Melissa & Doug Moving Rings STEM toy

Engineer a working machine with vibrating motor that sends rings moving up and down two poles, while exploring the principles of sound and vibrations with the Melissa & Doug Innovation Academy Moving Rings Includes all materials and hardware to build, screwdriver, instruction/innovation booklet, collectible Innovation Academy seal, 8 plastic rings, backer card; 2 AA batteries required, not included Learn about energy and vibration while building the moving rings machine and activating the motor Innovation Academy kid-powered projects encourage open-ended hands-on exploration and experimentation - - STEM learning made fun A portion of sales of all Innovation Academy products supports The Whitney Workshop in Hamden, Conn., which designs and teaches projects for kids and adults that blend art, science, and invention