Dgs 4 year old set consists of 3 books. Each book consists of 156 pages. ·The order of the books should never be perceived as a ranking of difficulty. In each book, easy and difficult exercises that children can do at their age are listed together. · Difficult exercises are not given one after another, so that children do not get bored and give up on the book. ·There are sticker exercises presented along with age-appropriate exercises in each book. Sticker exercises should be applied to children through a reward system. ·As we solve the attention exercises, the next sticker exercise should be done so that our children can study with pleasure.