培养学生准确而迅速的计算能力,是小学数学教学的一项重要任务。然而数学教学中存在着一个重要的问题,就是学生在计算时经常出现错误。笔者在教学分数加减法的过程中,发现学生出现的错误除了算理、算法的问题外,学生的学习心理、学习习惯也是影响计算质量的重要因素之一。 To train students’ accurate and rapid computing ability is an important task in primary school mathematics teaching. However, there is an important problem in mathematics teaching that students often make mistakes when calculating. In the course of addition and subtraction of teaching scores, I found that in addition to the problems of arithmetic and algorithm, students’ learning psychology and learning habits are also one of the important factors that affect the quality of calculation.