Screws
题名:
Screws
PERSONAL_AUTHOR_EPSB:
摘要:
"Presents information on simple machines with a focus on screws. Explains what a screw is, how screws work, and includes examples of past and present uses. Intended for third to fifth grade students".
出版日期范围:
2013,
2009
SERIES_EPSB:
物理描述:
24 p. : col. ill. ; 27 cm.
内容:
What is a screw? -- Sharp threads -- Pushing ahead -- Screwy gears -- Nuts and bolts -- Drilling bits -- Early screws -- Gaining an advantage -- Surfing simple machines -- Science in action -- What have you learned?
主题词汇:
ISBN:
9781621274278
9781621274339
出版信息:
New York : AV2 by Weigl, 2013.
©2013.
