In Bulldozers, young readers will learn how a bulldozer works. Vibrant, full-color photos and carefully leveled text will engage early readers as they discover how operators use bulldozers for construction. A labeled diagram helps readers identify different parts of a bulldozer, while a picture glossary reinforces new vocabulary. Children can learn more about bulldozers online using our safe search engine that provides relevant, age-appropriate websites. Bulldozers also features reading tips for teachers and parents, a table of contents, and an index. Bulldozers is part of the Machines at Work series.