Exciting Beginning Reader When a boy loses his best car under his bed, he discovers a magic trap door that will take him to the past. In this first adventure, the trap door opens into the time of the dinosaurs. In Magic Trapdoor Beginning Readers, short and simple sentences tell an exciting story. Call-out text boxes expand the learning experience with nonfiction text designed for a parent, teacher or older sibling to read. Leveling note: If the story on it's own is read, the book has a 0.9 ATOS level and is ideal for Kindergarten and other beginning readers. When the book is read in its entirety, it has a 4.3 level and is perfect for 3rd-grade readers.