Designed to emulate a Children’s museum classic, this is the toy that lets children create and connect a ball maze using pressurized air tubes. Similar to a marble run, children can construct their own unique layout and pathway for the included balls to travel. Once assembled, a built-in fan can be engaged, sending the 20 EVA foam balls through the air tube maze. Appropriate for children of all genders and ages, the set helps teach basic STEM principles including spatial reasoning, problem solving, physics, and pneumatic pressure. The fan has 15 speeds and runs over an hour on a full charge. Includes 20 balls, six 12" transparent tubes, six transparent orange corner tubes, one T-shaped tube, 1 funnel, 12 connectors, and a fan unit. Charges via included AC adapter. Ages 3 and up.