This book is meant for children from six to twelve months old. At this age, babies are responding to words and actions. They're actively listening and the more they hear, the sooner they will be able to form their own words. Participatory games are important at this level. Lift-the-flap books (effectively, the game of peek-a-boo in a book) help children recognise objects and develop object permanence. The books are chunky, with easy-to-turn foam-filled pages. Age-appropriate toys are included, like a teether or a button to push that responds with "woof" or "meow."With every lift of the six over sized flaps, babies get to show off their understanding of words and actions - and expand their memory. This book encourages small children to get physical by imitating the behaviour of the baby on the page: "When Daddy leaves for work, baby waves bye-bye. When Grandma and Grandpa leave, baby throws a kiss."