网络环境下的课堂教学已经成为了新课程改革的一个热点问题。大量理论研究表明网络环境可以为实现新课改的理念提供有力的支持，但是现有理论研究基本是停留在思辨层面上，只是定性的将网络环境下的课堂教学与传统课堂教学进行对比而缺乏定量的验证。本研究通过对 “跨越式发展创新探索试验”下的网络环境试验班和传统环境下班级的课堂教学进行大量的观察、收集数据，定量的证明了较之传统环境，网络环境下的课堂教学教师角色，学生角色和师生互动方式都发生了转变，教学媒体更多样，教学资源更丰富等特征，并探讨了网络环境影响课堂教学的 三个层面及其如何使课堂教学效率得到提高的方式方法。

The classroom teaching in the network environment has been a hotspot of the reform on new curriculum.A large number of theoretical researches indicate that the network environment can provide strong support for the realization of the idea of the reform on new curriculum, however, theoretical researches in existence are basically at the speculative level,which only compare the classroom teaching in the network environment with the traditional classroom teaching qualitatively and lack quantitative validation. By lots of observation and data collection of the classroom teaching in the network environment under“Innovative Experiment Of Leapfrogging Development”and in the traditional environment,this paper proves that compared with the traditional environment, the teacher role, student role and interaction between teachers and students of the classroom teaching in the network environment have all changed. Not only the teaching media are more diverse, but also the teaching resources are more abundant. Moreover, this paper probes into three aspects on which the network environment influences the classroom teaching and how to improve the efficiency of the classroom teaching.