Elementary concept are gradually entering the active lexicon of preschool children. Their appearance is motivated by the expansion of the child’s cognitive horizon in the process of learning about the material world and human relationships. It is important to note that for children of this age are available for learning primarily subject concepts, for which the essential feature is most often the purpose of the subject. Didactic games are of paramount importance for mastering elementary concepts or, in other words, for understanding the generalizing meaning of words in preschool age. They find wide application, both in the pedagogical situation in Bulgarian language and literature, and in the additional forms of pedagogical interaction. In the present study we focus on the application of didactic games as game techniques. It is the game techniques that are most widely used in situation to enrich children’s lexicon. They, in turn, are realized in three main directions: Enriching the lexicon with words meaning names of objects; Enriching the lexicon with words meaning qualities, properties, peculiarities and relations of the objects of reality; Enriching the lexicon with generalizing words meaning elementary concepts. Game techniques have a leading rile in pedagogical situation to enrich children’s lexicon. However, in addition to them, they are widely used in situation in other educational areas. For their full implementation it is important for the teacher to motivate the children to take an active part by choosing them at random (throwing dice, counting, etc.) and inserting a competitive element between the participants. [ABSTRACT FROM AUTHOR]