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The development of human civilization can not be separated from the education, Along with the development of network technology, computer technology and multimedia technology, so the limitations of traditional teaching are becoming more and more obvious, which can not satisfy the teaching requirement, can not suit the development of times, and are unfavorable to students’ independent study. Because of the advantage in allopatry but real time, distance education has increasingly got a hot topic by the people both at home and abroad in recent years. According to the actual condition, the author researches and realizes an online virtual classroom system, and gives an improvement approach from the education angle, moreover, good results have been achieved in practice. The research is very significant to share high quality teaching resources, and to provide good network learning environment for the teachers and students.The research begins from the theory and practice. In theory, the author defines the virtual classroom based on web, researches its components and classification, summary its functions and characteristics, discusses its advantages and disadvantages. And also studies the technology theory about online virtual classroom, such as Web development technology, computer support cooperative work, Microsoft .NET framework, database technology. In practice, basing on the network teaching platform and our school education situation, the author designs and carries out the virtual classroom system based on the. NET including login control, online tutorials, assignments and exams, video instruction and information management functional modules, and users can log in as the different roles to use the different operating functions.the characteristics of this system are that it establishes a rational database, and achieves the online teaching system, particularly, operations management, online test, video instruction, and system management, reaches the intended objectives. The system has friendly interface, and is easy to use.
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