It really disturbed me. I talked to the pediatrician about it and he seemed to think it was normal. You said that it wasn't normal for a child to teach other children to masturbate or masturbate others. She did both in this instance. I felt like it was my fault.
Masturbation is quite common in preschool and kindergarten children.
Curiosity and awareness of differences between the sexes also increases during this time. So, exploration of their own and each others bodies is a common thing both in the preschool and kindergarten set. By the time children reach age six, masturbation in public becomes less common primarily because this is the time when awareness of social pressures become more prominent. However, this by no means implies that age six is a magic number in which inhibition of acting on this curiosity occurs. Rather, it is simply a time when the process of social pressure takes more of a noticeable role.