Abstract
In this thesis I employ a constructivist epistemological stance (principally influenced by that due to George Kelly) to critically examine the curricular response to contemporary notions of truth, objectivity and knowledge. I take science education (at both Secondary and Tertiary levels) as ray special reference within the education system. An important part of my work explores students' and teachers' personal meanings of science and scientific method, i. e. alternative conceptions of science, and I see it as contributing to the growing body of research concerned with alternative conceptions in science: the 'Alternative Conceptions Movement' (ACM) in educational research. To help articulate ray views on these matters I use an augmented version of a framework or model, developed by my immediate colleagues, for conceptualising cognitive aspects of science education and the transformation of scientific knowledge. My version of this framework features components under the following main headings: 'Scientists'-Science', 'Philosophers'-Science', 'Curricular-Science', 'Teachers'-Science', 'Students'-Science', and 'Childrens'-Science'. I argue that, suitably augmented and interpreted, Kelly's theory is capable of rationally integrating existing ACM research, together with my own. My classroom research uses a number of complementary investigative methods, some of them novel. These may be grouped under the following three headings: - interviews - lesson observations - written exercises I present an outline of a theory of teaching which is compatible with ACM research and make recommendations for future science teaching and research. N. B. To avoid an insidious (male) sexism and 'his/her' formulations which I find tedious, I shall use plural forms throughout this thesis, e.g. their, themself.