Conflict in Sibling Behavior in the Classroom: A Study of the Concrete Operations Stage of Childhood Development for 10 and 11-Year Olds. This paper will discuss the way that children that are 10 and 11 years old deal with siblings in the school environment. By understanding the levels of reaction from a child at this stage of development in their youth, we can understand better how they would behave. By citing some examples, we can show the facts that create the developmental cycles in these children. 3 pgs. bibliography lists 2 sources. Pages: 3 Bibliography: 2 source(s) listed Filename: 10967 Conflict Sibling Behavior.doc Price: 26.85