1Harland T. Vygotsky's Zone of Proximal Development and Problem-based Learning : Linking a theoretical concept with prac- tice through action research [ J ]. Teaching in Higher Education ,2003,8 (2) :263.
2Butler A C, Roediger, H L I. Testing improves long-term retention in a simulated classroom setting[ J ]. European Journal of Cognitive Psychology ,2007,19 ( 4 ) : 514-527.
3Minderhout V, Loertscher J. Lecture-free biochemistry [ J ]. Biochemistry and Molecular Biology Education, 2007,35 ( 3 ) : 178.
4Francom G, Bybee D, Wolfersberger M, et al. Biology IO0:A task-centered, peer-interactive redesign[ J]. Tech Trends, 2009,53 ( 3 ).
5Reigeluth C M. The elaboration theory : Guidance for scope and sequencing decisions [ C ]//Reigeluth C. M. Instructional- design Theories and Models:A New Paradigm of Instructional Theory, Vol. II. Mahwah, NJ: Lawrence Erlbaum Associates Publishers, 1999 : 442.
6Merrill M D. A task-centered instructional strategy[ J ]. Journal of Research on Technology in Education,2007,40 ( 1 ).
7Fortier G. The wolf,the moose, and the fir tree: Who controls whom on Isle Royale? A case study of trophic interactions [ EB/OL ]. [ 2012 - 03 - 03 ]. http ://ublib. buffalo, edu/libraries/projects/cases/Isle, html.
8Van Merrignboer J J G,Kirschner P A. Ten Steps to Complex Learning-A Systematic Approach to Four-component Instruc- tional Design [ M ]. Mahwah, NJ : Lawrence Erlbaum Associates Publishers,2007.
9Schnieder P. The Case of Desiree's Baby :The genetics and evolution of human skin color[ EB/OL]. [ 2012 -04 - 13 ]. ht- tp ://www. sciencecases, org/skin_color/skin color, asp.
10Leander C, Husky J. Those old Kentucky blues: An interrupted case study[ EB/OL]. [ 2012 -04 -13 ]. http://www, sci- encecases, org/blue_people/blue_people, asp.
