The development of children's drawings intrigued researchers in the 20th century. As a field that had not been explored and documented until then, numerous authors now devote attention to it due to the growing understanding of a child's emotional life, personality, and overall development. A child's drawing activity is often explained merely as a motor activity; however, various authors believe that processes occur in the child's consciousness that help them understand the world around them. Researchers compared children's works and established developmental patterns in children's drawings that are characteristic of all children worldwide. The aim of this paper was to observe and study children aged one to three years in the activity of artistic expression in order to notice their spontaneous and uninterrupted artistic expression and to identify when turning points occur in the phases of drawing development. The research focused on the phase of primary symbols, considering that few studies and works have been dedicated solely to this area. The research was conducted in a city kindergarten in Istria County, where a mixed nursery group of twelve enrolled children participated during the 2022/2023 academic year. During the research, 127 children's works were collected, while 60 works were analyzed and presented in this paper.