The paper discusses the impact of reading and storytelling on a child's cognitive development. Fairy tales are a great tool in education, they are external factors that help the internal development of the nervous system. A stimulating environment, motivated parents and educators play an important role in the development of children's language discourse. Excessive use of screenplay reduces the level of development that a child reaches according to chronological age. Children's imagination develops by telling stories and fairy tales; children learn about the world around them and understand their own existence. In order for fairy tales to be child’s guidelines, it is mandatory to choose the right story for a certain age group, and the interests and knowledge of children in that group. The narrator who tells the story must be well prepared and possess certain knowledge and competencies, in order to give the child an incentive to change behaviour from within through the development of metaphorical images that become his. In order for a story to be told in an effective way, the narrator must know the story well — it must be a part of him. This paper conceptually defines the story, emphasizes the importance of preparing the narrator, as well as the importance of storytelling for the development of children's language discourse. In the case study chapter, the language progress of a bilingual five-year-old boy over a period of two months is observed, after activities have been carried out that encourage the development of language discourse.