Thousands of science questions engage your child in learning fun. This iQuest expansion cartridge contains chapter material based on 24 textbooks used in the classroom. Kids pop the cartridge into the iQuest handheld and then follow three easy steps: Scroll to find a textbook. Select a chapter to study. Play two fast-paced quiz games - complete with audio, animations and scores - to master the chapter material. This product works with the iQuest Handheld (item number LFC40125, sold separately).