Development of a Case-Based Reasoning System and a CSCL System for Practices of IT-Education to Teachers

随着社会信息化程度的不断提高，信息技术（IT）教育在从小学到高中的几乎所有教育场所都刚刚起步。由于我们的社会从未遇到过如此迅速的教育革命，很少有教师经历过信息技术教育，在信息技术教育的实践中有用的案例数量很少。为了在短期内将教师培养成为信息技术教育专家，必须将信息技术教育实践经验及时、免费地向各教育场所的教师开放，本文正是在上述信息技术教育背景下，构建了一个面向教师的信息技术教育实践案例推理系统和CSCL系统。使用这个系统，教师在任何教育环境中，无论是城市或地方的网站，可以共享一个共同的知识信息技术教育practices.In 1996年，我们已经构建了基于案例的推理系统的信息技术教育实践，这是通过互联网访问。该系统在互联网上向公众开放。网址是http：//www.ai.is.uec.ac.jp，并在日本教育技术学会的时事通讯中公布。1997年，我们改进了我们的基于案例的推理系统，增加了“案例修改器”和“案例修复器”。此外，我们还在系统中添加了许多有关IT教育的有用数据。最后对系统的可操作性和可用性进行了评价。作为这些实验的结果，我们开发了一个CSCL系统作为基于案例推理系统的接口。

While our society is becomming increasingly information-oriented, Information Technology (IT) Education has just started in nearly all educational sites from elementary to high schools. Since our society has never met such a rapid educational revolution before, very few teachers experienced IT Education and the amount of useful cases of practices in It Education is small. In order to train teachers to be IT Education experts in a short term, the experiences of practices in IT Education must be opened timely and freely to teachers in all educational sites.Considering the background of IT EAducation as mentioned above, the purpose of our study is to construct a Case-Based Reasoning System and a CSCL System for Practices of IT Education to Teachers. Using this system, Teachers in any educational environment, in spite of urban or local sites, can share a common knowledge of IT Education Practice.In 1996, we have constructed the Case-Based Reasoning System for Practices of IT Education which is accessible through the Internet. The system is opened to the public on the internet. The URL is http : //www.ai.is.uec.ac.jp and it is announced in a newsletter ofJapan Society for Educational Technology. In 1997, we improved our Case-Based Reasoning by System by adding "Case Modifier" and "Case Repairer" to the system. Moreover, we added many useful data about IT Education to the system. Fimally, we evaluated operationality and usability of the system. As the result of these experimentation, we developed a CSCL system as the interface of the Case-Based Reasoning System.