I made this purchase for the son of a friend who was in high school difficulties with global method which most of these young students school failure hey Well believe me if you like it was a question of repetition because reading the writing was poor: hey well he passes ce1 .these books are well illustrated and easy and simple to understand and the child I advise taking taste this purchase to all parents whose children are in trouble with this comprehensive approach that puts these young children failing at school plus they are not expensive I oeux vius sure you do not regret your purchase