Appropriate for Grades 1-3 Written by Eva Moore A Magic School Bus Chapter Book About Bats. Join Ms. Frizzle as she takes her class all over the United States looking for bats. The students thought she was batty! But then they found out some really amazing things about bats, like what they eat, where they live, how echolocation works, and lots more bat facts and bat myths. In this book, Ralphie will tell you everything that happened on the trip-the time we learned The Truth About Bats! Soft-cover, 70 pages.