This is a very cute book. Pete is wearing his favorite shirt, that has four "groovy" buttons. Pete doesn't cry when he looses a button, he just keeps on singing his song. This book has some repetition in it so the children can predict what the next page is going to say. Have the students sing along with the book to keep them engaged. This book could also be used to help with subtraction. "Pete has 4 buttons, but he looses one, how many does he have left?" I think the intended audience/grade level for this book is anywhere from Kindergarten to 2nd grade, depending on how you use it.