Summarizes changes in student achievement and behavior (cross-racial selections) due to the adoption of an activity-based elementary education program (Harcourt Brace Jovanovich Classroom Laboratories and Elementary Science Study units) in Springfield, Massachusetts. Emphasis of hands-on experience in mixed-race groups was effective in student…

The program described in this paper was designed to address two sets of questions, one concerning the nature of classroom teaching and learning of science in secondary schools and the other concerning their mechanisms. The program consisted of four phases: (1) "Establishment" (emphasizing trust between teachers and consultants); (2)…

This paper reports a study directed toward educational improvement through individual and group change. It is a 3-year naturalistic case study centering on 9 experienced science teachers, 13 novice science teachers, 64 secondary science students, and 4 researchers. The three aims of this study are to know more about: (1) what it is to be a teacher…