6Winnips, J. C., Scaffolding by Design: A Model for WWW-Based Learner Support, P39. 被引量:1
7"Providing assistance to students on an as-needed basis with fading of assistance as their competence increase", Winnips, J. C., Scaffolding by Design: A Model for WWW-Based Learner Support, P40. 被引量:1
8Pierce J. Howard (2001), Visual TooLs for Knowledge Workers: Aids for Critical Thinking, CentACS. 被引量:1
9EDUCATION CLEARINGHOUSE REVIEW CENTER, Timeliner5.0,http://www.educationclearinghouse.org/reviews/03-19-07.html. 被引量:1