Roly Poly Robot will tumble, fumble and stumble but will find a way to right itself. The moment you turn it on, Roly Poly will speed away on its two cyclonic wheels. The engineering genius behind this well thought out vehicle enables it to get on its "feet" whenever it tumbles, to continue on its new path of exploration. The kit engages learning about gear structure, battery wiring, switch, motor and principles of Ohm's law. Very easy to assemble, fewer than 20 parts.