In the web based educational settings, how to interact between the student and
teacher, among students are very important by the Internet. The reason is as
follow, because the interaction becomes the very educational communication and
helps the growth of social characters. As Socrates\' teaching, good education
consists of an endless communication. Therefore interpersonal interaction is
essential for a good educational environment. In this study, a web based
collaborative learning system is designed and implemented to improve learner\'s
social interaction. Moreover, I proved the functional effectiveness of system
through an experiment.