Reusing web learning portfolios by case-based reasoning technology to scaffold problem solving

This study attempted to reuse the web learning portfolios to scaffold problem solving for activating students´ Zone of Proximal Development. First, we analyzed cases from students´ learning portfolios for getting case knowledge and student ability, and then used case based reasoning technology for recommending cases to students. After students referred these cases, we adopted data mining technology and issue-based information system to analyze the match model between students and cases. Finally, we constructed an online case based learning system, which could retrieve and reuse the fitting cases to effectively scaffold problem solving on student learning process.