This book is part of a book series called Simple Technology .

This book is aimed at children in primary school.

There are 32 pages in this book. This book was published 2009 by Hachette Children's Group .

Mandy Suhr is a qualified primary school teacher and experienced children's writer and publisher. The artist, Mike Gordon, specialises in humorous illustrations and has won several awards for his work. He is based in Santa Barbara in California.

This book has the following chapters: Wheels and shape Life before wheels The first wheels Better wheels Modern wheels Tyres Different wheels Cogs and teeth Machines and cogs Cogs and energy Glossary Notes for adults Suggestions for further activities Other books to read Index