"Leo teaches his cat Pallas all about spheres by applying his knowledge of geometry to their Stone Age world. Entertaining illustrations and stories provide a fun introduction to math concepts, including radius, circumference, and diameter. Information boxes accompany each story to explore real applications of spheres in the natural and designed world."-- Provided by publisher.

A game of football -- Rolling spheres -- Layer by layer -- Ancient spheres -- Throwing the ball -- All directions -- Balloons -- Earth's sphere -- Half a sphere -- Dividing the orange -- Squashed sphere -- Cylinders -- Bendy helix -- Spheres around us.