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Because of the lack of interactivity in E-learning, the design ideas are proposed to build a 3D interactive virtual learning environment which is built based on OpenSim platform-an open source virtual reality platform in the paper. The architecture of OpenSim platform is introduced, the development process of a 3D interactive virtual learning environment is summarized based on OpenSim platform, and the key technology and implementation are discussed.
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Zhao et al. (2010) studied this question.