Abstract
Since students discuss by sharing messages written on a BBS (bulletin board system) at a class used information communication technology, the writing skills of messages for BBS are important for students. In this present study, messages written by university students and an instructor on a BBS of the WBT (Web Based Training) System were analyzed qualitatively. The results indicated that it was necessary for students to write messages in accordance with knowledge transforming strategy which was students not only post questions but also provided explanations about why they had questions in order to receive answers to their questions from an instructor. In addition, the results showed that some of the students obtained knowledge transforming strategy with instructions given by an instructor and/or through other students' modeling.
