Discovering Spheres

A sphere has no corners or edges. Planets look like giant spheres in space. Learn more about what spheres are and what they are used for in Discovering Spheres, a title in the 3D Objects series. 3D Objects is a series of AV² media enhanced books. A unique book code printed on page 2 unlocks multimedia content. These books come alive with video, audio, weblinks, slide shows, activities, hands-on experiments, and much more.