Let construction creativity run wild with the National Geographic Glow-in-the-Dark Marble Run.

Children can build, rebuild, and redesign endless marble run configurations while exploring the science of gravity, motion, and engineering through hands-on play.

The set includes construction pieces, glow-in-the-dark marbles, and a UV light keychain to enhance the glowing effect for exciting visual play.

With open-ended building possibilities and STEM learning built into the activity, this set offers excellent repeat play value and a strong blend of construction, creativity, and science.

Age 3+