Research And Implementation Of Network Teaching And Learning Platform Based On The 3-layer Web-based Tutoring Sites

With the rapid development of education information technology and network technology, network teaching has become a hot field of education. It spans the limitition in time and space, and breaks the traditional model in classroom teaching. Because of the characteristics of sharing educational resources and powerful interactive capabilities it is well favored by all ages of teachers and students.This thesis studies and designs a network teaching and learning platform based on.NET framework and Web technology. This platform uses constructivist educational theory as the guiding ideology, and realizes a network teaching and learning environment of easy communication and interaction. In this environment, teachers are leaders, and students are subjects, coordination between them, which helps to promote students self-learning ability and collaborative learning ability. Based on requirements analysis in network teaching, the system uses B/S model of three-tier architecture, determining the basic functions of system. It builds part of software model of the system by using Software Engineering methods. It also designs a database and some functions of teaching, learning, assignment, examination, course answering and so on, and realizes the online examination system, which is an intelligent, open, multi-disciplinary, multi-level, general-purpose examination platform, which has a complete function, simple operation, strong interaction, and good practical value.This on-line teaching platform uses Microsoft Visual Studio. NET2003 as development tools, using C# as the main development language, using Microsoft SQL Server 2000 as a background database, and combining with ASRNET technology and ADONET database access technology and so on. It is advanced to some extent both in theory and technology.