With the development of the Educational Technology theories, the research on CAI (Computer Assisted Instruction) gradually changed from comparing the computer with conventional media to regarding the computer as part of Educational media system.

• 随着教育技术理论的不断完善，人们对计算机辅助教学的研究已经逐渐脱离了将计算机媒体与其它媒体进行比较的模式，转而将计算机纳入教学媒体系统中，用科学的方法对教学进行设计，这其中当然包括教学媒体的设计。