This informative book introduces young readers to pulleys, describing how they work, how they help people do jobs, and how they are used for fun. The book also includes a "That’s Amazing!" special feature, several "Did You Know?" facts, a table of contents, quiz questions, a glossary, additional resources, and an index. This Focus Readers title is at the Pioneer level, aligned to reading levels of grades 1-2 and interest levels of grades 1-3.