My First LeapPad Book: Once Upon a Rhyme 20 Favorite Rhymes, Beginning Phonics, Rhyming Words New Vocabulary Words, Story Comprehension, Character Comprehension Side 1 - Enjoy 20 of your favorite rhymes with Leap, Tad and Lily! Side 2 - lay over 25 games to learn letters and letter sounds, vocabulary and more! Works with My First LeapPad learning system only. Does not work with LeapPad, LeapPad Pro or LeapPad Advantage Systems.