The purpose of its use is to improve the effectiveness of teaching.

使用课件的目的在于增强教学的有效性。

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The effectiveness of teaching and research is currently a hot topic.

有效性是当前教学研究的热门话题。

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The existences of these problems have affected the effectiveness of teaching.

这些问题的存在已经影响了课堂教学的实效性。

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There seems to be no correlation between student perception of the effectiveness of teaching (as measured by RateMyProfessor.com) and faculty compensation, for example, but professors who teach a lot get paid somewhat more than those that do not.

FORBES: The Three "I's" of Higher Ed Reform

However, by this time the tide was turning and many leading educators were questioning the effectiveness of mixed ability teaching.

BBC: Setting, streaming - how schools teach

The Education Secretary, David Blunkett, said on Sunday that he would be speaking to the Office for Standards in Education about evaluating the effectiveness of single sex teaching of some subjects in co-educational schools.

BBC: Single sex classes 'not the answer'