3 to 5 meters. According to the query of relevant public information: the scale of kindergartens is relatively small, and the background of the venue is often relatively small, so 3 to 5 meters is more suitable. Kindergarten is a school for pre-school education. According to the "Kindergarten Work Regulations", kindergartens are institutions that provide care and education for preschool children over 3 years old. Kindergarten-age children are generally between 3 and 6 years old.