Children's social patterns are interesting to observe, but what should teachers do with the information? Whether a teacher should intervene, and if so, how, depends on how the children are feeling. If they all seem happy in their roles and are able to resolve conflicts among themselves in their play scenarios, then it is best to stay out of their way. Children who seem obnoxiously bossy may also full of fun ideas, in the give and take of group play, they will learn to also in incorporate the ideas of others. The children who willingly comply with others' ideas, as well those who cheerfully insist on being contrary within the boundaries of the game, are learning how to cooperate to keep a project going. When things are working well, all the children contribute to their joint project and all the children, including the leader, learn to lis-ten to each other's ideas. But what if all is not well in the social structure of the group? What if some children end up as victims or are rejected altogether? What if a child wants to join a group but doesn't know where to begin? What if a child is too aggressive or socially inept to find a comfortable place within a group? What if a child who is still leaning the language that others speak is consistently left out or sidelined? What if a child is cruel to other? Or what if children deliberately or inadvertently express stereo types or hurt others' feelings? In these situations, is essential for the teacher Intervene.