Ages 5-8 · Building Popular

Marble Run Builder — 120 Piece Set

Engineering meets pure fun in this 120-piece marble run set. Kids design and build elaborate tracks using translucent tubes, ramps, funnels, spiral columns, loops, and see-through sections that let them watch marbles race through their creations. Each build teaches physics concepts like gravity, momentum, velocity, and cause-and-effect. The set includes 20 glass marbles, a challenge booklet with 15 designs of increasing complexity, and open-ended parts for free building. Compatible with most major marble run brands for expandability. The satisfying click of pieces snapping together and the thrill of watching a marble complete a complex run keeps kids engaged for hours.

Buy Now — $29.99

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