This thesis discusses the importance of encouraging children's artistic creativity from an early age. The paper is divided into a theoretical and a practical part, and for the purposes of the practical part, two activities were carried out in the kindergarten "Tratinčica" in Zagreb. With the help of professional literature, the theoretical part of the work deals with artistic language and its basic elements, artistic techniques, motifs and themes. It is described in detail how to approach, observe and analyze works of art and to bring to children all the complexity of the visual phenomenon, all the visual elements and appearances of fine art, in a way they can understand. The development of art throughout history is covered, and the artistic direction of Cubism and the life of its founders - Pablo Picasso and Georges Braque are described in more detail. Furthermore, the importance of involving children in art activities from an early age is emphasized because it helps to realize their creative potential. Through research activities, using different materials and techniques, children unconsciously develop visual-spatial intelligence, aesthetic perception, imagination and specific artistic and expressive abilities. The main role in encouraging children's artistic creativity is played by the preschool teacher, because he designs the creative incentives that he will offer to the children. Before planning art activities, the preschool teacher must know children's general and artistic development, and especially their age and individual developmental characteristics. For quality educational work, the preschool teacher should be able to recognize the artistic type of the child and the phase in which he is currently, and know how belonging to a particular artistic type and phase affects his artistic expression and adapt his work accordingly. The educator should provide a wealth of motivational stimuli, encourage free and spontaneous artistic expression, while respecting the interests and possibilities of the children. The use of works of art in educational work is encouraged because they encourage children's aesthetic development and positive attitude towards art as well as their own artistic expression. While, the practical part of the paper describes in detail the art activities carried out and analyzes the children's art works. The goal of both activities was to introduce children to artworks from the Cubist period and to explore how the artworks of Pablo Picasso and Georges Braque will influence their artistic expression.