The present study aimed to see whether peer interactions, which form young children's psychological environments
in childcare centers, can be developed in a positive direction by a structured sand play program. In order to promote
peer interactions, this study designed and executed a group sand play program, and observed changes in peer
interactions among the young children participating in the program. According to the results of this study, significant
positive changes were observed in the child participants' peer interactions, suggesting the effects of the group sand
play program. In the current societal situation where demands for quality improvement in childcare services are
increasing, the present study examined the possibility of group sand play as a way to enhance sociability of young
children in childcare centers. We expect the development and application of various sand play programs that improve
children's sociability, produce psychologically therapeutic effects, and enable an improvement in childcare service quality.