Get to Know Pulleys (Get to Know Simple Machines)

Get to Know Pulleys (Get to Know Simple Machines)
Автор
 
Год
 
Страниц
 
32
ISBN
 
077874468X
Издатель
 
Brighter Child
Категория
 
Новые поступления 2009 г.
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Описание:

This title is suitable for children of ages 7 to 8 years. Pulleys help make up some of the most complicated machinery, from car engines to cranes. See how pulleys lift and move heavy things, how pulleys work together, and the different kinds of pulleys. Kids get to use their own pulleys in the fun with pulleys section.

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