5L W Trowbridge, R J Bybee, J C Powell. Teaching Secondary School Science [M]. 7thed. Columbus,Ohio: Preentice-Hall Inc. 1996. 207.
6National Research Council. Inquiry and the National Science Education Standards [M]. Washington,D C: National Academy Press, 2000. 34--35.
7Collette A T, Chiappetta E C. Science Instruction in the Middle and Science School [M]. Columbas U S A: Merrill, 1994. 27-47.
8Suchin K. Effect of Research Experience on Teachers'Perceptions of the Nature Science (Science Training) [M]. Unpublished Doctoral Dissertation, University of Minnesota. 1993.
9Abimbola I O. The Relevance of the "New" Philosophy of Science for the Science Curriculum [J].School Science and Mathematics 1983, (3): 181-192.
10Bruner J S. The Process of Education [M]. NewYork: Vintage, 1960. 31.
