蒋纪平， 胡金艳， 张义兵
【关 键 词 】：
知识建构； 学习社区； 观点改进； 发展轨迹
Idea improvement is the core of knowledge building. The current research on idea improvement mainly focuses on the visual description of the external network relations of idea development, and lacks the discussion on the internal development mechanism and evolution process of idea improvement. This study tracked the process of knowledge building of 33 students majoring in education technology of Henan Institute of Science and Technology for one semester(18 weeks) in
"Education Technology Research Methods". Based on design-based research, the study, on the one hand, strengthens the teaching iterative process centering on improving "idea improvement" of students, on the other hand, theoretically focuses on the internal mechanism of "idea improvement". 509 ideas in Shuke Forum are taken as analysis samples and coded with the knowledge building content coding system. Combined with classroom observation and students interview, quantitative analysis is conducted on the number and depth of the ideas, as well as the life cycle of idea development. The results show that: from the quantity point of view, students can put forward a large number of ideas, but mainly focusing on sharing. The consultative and sublimated ideas are relatively few. As for quality, the views on the whole are good, and with the progress of the study, the depth of view is gradually improved. From the perspective of the life cycle of idea development, there are many changes, including six categories of idea splitting, fusion, variation, self-growth, disappearance and death.