Big machines at work

Simple text describes street cleaning machines, what they do and how they work.

"Smash! A massive bulldozer flattens a building! Learn more about how bulldozers move over any surface, and find out what they are used for. Additional features to aid comprehension include a table of contents, informative sidebars and captions, an activity, critical-thinking questions, sources for further research, a phonetic glossary, an index, and an introduction to the author"--

Whirr! A concrete mixer's drum spins round and round! Learn more about why these big machines never stop moving.

Buckets, booms, and backhoes are just a few of the cool parts on these interesting machines. Learn more about diggers of all sizes inside! -- Publisher's description.

How do you steer a fire truck? Are all fire trucks alike? Get the basics on these very important rescue machines! --Publisher's description.

Simple text and photographs describe tow trucks, their parts, and their jobs.