Smart Lab Toys You-Build-It RoboXplorer Tests it's limits by towing cars, climbing a stack of books, or negotiating a wall Roboxplorer will stop at almost nothing Includes instructions for five guided projects that touch upon the science of motion and energy to explain why RoboXplorer reacts differently to various terrains More than just a toy and book, SmartLab products satisfy and engage a child's curiosity Science becomes an adventure