题名:
Wheels and axles
PERSONAL_AUTHOR_EPSB:
摘要:
"Presents information on simple machines with a focus on wheels and axles. Explains what wheels and axles are, how wheels and axles work, and includes examples of past and present uses. Intended for third to fifth grade students".
出版日期范围:
2013
SERIES_EPSB:
物理描述:
24 pages : color illustrations ; 27 cm.
一般注释:
Includes index.
内容:
What is a wheel? -- Wheels in time -- What is an axle? -- Rolling forward -- Modern wheels -- A wheel with teeth -- The future of wheels -- Gaining an advantage -- Surfing simple machines -- Science in action -- What have you learned?.
ISBN:
9781621274292
9781621274353
出版信息:
New York, N.Y. : AV2 by Weigl, 2013.
©2014.
