In con-
1http://www.blackboard.com
hal-00588757, version 1 - 10 May 2011
Author manuscript, published in "17th International World Wide Web Conference, Beijing : China (2008)"
trast, Intelligent Tutoring Systems (ITS) are associated with
cognitive theories of learning: an ITS usually implements
user-adaptive teaching based on a cognitive theory of the
mind [23], such as the Pact-tutors building on Anderson's
ACT-* theory [4, 5].
Obviously, such a classication is very broad and does not
capture the eld of TEL in all details (e.g. ActiveMath
[25] is a Web-based learning environment based on constructivist
paradigms), but the relevant point is that one often
observes that technical characteristics lead to specic pedagogical
characteristics. Thus, it is important to analyze the
technological basics underlying Web 2.0.