1) Interactive-engagement methods work:
A six-thousand-student survey of mechanics
test data for introductory physics courses Richard R. Hake Department of Physics, Indiana University, Bloomington, Indiana 47405 American Journal of Physics, 1997.
It is possible to test interactive
web material:
2) Evaluation of Physlet-Based Materials
Anne J Cox, Eckerd College,
coxaj@eckerd.edu , Mario Belloni, Wolfgang Christian. Winter meeting of the American Physical Society, 2005.
3) Nicoll and Brooks Journal of Sci Ed and Tech, Vol 13, No 1, March 2004, p. 81-88.