책 세부 정보
형식
킨들
페이지
24
언어
영어
출판됨
Jan 1, 2014
출판사
The Child's World
ISBN-10
1631431323
ISBN-13
9781631431326
설명
Readers learn how this simple machine makes it easier to keep objects locked together. By the end of the book, readers know the difference between complex and simple machines and how screws are used in everyday life to make work easier.