The canvas of science education needs to be viewed in its totality to prevent the confounding of some basic issues and to enable us to evaluate the fads and fashions in educational practice. Policies and processes in education are tacitly shaped by theories in the humanities and social sciences. Inadequate understanding of these theories, or the lack of attention to uncalled-for implications of their practical import, takes education in undesirable directions. To be a good science teacher has never been easy. The teacher is a master of knowledge in science. But that is not all. She is equally committed to the principles governing the practice and communication of science.