Tumbling Robot Science Kit / DIY Robot Toy Experiment Kit & Science Guide An educational toy that introduces children to the fascinating inner workings of computers and gadgets, the science toy also practices kids fine motor skills. No pun intended! . Build a robot kit . 3 modes: fall and get up mode, dance mode, and somersault mode . Science experiments for kids . Complex motions from a single motor . Requires 2 AA batteries (not included) . Science guide to gears and motors . 8+ .