Description
STURDY TIGHT FIT PIECES – This expansion pack enhances your National Geographic marble run with 20 additional construction pieces, designed to fit together snuggly so your marble maze won’t fall apart while you play, Includes 9 tube pieces, 9 action pieces, and 2 base pieces
GLOW IN THE DARK MARBLES – add 5 new glow in the dark glass marbles to your collection and watch them shine bright as they zig-zag down the marble run.
UV KEYCHAIN LIGHT – a UV Keychain light comes with the expansion pack to help give your marbles the ultimate glow
GREAT STEM TOY – the learning guide inside teaches about the physics of motion and aerodynamics. It also includes marble run construction experiments
RESPECTED QUALITY – providing children with the best educational STEM toys, this kit comes with National Geographic’s 100% satisfaction guarantee
