LeapFrog Explorer Learning Game: I SPY Super Challenger (works with LeapPad & Leapster Explorer) Divide groups of objects into sets with equal values Find the correct objects to solve the rhyming riddles! Sort and line up matching objects Teaches logic and reasoning, memory and problem-solving skills; Appropriate for children ages 5 to 9 years (grades K to 4) Works with all LeapPad learning tablets, LeapsterGS and Leapster Explorer (sold separately); Internet connection may be required for cartridge