Book 4's engagingly illustrated stories include Nelson Went Overboard for Dogs, What a Scare!, A Different Kind of Library, A Birthday to Remember, The Treasure Hunt, and A Wild Ride. Introductory exercises teach word families and vocabulary, while follow-up questions develop students' understanding of the stories and encourage their reasoning abilities. Drawings accompany many of the new words to help students understand the vocabulary. After each story, students can complete illustrations by adding their own drawings. Grade 4.