Are computers an essential feature of modern education? What subjects can be better taught using computers? Are there aspects of a good education that cannot be taught using computers?
Thus, while computers may be useful as a tool for practicing simple skills, they are not an essential feature of modern education, because they cannot monitor a student’s grasp of concepts, nor evaluate a student’s reasoning. Until further developments in computers are made the human teacher will remain indispensable. - Conclusion re-states main ideas
Remember: this sample answer is one of several satisfactory ways to answer the question. Other essays which respond to the writing task would also be acceptable.
Source: Prepare for IELTS, by Vanessa Todd & Penny Cameron, 1996, UTS, Australia.