This book is really great! I read both my 4 year old son to my students. In English I have used a lot when I had ce1, but it is adaptable to all levels. Children love it, and it's ideal for interdisciplinarity: discover the world with the transformation of the caterpillar to butterfly, days of the week (for cycle 3 can also think of the origin of words as in French and English), the colors, the food, the numbers ... There are also many video that appeals to children and a lot of resources on the net !!!