Wheels and cogs
By: Mandy Suhr
Series: Simple technology; Simple technology
Publisher: Wayland
Published: 2009
Place of publication: London
Language: eng
ISBN-13: 9780750259538
Subjects: Wheels; Juvenile literature; Gearing
Description: Uses simple text, illustrations, and several activities to introduce wheels and cogs and how they work. Suggested level: junior, primary.
Notes: Includes bibliographical references and index.
Table of contents: title: Wheels and shape; title: Life before wheels; title: A simple experiment; title: The first wheels; title: Make your own cart; title: Better wheels; title: Modern wheels; title: Tyres; title: Different wheels; title: Cogs and teeth; title: Machines and cogs; title: Test your cog.