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<p>During the lecture we can show some examples for students' work</p>
i don't think so
Sure, the more examples you give, the more comprehensible it will become
Personally I don't think so as long as it is just as an example, in many cases it could be used to "get the ball rolling" and might be just the catalyst required to initiate a student's creative thought process. It is important to use examples for guidance and not as a template to replace creativity.
