This latest kid craze is the perfect way to bring more awesome science into your classroom! Students are already fascinated by this gadget; now you can fill in the WHY! Three weighted arms and precision bearings contribute to amazingly long spin times. This is a wonderful way to teach about energy, friction, rotational inertia, gyroscopic stability, and precession! With just a quick spin, you can instantly feel gyroscopic forces in play - easily feel the resistance to any change in orientation. A great opportunity to use a fad to teach force and motion! Colors may vary.