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Online education makes it completely break the constraints of time , education and training through the network anytime , anywhere . Future network teaching will be standardized, modular development , network teaching should be consistent with the norms and standards of international and domestic network education , to support the sharing of educational resources , meet the requirements of modern educational technology development and teaching mode . Remote network teaching is by means of the Internet network platform , give full play to the advantages and characteristics of network education , so that people learn more , learn faster and less resource consumption . And therefore should be teaching content as the first , emphasizing learner-centered , learners are active constructors of knowledge significance , but also highlight the key role of collaborative learning , which requires in network teaching learning environment and education The combination of features . In this paper, a Web browser / server ( B / S ) mode of the system to design the remote teaching system , the application of the Unified Modeling Language (UML) established the system requirements and analytical models , class diagrams and sequence diagram indicates the static model of the system and dynamic model . And a reasonable relational database , relational database design , the use of the ER diagram and the corresponding pattern of relationships characterized by . Secondly, in the \engineering courseware . Used in the production of compressed outline, pictures, text , cascade format , hierarchical DHTML technology structure courseware , and interactive features , while providing a variety of navigation to facilitate the operation and use of learners . Finally, the use of the Web page generation technology and the use of a recursive algorithm specific technical development and design of this database function Tutor subsystem , discussions and exchange of difficult problems . The same time , in order to check the learners' mastery of the situation , but also design and development of intelligent extract the exam subsystem . In short, the design and development is integrated in the existing conditions of distance education technology , teachers, learners and courseware organic combine to form a complete, practical distance education system .
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