Melissa & Doug Innovation Academy kid-powered projects encourage open-ended hands-on exploration and experimentation - - it’s STEM learning made fun! With Moving Rings, kids can engineer a machine with a vibrating motor that sends rings zooming up and down two poles, while exploring the principles of sound and vibrations! Easy-to-follow illustrated instructions help kids eight and older build their project independently. Learn about energy and vibration while building the moving rings machine and activating the motor! The included Innovation Booklet enhances interactive learning long after the project is assembled.