LeapFrog Olivia Learning Game (Works with LeapPad Tablets, LeapsterGS, and Leapster Explorer) Do you have the energy to keep up with Olivia Teaches counting, addition and subtraction, number and shape writing and measuring Appropriate for children ages 3 to 5 years (pre-K to K) Works with all LeapPad learning tablets, LeapsterGS and Leapster Explorer (sold separately); Internet connection may be required for cartridge