共 8 条
[2]
Casanova J, 1991, EDUCOM SPR, P31
[3]
FOUNTAIN KR, IN PRESS J CHEM ED
[4]
FOUNTAIN KR, 1994, IN PRESS J CHEM NOV
[5]
Johnson D.W., 1991, Cooperation in the classroom
[6]
JOHNSON PN, 1989, MENTAL MODELS, P488
[7]
Solomons T. W. G., 1992, ORGANIC CHEM
[8]
1994, THE TECHNICAL HORIZO, V21, P59