This online exclusive 4-in-1 Pre-Kindergarten Expansion Bundle Pack comes with four expansion packs intended for ages 2-4: Numbers Get Ready for Preschool; Nursery Rhymes; and Animals, Bugs & Critters. Each expansion pack includes a cartridge and four colorful double-sided activity pages, which is for use with the VTech Touch & Learn Activity Desk Deluxe and the Explore & Write Activity Desk (each sold separately). Durable cards easily wipe clean and will not tear. Incompatible with the VTech Touch & Learn Activity Desk Expansion pack - Numbers and Shapes: Explore the colorful illustrations while learning counting, number recognition, shapes and colors. Free and guided exploration allows children to learn math the way that works best for them. Battery- None Batteries Required Expansion pack - Get Ready for Preschool: Explore the colorful illustrations while learning instrument sounds, shapes and animals, and listening to the story the Ugly Duckling. This basic, well-rounded curriculum can help prepare children for preschool by showing them a typical classroom and common field trips Expansion pack - Nursery Rhymes: Explore the colorful illustrations while learning rhyming words, vocabulary and basic comprehension while listening to eight classic nursery rhymes. Interact with the songs by pressing buttons and adding instrument sounds Expansion pack - Animals, Bugs and Critters: Explore the colorful illustrations while learning science concepts and animal facts, and listening to a story about the animals in Noah's Ark. Be creative by making their own music using bird sounds