Presents suggestions for creating a classroom environment where young children's thinking and reasoning processes are supported. Discusses organizing time blocks for predictability and flexibility and organizing the physical space, including providing access to work spaces and access to materials. (KB)

To evaluate the effectiveness of an engineered classroom design, 54 educationally handicapped children were placed in six classrooms, each with a teacher and an aide. Each classroom was set up with three major centers: mastery-achievement, exploratory-social, and attention-response-order. Children were assigned tasks at centers in keeping with…