Research in classrooms must be sensitive to new dimensions of teaching tasks that emerge at the group level. There are at least two tasks that can be identified as being affected by changes in group characteristics. The first task is to set the stage--the teacher must establish the proper context or setting to support academic activities. The…

The author reviews the past few years of experience gained in English schools of mixed-ability teaching in science and makes some personal interpretations of the lessons to be learned from that experience. It is hoped that some of these issues will be of relevance to other countries. (Author/SK)

Many secondary teachers perceive a wide range of studennt ability levels within a class as a constraint on effective teaching and classroom management. This study was conducted to determine which levels of teaching effectiveness, which learning environments, and which classroom management problems were associated with very heterogeneous classes,…