Screws

Screws

by Kay Manolis
     
 

Editorial Reviews

Children's Literature - Carrie Hane Hung
Simple machines help to make work easier for people. Find out how a screw helps to reduce the amount of effort needed for a particular task. Learn how a screw works by reading the description of its parts. There are labeled diagrams illustrating the parts of the screw along with the differences of the pitch. Color photographs display the different types of screws like the carpenter's tool, a press that grinds items, and a snowblower. The final chapter briefly demonstrates how screws are part of more complex machines. The bold print words in the main text are located in the glossary. The chapters are not lengthy in terms of pages; nevertheless, there is sufficient text on a page. This informational text provides a clear introduction to the simple machine, the screw; however, teachers may wish supplement the text with hands on activities to help support the concept and principles of simple machines. For additional information, readers may find the list of books and web site to be helpful. This book is part of the "Blastoff! Readers: Simple Machines" series which includes levers, pulleys, wedges, and a few more simple machines. The text is rated as level 4 which indicates more text on the page, variety of sentence structures, and more content vocabulary. Reviewer: Carrie Hane Hung

Product Details

ISBN-13:
9781600143229
Publisher:
Bellwether Media
Publication date:
08/01/2009
Pages:
24
Product dimensions:
6.70(w) x 9.10(h) x 0.30(d)
Age Range:
5 - 9 Years

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