DiggersBook - 2010
Young readers learn how these big building machines work and why we use them. Includes activity pages to help readers understand levers, pulleys or ramps, and high-frequency words make for easy-to-read text.
Publisher: Irvine, California :, QEB Publishing,, .
Copyright Date: ©2010
Characteristics: 24 pages :,coloured illustrations ;,28 cm.