A list of all the Leapfrog products & books would have been helpful. After buying Leappad - I had to spend too much research time to figure out the system -like a whole 9 hours of research of various books, subjects - math, reading, geography, science, spanish, music - as in notes and sounds, -SIMPLY ASTOUNDING Invention! LeapFrog® 100 Animals Book™ / Imagier mes 100 animaux - Walmart Exclusive - Bilingual EN/FR (CA Edition) 18+ months . 0 Reviews. Price ... Touch the stylus to words and pictures on each page of LeapStart ® books for fun audio responses and on-screen animations that practice learning the basics of reading, math, science and more. The LeapStart ® 3D system is compatible with all LeapStart ® books and features on-screen animations (books sold separately).