3Good Ideas to Foment Educational Revolution:The Role of Systemic Change in Advancing Situated Learning Constructivsm and Feninist Pedagogy by Alison A Carr David H,Jonassen Mary Ellen Litzinger Rose M,Marra Educational Technology/January-February 1998
3Mayer, R. E., Stiehl, C. C. & Greeno, J. C. 1975. Acquisition of, understanding and skill in relation to subjects preparation and meaningfulness of instruction [J]. Journal of Educational Psychology, 67 (3): 331-350.