In Big Rigs, early readers will learn about the different types of big rigs truckers drive. Vibrant, full-color photos and carefully leveled text will engage young readers as they discover how these large trucks deliver goods we use every day. A labeled diagram helps readers identify different parts of a big rig, while a picture glossary reinforces new vocabulary. Children can learn more about big rigs online using our safe search engine that provides relevant, age-appropriate websites. Big Rigs also features reading tips for teachers and parents, a table of contents, and an index. Big Rigs is part of the Machines at Work series.