上完数学课,数学老师最开心的事莫过于改作业,看着那一个个红勾,心里就会有成功的喜悦;最难过的事情也莫过于改作业,看着那一个个红叉,又是可惜又是恨啊,心里总是有这样、那样的迷茫或郁闷.笔者提出鼓励学生勇敢地面对自己的错误,仔细地审视自己的错误,认真地反思自己的错误,大胆地说出自己的错误,教师面对错题改进教学策略等,旨在充分利用有价值的错题资源,提升数学教学.许多数学老师说过这样的话:“我讲了这么多遍,这道题怎么还有这么多的学生做错,他们到底有没有在听?还真是越想越生气了!”其实这样不明事理地炒冷饭,对于认知水平 After finishing math class, mathematics teacher is the happiest thing to change homework, looking at that a red hook, my heart will have the joy of success; the most sad thing is to change homework, looking at that a red fork, It is a pity and a hate, my heart is always like that, that kind of confused or depressed.The author proposes to encourage students to bravely face their own mistakes, carefully examine their own mistakes, seriously reflect on their own mistakes, boldly say His mistakes, teachers’ mistakes, improvement of teaching strategies, etc., aiming at making full use of the valuable resources of mistakes and improving math teaching. Many math teachers have said so: “I have said so many times There are so many students doing wrong, they in the end there is not listening? Really want to get more angry! ”In fact, such an unjustified speculation, for the cognitive level