Three considerations form the basis of an ecological theory of teaching: activity structures, student participation styles, and social cognitive development. To explore this theory scholars met in seminars, each bringing the concepts and perspectives of his discipline or area of inquiry. This report contains a synthesis of responses from twelve seminar members. They address the topics of classroom behaviors and participation, social dynamics within the classroom, activity structures and teacher-pupil interactions, and observation and testing of the ecological theory in classroom situations. (JD)