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近年来数列不等式成为高考的热点和难点试题,如何让学生掌握这类试题的解法,并且做到举一反三、触类旁通,一直以来都是师生苦苦探索的焦点问题.实践证明,对一道好的典型题目的深入研究,对一个熟悉的问题情境赋予变化的认知冲突,在冲突中锻炼思维,在问题的解决中可提高能力。同时这样做能够帮助学生跳出题海,并且有事半功倍之效果.本文对安徽省的一道高考试题作了如下变式,让学生真正学会解决这类问题的几种解法.即放缩
In recent years, numerical inequalities have become hot and difficult test questions for college entrance examination, how to make students master the solution of such questions, and to learn from one side to another, has been the focal point of painstaking exploration by teachers and students. Practice has proved that a good example The topic of in-depth study, to a familiar problem situation to change the cognitive conflict, thinking in the exercise of conflict, the problem can be resolved to improve their ability. At the same time doing so can help students jump out of the sea, and have a multiplier effect.This article on Anhui province entrance exam questions made the following variants, so that students really learn to solve these problems several solutions.