Smartivity Gear Propeller Flying Machine - Is it a plane? Is it a bird? No, it’s a flying machine! And you get to build it, tune it, and play with it! Try different combination of gears, speeds and wing angles, and change the way it flies! Sling boredom out of the window, and take to the skies with this cool new Smartivity STEM Educational DIY toy. (includes richly illustrated, easy-to-understand, step-by-step Instruction Booklet) For Ages: 6 years and older D.I.Y. Time: 45 min | Play Time: Unlimited Skills Developed: Analytical Skills, Creativity, Motor Skills, Practical Skills