A Study on Collaborative Learning Environment Assisting Learning by Teaching Problem-Solving Strategies to a Computer Agent

我们试图构建一个协作学习环境，在这个环境中，学习者小组在软件代理的协作和帮助下，制定出他们认为有助于解决相关问题的计划，并将这些计划教授给另一个知识不足的代理。在这个过程中，学习者需要洞察问题，并构建自己的知识来解决问题。协作学习平台被实现为一个服务器进程，支持学习者通过网络进行协同工作和交流。作为服务器的后端进程，实现了助教代理和配对代理。TA代理拥有一个问题类型的库，向学习者提供解释，以及每种问题类型的计划列表和如何使用基本知识单元。学习者组通过由客户端进程运行的人机交互，由TA代理提供建议和指导，协作工作于…更多的UT计划基于TA代理提供的知识，并将其提供给配对代理，试图解决与配对代理交互中的问题。后者可以利用此后的计划来解决其他问题。为了支持对不同问题解决方案的不同用法的有效习得，我们研究了一个假设，即这种习得只能通过比较和对比不同的问题解决情景来进行。为了验证电路理论中的这一假设，实现了一个系统，该系统按计划和子计划索引具有解决方案的问题数据库，学习者可以检索具有共同/不同计划的问题解决情节。对电子工程课程学生进行的实验表明，只有当允许学习者通过共同的计划窗口观察到多个解决情节时，习得才会发生。较少

We tried to construct a collaborative learning environment in which the learners group, in collaboration and assisted by a software agent, works out such plans as they think useful for solving the problems concerned and teaches them to another agent having insufficient knowledge. And in this process the learners are expected to get insight into the problems and construct their knowledge for problem-solving.A collaborative learning platform was implemented as a server process which supports learners' collaborative works and communication via a network. And as the backend process of the server, a Teaching Assistant agent and a mate agent is being implemented. The TA agent is possessed of a repertoire of problem types with explanations to be provided to the learners and also a list of plans for each of the problem types and how to use basic knowledge units.The learners group, via HCI run by client processes, being provided with advices and guidances by the TA agent, collaborates to work o … More ut plans based on the TA agent-provided knowledge and supply them to the mate agent, try to solve the problems in interaction with the mate agent. And the latter can makes use of the plans thereafter for solving other problems. The process realizes the learning-by-teaching metaphor.In order to support efficient acquisition of differentiated usage of different problem-solving plans, we studied a hypothesis to the effect that such an acquisition only takes place by comparing and contrasting different problem-solving episodes. For verifying the hypothesis in the field of electrical circuit theory, a system was implemented in which the database of problems with solutions is indexed by plans and subplans and the learners can retrieve problem-solving episodes with common/different plans.The carried out experiment with students in an electronics engineering course revealed that acquisition takes place only when it is allowed for the learners to observe a multiplicity of solution-episodes through common windows of planning. Less