The purpose of this study is to study children's communication during educational activity. This study adds to the previous research knowledge of how children's communication appears during an educational activity that includes corporate games. Good knowledge of children's communication is important for preschool teachers. The curriculum contains many goals to fulfill and all children are different and have different conditions. The study is based on an intersubjective perspective and a communicative approach. These mean that children's communication is governed by the norms, values and expectations children have in social interaction. Even how much they understand of what is said govern their communication. Children's communication also depends on the extent to which the self has developed. The study shows that the three children involved in the study have different expressions. The verbal communication is greatest when the game contains recognizable images. The interest in activity is also increasing due to recognizable images. The study shows that the educator is important for the children's communication and interest in the activity.