概念不清、审题不全是小学生数学学习时常会出现的现象,笔者在多年的数学教学实践中深深地感到:只有“对症下药”才能从源头上有效避免此类现象的发生。 The concept is unclear, the trial is incomplete is a phenomenon often occurs in primary school mathematics learning, the author in the years of mathematics teaching practice deeply felt that only “the right medicine” can effectively prevent such phenomena from happening at the source.