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当代数学教育家G·波利亚说过,“我们如果不用‘题目的变更’,几乎是不能有什么进展的”.这就是说,我们的数学课堂应关注变式问题,加强变式题的研究.在教学中不能就题论题,要以题论理,举一反三,努力提高变式教学的有效性.一、问题变式设计的价值与目的在数学教学中,要注重问题变式设计,既要重视数学基础知识和基本技能的落实和运用,也要注重数学
G · Pollia, a contemporary mathematics educator, has said that “if we do not have to change the subject, there is hardly any progress.” This means that our math class should pay attention to the problem of variation and strengthen the variant In the teaching of the problem can not be on the topic of the question, should be the subject of reasoning, giving top priority to make efforts to improve the effectiveness of the variant teaching.A variant of the problem of value and purpose of teaching in mathematics teaching, we should pay attention to the problem of variable design, It is necessary to attach importance to the implementation of mathematical basic knowledge and basic skills and use, but also pay attention to mathematics