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1运用归类思想可以提高正答率笔者通过多年的教学发现,无论是小的测验还是大的考试甚至是高考,数学解题的正答率显得尤为重要,很多学习比较好的学生试题发下来一看就会,一做就会出现差错,有的学生往往因为考虑不周而没有考出自己的理想成绩,让人感到痛心,有的学生走出考场就以太马虎搪塞过去。究其原因不外乎有这几个因素:一是考试为了赶时间在移项应改变正负号方面以及不等式两边乘负号要改变不等号方向等出现
1 The use of classification can improve the rate of positive The author through many years of teaching found that both small test or a large test or even college entrance examination, mathematics problem solving rate is particularly important, a lot of learning better student questions down look Some mistakes will be made when some students do not test their own ideal results because of poor consideration. Some students walk out of the examination room and pretend to be sloppy in the past. The reason is nothing more than these several factors: First, in order to test the time in the shift should change the sign as well as inequality on both sides of the minus sign to change the direction of inequalities appear