Niwat SrisawasdiSattarat SrikaseePatcharin Panjabureeพัชรินทร์ ปัญจบุรีKhon Kaen University. Faculty of EducationMahidol University. Institute for Innovative Learning2015-11-302018-02-212015-11-302018-02-2120129789810746506https://repository.li.mahidol.ac.th/handle/20.500.14594/8763Workshop proceedings of the 20th International Conference on Computers in Education ICCE 2012. In Proceeding from the 20th International Conference on Computers in Education 2012. Asia-Pacific Society for Computers in Education, Singapore, page 44-50This paper describes the use of student personalized conceptual profile, which is learning problem of the concept, in a constructivist web-based learning system. Such learning problems, which are diagnosed by basing up on a Fuzzy membership function, serve as a guideline to planning learning suggestions to individual students. Based on such learning suggestions, the constructivist web-based learning system handled the learning material in a useful, flexible and individualized way to students. The students, therefore, are provided meaningful personalized learning material, encouraged in searching conceptual knowledge, opened an opportunity in constructing the conceptual knowledge by oneself and collaboration in group learning resulting in improvement of learning achievement.engMahidol UniversityWeb-based learning environmentConstructivist learningDiagnostic systemTestingLearning problemProceeding ArticleAsia-Pacific Society for Computers in Education