For the little kids, I wanted to do some sort of activity to go along with the same letter that I used for the older kids version. So for these they are either on printer paper size for easy at home printing or you can take it to the copy shop and get it printed. You will need velcro or magnet bits for some of the pages that have pieces to go with it. You can easily attach an envelope to the back and laminate the whole page together then use an exacto knife and "cut" open the envelope to hold the pieces. You can also laminate and use just as table activities instead of a book.