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Screws~tqw~_darksiderg

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INFO
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Title................: Screws
Type.................: Ebook
Reader...............: PDF Reader
Size.................: 5.82 MB
Torrent Hash.........: BCE1C72F881123A27B2343E387A03A774D1A8F1A
Posted by............: ~tqw~

Trackers:
hxxp://tracker.bitreactor.to:2710/announce
hxxp://tracker.thepiratebay.org:80/announce

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CONTENTS
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Synopsis:
This entry in the "Early Bird Physics" textbook series explains what work is,
defines the simple machine under discussion, introduces special terminology
such as fulcrum, friction, or axle, and shows variations on that machine
that make it more complicated. Simple hands-on activities explore some of
the properties of a screw and illustrate ways screws are configured to
increase or decrease the force needed to turn them. A multiracial cast of
children who look to be about nine or ten are photographed in posed
situations to illustrate concepts and most of them look realistic. Diagrams
also help children see where force is applied or what can be altered to make
work easier. An endnote to adults suggests helpful discussion questions and
ways to explore the vocabulary specific to this machine while a bibliography
of other books on the topic and two generic websites suggest further
exploration.

Table Of Contents:
Be a Word Detective 5
Chapter 1 WORK 6
Chapter 2 MACHINES 10
Chapter 3 WHAT IS A SCREW? 14
Chapter 4 HOW SCREWS HELP US 22
Chapter 5 KINDS OF SCREWS 32
A NOTE TO ADULTS On Sharing a Book 44
LEARN MORE ABOUT Simple Machines 45
Glossary 46
Index 47

Product Details:
* ISBN: 0822522225
* ISBN-13: 9780822522225
* Format: Library Binding, 40pp
* Publisher: Lerner Publishing Group
* Pub. Date: September 2001
* Age Range: 7 to 9

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Greetz Fellow UL'ers
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mazuki `jedi Flatline newartriot aXXo KingBen Paulx1 unisonband

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