Section I provides an overview to the framework which guided the original research, and the basic structure of five perspectives on teaching that emerged from that research. Chapter 1 introduces a general model of teaching, with five elements and three relationships. This model formed the backbone of the observations and interviews from which the five perspectives emerged. It is the conceptual framework through which teaching was examined and from which perspectives emerged. Chapter 2 looks at indicators of commitment that helped define perspectives on teaching: beliefs, intentions and actions (including assessment and teaching strategies). Chapter 3 introduces each perspective as a complex lens through which teachers view the elements and relationships within the general model of teaching.