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These fun projects encourage younger children to investigate the world around them, while introducing them to fundamental science principals. How do wheels work? looks at rolling and sliding. Four characters use their experiences playing out in the garden to find out about and understand the science of friction. Topics include Why are slides smooth? Why do things skid in the wet? and How does a hovercraft work?

How Do Wheels Work? 2002, Franklin Watts Ltd, London

ISBN-13: 9780749644864