74 SOCIAL SCIENTIST 70. Olson, J. (1982) 'Dilemmas of enquiry: How teachers cope' ibid., p. 148. 71. Waring, Mary (1979), "The implementation of curriculum change in school science in England and Wales', Eur. J. Sci. Ed. 1, p. 257-75. 72. Brown, S. and Mcintyre, D. (1982) 'Costs and rewards of innovation: Taking account of the teacher's viewpoint', ibid. Oslon (1982), p. 103. 73. Driver, Rosalind (1983), The Pupil as Scientist? Open Univ. Press, p. 9. 74. Young, M.F.D. (1977), 'Curriculum change: Limits and possibilities'. In Society, State and Schooling (eds.) Young, M. and Whitty, G., Palmer Press, p. 248. 75. Ibid. Waring, Mary, p. 270. 76. House, E.R. (ed.) (1973) School Evaluation: The Politics and Process, McCutchan. 77. Ibid, p. 3. 78. Lawton, D. (1980) The Politics of the School Curriculum, Routledge & Kegan Paul, p. 115.