李海峰， 王 炜
【关 键 词 】：
涟漪拓展探究法； 在线协作知识建构； 深度学习； 学习策略； 在线学习； “数课”平台
Online collaborative knowledge building is an important way to promote online learning and knowledge creation. However, its effective implementation has always been hindered by the problems of numerous superficial knowledge constructions and unsustainable deep knowledge building. In order to realize the continuous development of online deep collaborative knowledge building, ripple expansion inquiry method, a theoretical model, is constructed based on social constructivism theory, social system theory and self-organization theory. That model is a metaphor for the continuum development of deep knowledge building, including learning environment, behavior organization, monitoring and evaluation, and knowledge creation. "Stone" metaphorically refers to the design of the problems, involving the transformation and generation of learning content and problems, which determines the initial depth and learning motivation of knowledge construction. The "falling point" metaphors the opportunity, situation and node of problem creation, while the "ripple" metaphors the scope, depth and continuum development of knowledge construction. This study adopts the design-based research method to examine the model on Shu Ke platform. After three rounds of experimental iteration, the design of the problem continuum and learning framework of the model have been improved. Finally, strategies of ripple expansion inquiry, which is oriented by problem solving, supported by learning scaffolds and guaranteed by behavior organization, are formed to promote the continuum development of online deep collaborative knowledge building.