The experience from the practical use of our system has taught us that it is difficult to maintain and extend a system with a stand-alone application. This system can make a hyper-network constraints between network nodes, and therefore the effective learning materials can be presented in the World Wide Web. Also, the teaching materials on current stand-alone application can be easily shifted to WWW environment. We have implemented a courseware platform system called WebMall. Figure 1 shows the user interface of the system.
Parent frame contains a parent applet which manages all the hyper-network map on the courseware.
Each material consists of Java applets which communicates with the parent applet. This frame gives the additional messages of educational instruction to learners. By the communication among these applets, effective courseware can be designed on common web browsers. Network constraints can be controlled by the communication between this applet and teaching material applets. Transfer of the node is controlled and the location of the learner in the hyper-network is always shown in simple graphics.