6Stokes,S.,Mackinnon,M.,Whitehill,T.Students' experiences of PBL:Journal and Questionnaire Analysis[J].Journal of University Didactics, 1997,21(1):161-179.
7Rao S.P,,Decarlo S.E.Active learning of respiratory physiology improves performance on respiratory physiology examinations[J].Advances in Physiology Education,2001,(25):127-133.
8Trevena,L.J.Clarke,R.M.Self-directed learning in population heahh:A clinically relevant approach for medical students[J].American Journal of Preventive medicine,2002,(22):59-65.
9Margetson,D.Current educational reform and the significance of problem-based learning[J].Studies in Higher Education,1994,19(l):5-19.
10Schmidt,H.G., & Mouat,J.H.C.Process that shape small group tutorial learning:A review of research[Z].San Diego,CA:Annual Meeting of the American Educational Research Association,1998.