7Jensen, P. A. ,and Moore, R. (2008). Students' behaviors, grades &perceptions in an introductory biology course [ J ]. Am. Biol. Teach. 2008,70:483 - 487.
8Preszler, R. W. Replacing lecture with peer - led workshops im- proves student learning [ J ] . CBE Life Sci. Educ. 2009, 6:182-192.
9Smith, M. K. , Wood, W. B, Adams, W. K, Wieman, C, Knight, J. K, Guild, N. , and Su, T. T. Why peer discussion improves student performance on in - class concept questions [ J ]. Science , 2009,323 : 122 - 124.
10Vygotsky, L. S. Mind in Society: The Development of Higher Psychological Processes [M]. Cambridge: Har- vard University Press, 1978.