Who designed the first wheel? Why do wheels need tyres? Full simple experiments help you find the answers to these questions.
This is Book 1 in the Simple Technology Series. See all Simple Technology books here.
See More Educational: Technology
No one has written a review for 'Wheels and Cogs'
Why not be the first to share your opinion?
Mandy Suhr is a qualified primary school teacher and experienced children's writer and publisher.
More about Mandy SuhrCarmela LaVigna Coyle lives out west in Colorado with her husband, Mike, their two college-age children, and her lovable, cuddly, precocious pup that gangly answers to the name of lulu. Mike Gordon's award-winning illustrations span fiction, non-fiction, entertainment, and educational books worldwide. He lives in Santa Barbara, California.
More about Mike Gordon
