In developing an ecological theory of teaching, the classroom is viewed as a sociological unit. The unit of interest was the teacher-student learning group. The basic question explored was: What is the relationship between human interactions and the physical and social context of the group. Teams of scholars met in seminars, each member bringing the concepts and perspectives of his respective discipline or area of inquiry. In this "bridging report," three researchers combined their different approaches to contibute to an ecological theory of teaching. The first approached the subject from the perspective of child development, the second from an ethnographic viewpoint and the third from a sociological perspective. (JD)