| With the fast development of network and communications technology, the Internet-based distance education, as a new research field is rising gradually. The Internet-based distance education is superior to the other distance education forms, which is global, interactive, shareable, actual effect and characteristic with making the best of the Internet resource and application environment. Because of the content usually organized on Web, the Internet-based distance education also intitules Web-based courseware. At present, the forms of the Web-based courseware, influenced by the lower transmission speed of the Internet, are limited to hype text with little use of images, videos and audio. It depressed the advantage of the Internet-Base instruction. By the viewpoint of the constructivism theory, study comes from the selectivity attention of perceivable experience, and go-aheadism, sociality and scene are the hinge of study. Considering that, we introduce Virtual Reality (abbr. VR) to be used as a new media in Web-based courseware to simulate scene, experiment and skill training according to the study requirement. It will solve the emphases and difficulty of teaching by taking the advantage of VR nteractivity, immersion, multi-apperception and operationlized character. And it will so move the learner creativity and go-aheadism and advance the learner episteme construction that it will be helpful to completing the instructive objective. We name this kind of Web-based courseware for Web-based courseware with VR supporting. VR is a kind of integrative technology related to computer, sense passing and meterage, simulation, microelectronics. Employing the three-dimensional graphics creating technology, multi-sense interactivity technology and high-resolution display technology VR will create true to nature three-dimensional scene. Users with the help of data gloves, head mounted displays or the simple keyboard and mouse can touch, operate every object in the scene, go anywhere they want and do everything they like, as if he was personally on the scene. By now, VR has been widely used in drilling, sightseeing, shopping and gaming. The using of yR in education is being studied. Presently, the form of yR mostly used in Web-Base courseware is desktop VR. The desktop yR mainly depend on VR software to be carried out with a little requirement to yR hardware which are too costly to be used in distance education. There is some difference between desktop VR and other more advanced forms of yR. But the desktop yR is good enough to meet the instructive demand. The Web-based courseware with VR supporting should be composed of VR scene and HTML Web pages. VR scene is the soul of the courseware, and the HTML Web pages are the supplementation. To develop VR-Base courseware, we need HTML page developing tools such as FrontPage98 and VR software, here, we elect Virtual Reality Modeling Language (abbr. VRML). VRMIL is a practical, ability and standardized format for describing three- dimensional objects. In addition, VRML incorporates one of the most powerful attributes of HTML, and that is the linking component. In Web-based courseware, VRML can be used to 1) Simulate experiment. 2) Present difficult question intuitively. 3) Help to bring up the learner exploring and innovative sprint. 4) Create teaching scene. 5) Build up virtual reality classroom. The developin~ process of the Web-based courseware with VR supporting is similar to the tradii{ional Web-based CAl courseware. The difference betw~en them is that the Web... |
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