Your budding physicist can embark on the engineering adventure of their dreams with this build-it-yourself kit that guides them through step-by-step assembly of a gyroscopically balanced robot and tons of track layouts.What it does: Your little one can select any of the 26 various configurations or use their imagination to snap together track segments and create a monorail system full of twists and turns for the robot to navigate.Additional features: The mind-boggling design utilizes ball bearings as the weights of the gimbal, rendering it nearly frictionless as it glides along the monorail track.Includes: 186 pieces, 26 experiments and 32 manual pages.Sizing information: 15" x 11.3" x 3". Warning: Choking hazard. Small parts. Not for children under 3 years Ages 8 and up Assembly required Requires AA batteries Plastic/motor Imported