year of pub­li­ca­ti­onISBNauthor(s)title
2002978-1-58605-449-6leap frogLEAP FROG SCHOOL HOUSE SKILL CARDS GRADE 4 READING (understanding main ideas side A)
  ''978-1-58605-735-0Leapfrog EnterprisesQuantum Pad Smart Guide to 3rd Grade(Master Fundamental Skills) (FUN-damentals Series, Interactive)
  ''978-1-58605-736-7LeapFrog EnterprisesSmart Guide to 4th Grade (Quantum Pad Interactive Book)
  ''978-1-58605-737-4Leap FrogSmart Guide to 5th Grade (Quantum Pad Fun-damental Series)
  ''978-1-58605-794-7Leapfrog EnterprisesQuantum Pad World Geography (3rd-5th Grade) (Above & Beyond Series)
978-1-58605-825-8Quantum Pad Learning System Scholastic's The Magic School Bus Lost in the Solar System (Above and Beyond Series)