读过《中小学数学》(小学版)2011年第1、2期刘畅的《重在怎样教“短除法”》(以下简称《刘文》)和2012年第1、2期陆晓林的《也谈“短除法”》(以下简称《陆文》),引发我思考。现有的课标教材存在两种情况,一是部分教材中将“短除法”求最大公因数和最小公倍数(简称“两最”)编排为补充内容而放在“你知道吗?”栏目中,供教师选择补充教学,自然使得一线教师在短除法教与不教的问题上感到困惑。二是部分教材仍将“短 Read ”primary and secondary mathematics“ (primary school edition) in 2011 the first two 1,2 Liu Chang’s ”how to teach in the“ short division ”“ (hereinafter referred to as ”Liu“) and in 2012 the first two Lu Xiaolin ”Also talk about“ short division ”“ (hereinafter referred to as ”land“), triggering my thinking. There are two kinds of existing textbook teaching materials. One is that part of the teaching materials will be arranged as the supplementary content based on the shortest divisor and the greatest common divisor and the least common multiple (abbreviated as ”the two most“). ”You know ?? "Column, for teachers to choose to supplement the teaching, naturally makes front-line teachers in the short division of law to teach and not to teach the question feel confused. Second, some textbooks will still be short