問題導向數位學習在影像論斷學課程之應用

Purpose: An attempt to incorporate problem-based learning (PBL) with subject-based learning (SBL) in implementing a diagnostic radiology curriculumin a large class was carried out through a web-based approach (problem-based electronic learning, PBeL) in our school. The aim of this study was to assess the outcomes of using the web tool as a solution for large-class PBL implementation. Methods: Between February and June 2002,154 fourth-year students were required to participate in a small-group learning activity in the diagnostic radiology curriculum. All students were divided into 15 groups; a peer facilitator was elected in each group. Online discussion forums (MyTMU [website] URL:http://my.tmu.edu.tw) were available for communication between group members, with other group sand with the tutor. Members of each group were required to discuss and solve a specific medical problem assigned by the tutor on the web site; the group facilitator was then required to present the process of solution in the class after a full discussion on the web with their group members. Finally, 154 anonymous surveys were distributed in the last class after the 20 weeks of the curricular time frame. The questionnaires used a Likert-type scale along with open-ended-ed comments. Results were analyzed by SPSS 11.0 for Windows. Results: 152 surveys were collected. These showed that 81.6% of students were interested in the small-group discussion activities. Interest in the diagnostic radiology course changed from 57.9% before to 71.1% after the PBeL implementation. Some students (34.2%) complained of overload: 36.8% and 43.4% of students spent＜2 and 2-4 hours a week in this course, respectively. Conclusion: Most students were satisfied with the PBeL. The results also showed high motivation to join group discussion. Workload remained a major concern of the students. PBeL with SBL curricula can be successfully implemented in a large class.