Research on Sharing Method of Instructional Object for IT Education

当我们重用软件时，软件单元的粒度是非常重要的。应用框架和组件是软件重用的有效粒度。在e-Learning领域，设计和开发了基于SCORM(可共享内容对象参考模型)和开放式LMS(学习管理系统)的教材，并开发了一个基于知识库的e-Learning系统集成开发环境Rebecca。E-Learning的应用框架、教学对象和教学对象存储在储存库中。知识库用CORBA实现，我们开发了基于SCORM2004的教学对象，教学对象分为三个不同的层次：初级、中级和高级。自适应e-Learning系统为个体学习者的理解提供了自适应的教学对象，并设计了一种使用开源SCORM工具Reload Editor的实现方法。对SCORM2004的排序功能有一定的参考价值。Web服务是Rebecca在分布式环境下的一种有效技术。

When we reuse software, granularity of the software unit is very important. Application framework and components are effective granularity for reusing software. In e-Learning domains, instructional materials based on SCORM (Sharable Content Object Reference Model) and open LMS (Learning Management System) are designedand developed.We have already developed a repository based integrated development environment for e-Learning system which is called REBECCA. Application framework for e-Learning, instructional objects, and pedagogy objects are stored in the repository. The repository is implemented by CORBA.We developed instructional objects which are based on SCORM2004; the instructional objects have three different levels: beginner level, intermediate level, and advanced level. Adaptive e-Learning systems provide adaptive instructional objects for individual learners' understanding.We also designed an implementing method for using Reload Editor, which is an open source SCORM tool. It is useful for sequencing function of SCORM2004. Web service is an effective technology for REBECCA in a distributed environment.