Balls and sphere shapes are used in products that require a spherical component. Examples include bearings, ball screws, valves, flow meters, and gages. Balls and sphere shapes are made from materials ...

Some cubes of ice, a set of dice, a battered cardboard box. GIRL 1: Now the next shape is a sphere. Try to make yourself into a sphere – a big ball! The boy tries to make himself into a sphere ...