6McKinney, C. W. A Comparison of the Effects of A Definition, Examples, and Nonexamples on Student Acquisition of the Concept of "Transfer Propaganda" [J]. Social Education, 1985, January: 66-70.
7Atkinson, R. K. , Derry, S. J. , Renkl. A. ,& Wortham, D. Learning from Examples: Instructional Principles from the Worked Examples Research [J]. Review of Educational Research, 2000, 70 (2) : 181-214.
8Renkl, A. , Stark, R. , Gruber, H. ,& Mandl, H. Learning from Worked-out Examples: The Effects of Example Variability and Elicited Self-explanations [J]. Contemporary Educational Psychology, 1998, 23:90-108.
9Sweller, J. ,& Cooper, G. A. The Use of Worked Examples As A Substitute for Problem Solving in Learning Algebra [J]. Cognition and Instruction, 1985, 2:59-89.
10Merrill, M. D. , Tennyson, R. D. ,& Posey, L. O. Teaching Concepts: An Instructional Design Guide[M]. Englewood Cliffs, N.J. : Educational Technology Publications, 1992.
