A Rourke Kindergarten Science subscription is based on thirty-nine of Rourke Publishing's non-fiction children's picture books. For each book, there are six activities, including an e-Book, a story-writing activity, a vocabulary game, a comprehension activity, a spelling activity, and more. All the activities are based on the book's content, both text and graphics. Children can even make their own audio version of the book and play it back with their own voice.