Grasshoppers have very strong legs that allow them to jump great distances. They are known for the chirping sound they make by rubbing their legs and wings together. Learn more about these amazing animals in Grasshoppers, a Fascinating Insects book. Each AV² media enhanced book is a unique combination of a printed book and exciting online content that brings the book to life. Readers can access embedded weblinks, audio and video clips, activities, and other features, such as a slide show, a matching word activity, and a quiz.