"smart" babies, these books teach them things they learn as they start life. when you are browsing the web site when you click on a book it gives you all important information any parent would like to see. it tells you the material of the book, the number of pages and the age range of the book among other things. i thought it was a great way to shop because when i was looking for a target age range the fact that it said twelve to eighteen months let me know that was exactly what i was looking for. first we read the book begin smart all gone, ages 12-18 