Use the LeapReader Reading and Writing System to bring this book and 15 interactive dinosaur cards to life! Dinosaur sizes, habitats, key defenses and more are woven into a compelling story that helps children understand and remember the facts. Study cool tools & develop early science skills. Discover what they liked to eat, when they lived and more! Get an early introduction to paleontology and fossil classification. Explore the prehistoric time line, from the Triassic to Cretaceous periods. Become a dinosaur expert with 15 interactive playing cards. The Tag System helps children develop and strengthen critical reading skills, and the Learn through Reading series is designed to help them apply those skills to explore topics like science, geography, writing and more. The LeapReader/Tag Learn to Read System library features 60+ interactive books, puzzles, maps and more. Parents can connect the device to the online LeapFrog Learning Path to see what their child is playing and learning. Appropriate for children ages 5 to 8 years. For use with the LeapReader and Tag Reader pen only. LeapReader or Tag Reader pen is required and sold separatel.