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发表于2024-12-29
Get to Know Levers pdf epub mobi txt 电子书 下载 2024
This book is suitable for ages 7 to 8 years. Levers play an important part in all our lives! Without them we could not row a boat, move a wheelbarrow, or open a bottle. This book teaches children about the different kinds of levers. Simple and easy-to-follow layouts and diagrams explain how levers lift turn, grip, and cut.
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Get to Know Levers pdf epub mobi txt 电子书 下载 2024