Secondly, the progress of instruction is complicated and complex, and the educational achievement of CAI is limited. Some sorts of course, such as basic educational course, are not necessarily to be expressed by the computer to reach productive effect.
Finally, communications and interactions with teacher and computer are quite different. The latter is too impersonal, which ruins the pleasure of emotional exchanges. Sometimes gazing at the cold flickering screen is a disinteresting and tiring experience.
Admittedly, though computer may help teacher to provide student with a richer and more effective learning environment, yet they can not substitute the position of teacher, not only today, but the future.
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