Perfect for introductory grammar lessons! What is a verb? Explore language and discover how to identify verbs and their many forms from the imperative mood to active vs. passive voice to verb phrases. “Heller’s… concept book explicates and celebrates verbs of all kinds, in ebullient verses which themselves sail and soar.”—Publishers Weekly“Graphic play and world play make this an ingenious lesson that no classroom grammarian should miss.”—The Bulletin of the Center for Children’s Books“Children will find it a painless and concise grammar lesson as well as a visual treat… A boon for language arts teachers as well as for all children and adults who love to play with language.”—School Library Journal About the Explore! series: Dedicated to helping children learn a variety of nonfiction subjects, the Explore series uses pitch-perfect rhyming text and brilliantly illustrated images to make learning fun.