Constructing collaborative learning activities for distance CAL systems

C. K. Chang, Gwo Dong Chen

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


Many existing Computer Assisted Learning (CAL) systems use computer programs to simulate a teacher for individual learning. However, regardless of how good the CAL system is, a student should also interact with learning companions and human teachers. Due to the popularity and ease of access to computer networks and communication tools, network facilities can be incorporated into a CAL system to make it a distance CAL system. To attain an effective learning outcome, a distance CAL system must be able to: define a group learning model; constrain and advise the students to learn according to the model, and have query facilities which provide the teacher with information about what a student has done and learned, and what a student should do next. A rule-based system that is conventionally used cannot sufficiently provide those required functions. This paper suggests why this is the case and how an active database system can achieve those goals.

Original languageEnglish
Pages (from-to)2-15
Number of pages14
JournalJournal of Computer Assisted Learning
Issue number1
StatePublished - 1997


  • Active database
  • Distance CAL
  • Learning activity
  • Production rules
  • Rule-based system


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