This exploratory and experimental research aims to describe randomness expressed in 5 to 6-year-old children's drawings. This study considers a six-day activity developed in 5 Chilean kindergartens, with a total of 142 participants. The activity on the mosquito's flight considered the corporal movements to generate the idea of randomness in children. The children drew the mosquito flight and described the flight. We qualitatively analyzed and categorized the children's drawings and verbal descriptions, dividing them into static or dynamic representations. A second grouping was established in the dynamic drawings: in one direction and random. The third division considers only random drawings: (1) uncertain walk, (2) possible walk, and (3) casual walk. The results show that children in this stage of development can express in their drawings some of the three basic notions of randomness. The children expressed randomness through random stops, circular paths, and arrows to mark positions or make decision possibilities of the mosquito.