Research On Virtual Experiment Based On WEB3D And Its Application In Teaching

Virtual experiment is an operating environment based on its own hardware and software, which can supplement or replace partly, or evenly wholly, the operating steps for traditional experiments, with the help of graphics, simulation and virtual reality created via computer. With the quick development of network education, the public pay more and more attention to the quality of network teaching, and experiment teaching among network education is a key point that attracts tremendous concerns. The type of network teaching predetermines that it is quite impossible to organize real experiments, thus making virtual experiment which has more excellent characteristic became an applicable way to solve the problem. Under the great trend of this research, the thesis, on the basis of analyzing on present situation about network virtual experiment, makes profound exploration over experiments related to the digital projector and use of multimedia classroom which is part of the Curriculum called Modern Education Technology, a nation-level Perfect Curriculum.The thesis starts with the experiment teaching of network education, analyses problems still existing, such as being short of experiment facilities, and a timetable problem for arranging experiments and so on, concerning experiment teaching of Modern Education Technology, which is a common required course, and finally draws up a program to solve those problems. The program can not only offer solutions to problems existing in experiment teaching in network education to a certain extent, but also provides students with operating methods for them to achieve the know-how.The second part explains definitions related to virtual experiment, and divides virtual experiment from different aspects. The author organizes current research situation home and abroad by searching database and websites, compares different current development technologies of virtual experiment and studies features about digital projector and use of multimedia classroom, and finally decides to adopt technology of VRML and Java/Javascript for exploration,The third part analyses theoretical foundation of virtual experiment exploration and applications, and also expounds ideas and principles of the designing of network virtual experiment.The fourth part discusses the realization of the virtual experiment based on WEB3D, introduces keep technologies such as Virtual Reality Molding Language, Java/Javascript technology, assistant software 3DS MAX and VrmlPad, etc., and probes into functional structure and inter-designing procedures of digital projector virtual experiment and virtual multimedia classroom,.The last part of the thesis tells difference of traditional experiment teaching and virtual experiment teaching, and analyses the possibility of the learning transfer from virtual to reality. We design a program of experiment teaching which integrate virtual experiment and real experiment. At last, we simply evaluate the application of virtual experiment in teaching.