Modeling Learning Contents Based on Web Services

This paper present an interaction model for effectively sharing, authoring and composing e-learning courses. The model supports real-time communication between learners. First we put forward the concept of learning services based on web services, which enable integration of the learning objects and other learning resources. Then we propose a method to create new aggregate learning services or composite learning services by combining component learning services and other web services. Finally cooperation and interaction methods between learning services are proposed for effective interaction between learners. It resolves problems of customization, sequencing, reuse and duplication of learning objects when authoring complicated learning courses and sharing learning resources on different platforms.