LeapPad interactive books and cartridges engage children in activities that develop vocabulary, spelling and phonics awareness. Each book is packed with engaging activities, games, stories and facts that make reading and learning more enjoyable. Join Leap, Tad and Lily on an alphabet discovery in "I Know My ABCs." When you touch the book with the My First LeapPad magic pen, you"ll see and hear things that start with letters from A to Z, like ants, jelly beans, zebras and everything in between. Note:For use ONLY with the "My First LeapPad" Learning System (sold separately). NOT COMPATIBLE with the "LeapPad" or "LeapPad Pro" Learning Systems.