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This paper develops a web-based discussion system applying Hill's group cognitive map. The authors apply it to elementary school students and analyze the learning effects. Web-based discussion allows learners to actively participate in learning activities. It can facilitate multiple opportunities for learner-oriented interactions in web-based environments. Most web-based discussions occur through bulletin boards and data directories with the intention of creating basic communication exchanges among learners. Many instructional systems, however, are not built on rigorous, theoretically sound platforms. To avoid this trend and if they expect effective learning processes to consistently take place, the development of web-based discussion systems should be based on instructional models that are proven to be theoretically sound and effective in this environment.
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