I gave this to my son for his 4th birthday and expected to use it with him. He really enjoys the projects and both of us have a great time playing and learning. The only problem we had was that one page was warped and made the project involving planetary gears challenging.
Great activities!
Published by Thriftbooks.com User , 22 years ago
This book is wonderful! I got it for my 7-year-old daughter, and she immediately sat down to work. This books takes kids from the basic idea of how gears work, through all the every day uses gears have. She absolutely loved the book!
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