近年來資訊科技及網際網路快速發展，網路應用層面也越來越廣，而教學活動也受到資訊科技的影響，目前一些資訊教育專家也正在致力於如何將資訊科技及網路和教學活動結合，以補足傳統教育的缺失，以提供更好的學習環境。有越來越多電腦輔助教學系統已經被開發出來，但是這些教學軟體不是缺乏完整的課程設計流程就是沒有教學成效分析，並常常忽略了網路頻寬的問題。在本研究中，我們在網路環境遵循完整的課程軟體發展週期和最新的網路程式技術來開發「國中電磁學」多媒體電腦輔助教學系統，並與三所國中合作，施行實際的試驗。但是，由於時間的限制級測試環境的不同，所以本系統並沒有再全部三所國中均達到效果，但多媒體的有效使用，確實可以增加學習者的學習意願。
Information technology and Internet are growing so fast in recent years. Internet is used widely and gradually influences the educational activities. Many education experts have devoted to integrate the information technology and educational activities to provide better educational environment. More and more web-based computer assisted instruction (CAI) systems have been developed. Most of these systems are either lack of a complete courseware design or without the effect analysis. In addition, the problem of transmission bandwidth on Internet is often ignored. In this study, we develop a web-based CAI that teaches the electromagnetic unit of junior high school. We have followed the complete courseware design cycle and used the newest wed-programming technologies. The system has been tested on three junior high schools. Due to the limitation of time and the difference of testing environment, the system did not have significant effects on all three schools. However, it did improve the learner's willing in study.
