Real events and historical fact can be mentioned in children’s literature but the use of fantastic makes persuasion of plot easier and more interesting. Fantastic elements make books for kids more picturesque and multi-sided. On the examples of “Tom’s Midnight Garden” by Philippa Pearce, “Roll of Thunder, Hear my Cry” by Mildred D. Taylor and “Harry Potter and Philosopher’s Stone” by J. Rowling, we’ll consider the use of realism and the fantastic in each book.The authors discuss the problem of adolescence through such frameworks as self-identity evoking, social agency and subjectivity in a certain cultural sphere. The authors use different tools and methods in order to widen their readers’ audience such as the symbolical representation of reality and space, metamorphosis, time-slip, ghosts, an apparition of a living person, transparency and others. With the help of fantastic tools, authors can endow their heroes with incredible, supernatural gifts that exist next to normal real life. We get acquainted with fantastic realism, which is the best didactic kind of literature. As we shall see, in spite of magical elements and fantastic processes, the authors want in their books to bring to young readers deep and profound thoughts and ideas. The modern world requires subjectivity and strength even from the youngest representatives of the human race.“Tom’s Midnight Garden” by Philippa Pearce is a literary masterpiece. Unreality and metamorphosis lead us into the world of mystery. Children consciousness is explored. Though this book refers to children’s literature, not every child can grasp the main idea of it. The main idea is in time transient and human mind metamorphosis. Tom, the main hero of the book, with the help of a magic clock discovers a new world and mysteries, which require rich imagination and experience.“Roll of Thunder, Hear my Cry” by Mildred D. Taylor is an outstanding piece of literature work.