Adaptivity in problem-based learning: use of granularity

This paper discusses the limitations of PBL environments and introduces the student adaptivity technology into PBL environments to improve the effectiveness and efficiency of the learning process. A web-based prototype is implemented by using PHP, MySQL and Apache, and uses the accounting as subject domain. With the system, students work on the real world costing calculation problems, and the system evaluates students' performance results on the problems to provide adaptation to the students.