Pulleys
题名:
Pulleys
PERSONAL_AUTHOR_EPSB:
摘要:
"Presents information on simple machines with a focus on pulleys. Explains what a pulley is, how pulleys work, and includes examples of past and present uses. Intended for third to fifth grade students".
出版日期范围:
2013
2013,
2009
SERIES_EPSB:
一般注释:
Includes index.
内容:
What is a pulley? -- Push and pull -- Uplifting machines -- Foiled by friction -- Single pulleys -- Pulling together -- History on the ropes -- Gaining an advantage -- Surfing simple machines -- Science in action -- What have you learned?
主题词汇:
ISBN:
9781621274261
9781621274322
出版信息:
New York, N.Y. : AV2 by Weigl, 2013.
