变式教学不仅仅是教师设计变式,学生应付变式,教师应该让学生也加入到变式的行列,培养学生主动对问题进行变式思考,让学生充分认识变式的自然性,变式前后问题的关联性,从哪些方面去进行变式,只有这样,变式教学才更为有效和深入。 Variant teaching is not only a teacher design variant, students cope with variants, teachers should allow students to join the ranks of variants, to develop students take the initiative to think aloud on the issue, so that students fully understand the nature of variants, variants Before and after the relevance of the problem, from which aspects to carry out the change, the only way to change the teaching is more effective and in-depth.