Introduction to the magical animal world: a set of classic popular science works that have influenced the growth of generations such as Obama and Clinton; Children in more than 50 countries have the same choice; American national publishing award-winning books; The only encyclopedia published by Warren Buffett is How &；; Why "American classic encyclopedia of children's knowledge!

According to children's reading characteristics, this series of books introduces animals, plants, the earth, the universe, the human body, art, world human geography and other aspects with exquisite pictures and easy-to-understand language, which is especially suitable for children aged 7 ~ 10 to read independently and parents and children aged 4 ~ 7 to read.

Today's children are not satisfied with knowing all the scientific principles, and the era of mechanically instilling knowledge into children should be over. The rich interactive sections of "try it" and "know it all" in this series encourage children to witness, explore and experience with their own hands, so that children can know not only "what" but also "why", which is both informative and interesting. Believe how&; "Why" American classic encyclopedia of children's knowledge will capture children's hearts with attractive content and stimulate their enthusiasm for exploring scientific knowledge.

The first volume of How&Why American Classic Encyclopedia of Children's Knowledge (seven volumes) includes: the magical animal world, the wonderful plant world, how they work, what happened, the earth code, the exploration of the universe and interesting shapes and numbers.