Smartivity Gear Propeller Flying Machine STEM Educational DIY 

Man always dreamt of flying, and for decades people have made this come true by building innovative flying machines. Let your child build his own Flying machine and soar to the sky as he learns the basic concepts of rotational motion and flight. This toy consists of 2 gears of different speed, 2 types of wings for the flyers, and a unique mechanism to change the angle of the wings.The flying machine has great range of play making it possible to be launched indoors as well as outdoors.