【作者】 万宁；

【导师】 黄堂红；

【作者基本信息】 四川师范大学 ， 教育技术学， 2007， 硕士

【摘要】 在教学中,实验教学是一种直观、形象的方法,它通过实验手段,抽象具体地展示人们认识和发现某一知识、原理的过程,让学生在较短的时间内理解、认识和掌握某一知识、原理,并为掌握其它知识打基础。但是现在的教学条件依然存在某些缺陷及其多变性、复杂性、孤立性等客观原因,不可能把每个实验都应用于教学中,也不可能让学生真实地完成每一次实验。另外,目前地实验教育中学生在一定程度上缺少实践动手能力。为了在教学过程中使学生尽可能多的理解这些难以完成的设计与操作,我们通常充分、合理、有效的运用多媒体教学课件,以节省教学时间,降低实验教学的成本而提高其实验教学效率和质量。同时,随着社会的发展和科技的进步,人们对教学课件中的人机交互方式提出了新的要求,除了已经广泛使用的多媒体技术、网络通信技术等结合基于因特网的多媒体手段以外,现在人们探索最多的是多媒体技术与虚拟现实、仿真技术、图形技术等结合生成的高度逼真和交互的给人以身临其景的“虚拟世界”技术。从而实现不同物理位置上多个用户共同“沉浸”在一个虚拟场景中,实现自由漫游和用户间的相互交流。该技术应用于实验教学课件的开发中以此来促进实验教学的进一步实施,本文就此将展开深入的研究。笔者首先分析了实验教学的理论基础及所存在的问题和发展趋势,探析了虚拟现实技术的特征以及虚拟场景的建立,还重点研究了三维场景建模和交互实现技术,对建模技术的发展和实现以及几何建模、运动建模、物体建模等进行分析和比较。接着,讨论了虚拟现实中交互功能的实现,包括脚本语言和Virtools工具实现交互的功能,并根据实验教学和虚拟现实技术构建虚拟场景的特点和作用,将虚拟技术应用于课件的设计和开发中。最后,结合了教育技术学中的典型实验——多媒体投影教学演示系统,利用3DSMAX建模和Virtools进行行为交互功能的实现,创建了基于虚拟场景的实验教学课件,并反思课题中存在的问题与不足,并提出了改进方法和下一步研究计划。更多还原

【Abstract】 In the education, the experimental teaching is one kind of is direct-viewing and the image method, through the experimental method, it can abstractly and specifically demonstrated process of the people knew and discovered some knowledge, the principle, lets the student understand, know and grasps some knowledge ,the principle in a shorter time, and for grasping other knowledges to building the foundation. At the present, teaching condition still has certain flaws and the objective reason that its the variety, the complexity, the isolation and so on, it is impossible that each experiment all to apply in the teaching and lets the students really complete each experiment. Moreover, at present, in the experiment education procession, the students lack of the practice ability to the certain degree. In order to understanding these which the design and operation with difficulty completes as far as possible in the teaching process to students, we usual use fully,reasonably, effectively multimedia teaching courseware so that saves the teaching time, and reduces the experimental teaching ,and enhance its experimental teaching efficiency and the quality.At the same time, along with the development of society and technical progress, the people proposed the new request to the man-machine interactive way among teaching courseware, except multimedia method which already widely use union of multimedia technical, network communication technical that based on the Internet. The people explore most technology were "the virtual world" that are highly life like and interactive give the person by the body near its scenery, which union production of the multimedia technology and virtual reality, simulation technology, graph technology and so on. So many users have realized“immerse”commonly in a virtual environment in the different physical location so that realize mutual exchange between freely roams and users. This technology will apply to the development of experimental teaching class in order to promoting further implementation of the experimental education, the article will be further research by the views.At first ,the author has analyzed theory foundations, questions and the development tendency of the experimental educations, has searched the virtual reality technical characteristic as well as how to establish the virtual environment, also has studied the three dimensional scene modelling and alternately realizes of the technology, analyzed and compared with the modelling technology of development, the realization of the geometry modelling, the movement modelling, the object modelling and so on. In addition, it discussed realization of interactive function in virtual reality, including realization interactive function that the script language and the Virtools tools, and according to characteristic and the function of experimental teaching and virtual reality technology construct the virtual environment, applies the virtual technology to designing and developping the courseware.Finally, I unified model experiment of the educational technology -- computer multimedia projection teaching system, has used the 3DSMAX modelling and Virtools to carring on realization of the behavior interactive functions, founded experimental education courseware that based on the virtual environment, and reconsidered the questions and the insufficiency in the topic, proposed the improvement method and the research plan next time.更多还原