Ever wonder how movies are made? You might already know movies are made of millions of individual pictures, but do you know why you don't see each picture? This phenomenon is called persistence vision. Learn more about this, color theory, and optical illusions as you have fun observing it in action! Kit Includes: Miniature motor, D cell battery holder, contact key, 12 connector cords, 8 disks, and exploration Guide Ages: 7+. Battery not Included. This product ships in approximately 1 days