
41 Construction Pieces
8 Glow-in-the-Dark Marbles
1 UV Light Keychain
1 Storage Bag
1 Learning Guide with Instructions