***MISSING PARTS*** NATIONAL GEOGRAPHIC Glowing Marble Run Expansion Pack - 5 Glow in The Dark Glass Marbles, 20 Construction Pieces, Great Creative STEM Toy for Girls and Boys, Marble Maze

Additional Details from the Manufacturer

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More features

• EXPAND YOUR MARBLE RUN - This expansion pack (not a stand-alone marble run kit) enhances National Geographic Glow in the Dark Marble Runs (non-magnetic) with 20 additional construction pieces that fit snugly so your marble maze won’t fall apart: 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.
• ENHANCE THE ACTION - The included trick pieces will add even more excitement to your marble maze creations!
• GREAT STEM TOY – The included Learning Guide inside teaches about the physics of motion and aerodynamics. It also includes marble run construction experiments!
• AWARD-WINNING PRODUCTS - Blue Marble, winner of the Toy Association's prestigious Toy of the Year Award, proudly develops products that foster education, imagination, and creativity, with a US-based support team to ensure a stellar experience!