Even history's most complicated structures began with basic engineering principles, which kids will learn with this amazing marble maze kit. Kids can plot their course, construct their contraption, drop a marble in, and watch the results, experimenting with math, geometry, and design. More than 300 pieces like gears, funnels, channels, plates, and pendulums connect in infinite combinations, and the power-lifter motor returns marbles to the top to start all over again.

• Required: 1 AA battery, not included
• Ages 8 and up

CR Number: 1072758