1. Layton, David (1973) Science for the People: The Origins of the School Science Curriculum in England, London: Allen and Unwin, p. 174.
2. Ramsey, G. A. (1975) `Science Teaching as an Instructional System’, in P. L. Gardner (ed.), The Structure of Science Education, Hawthorn: Longman Australia, p. 96.
3. Ibid.,p. 97.
4. Layton, op. cit.,p. 176.
5. Butler, J. E. (1977) `Radical Philosophy and History of Science’, Australian Science Teachers Journal 23(2), 40. It should be noted that Butler is critical of the view represented by this quotation and the one which immediately follows.