5Hill, Janette R., Michael J. Hannafin. Cognitive Strategies and Learning from the World Wide Weh. Educational Technology Research & Development [DB/OL], 1997, (4) : 37 --64.
7Chanchai Singhanayok,Simon Hooper. The effects of cooperative learning and learner control on students’ achievement, option selections, and attitudes[J] 1998,Educational Technology Research and Development(2):17~36
8Janette R. Hill,Michael J. Hannafin. Cognitive strategies and learning from the world wide web[J] 1997,Educational Technology Research and Development(4):37~64