7Roth W M, Mcginn M K, Bowen G M. How prepared are preservice teachers to teach scientific inquiry? Levels of performance in scientific representation practices[J]. Journal of Science Teacher Education, 1997,(1):25-48.
8Shulman L S. Knowledge and teaching: foundations of the new reform [J]. Harvard Educational Review,1987, 57 (1) : 1-22.
9Westerlund J F, Garcia D M, et al. Summer scientific research for teachers: the experience and its effect [J].Journal of Science Teacher Education, 2002, 13 (1):63-83.
10Shulman L S. Educational Researcher, 1986, 15 (2) : 4--14.
