Abstract
The authors of this paper have conducted research into Web-based collaborative learning, using a bulletin board system enhanced with a knowledge map we created, known as 'NakSun'. The knowledge map was demonstrated to be useful for collaborative learning, and was further improved when combined with feedback based on formative evaluation. This also had the intended effect of increasing the enthusiasm for learning and discussion among students. As experts of pedagogy evaluated the notes submitted by students favorably, nodes on the knowledge map increased in size to reflect this. Experimental subjects of junior high school students and primary school PC club students undertook collaborative learning sessions in three mathematics classes and two PC club activities, respectively. The results showed that after formative evaluation, the number of words per note and the importance of notes increased in the primary school groups, and the junior high school group frequently referred to notes evaluated favorably by the evaluator. For both groups, learner's incentive for learning was increased. This research was placed as research on educational practices and had been conducted through discussing the methodology.
