wheels

Primarily a pictorial essay on the development of the wheel starting with the ancient Egyptians to the present.

A runaway wheel takes a bouncy, bumpy, amusing journey through town.

Photographs and simple text in both English and Spanish describe how wheels and axles work in simple machines.

Traces the development of the wheel and its use in machines and transportation from earliest times to the present.

Looks at many different kinds of wheels and discusses how they are used.

Photographs and simple text introduce different kinds of wheels used on racing vehicles.

An introduction to extreme wheel sports, such as BMX racing, Formula 1 racing, and mountain biking, that provides information on their history, rules, equipment, and techniques and includes tips for safety, healthy living, and exercise.