许多小学生进入中、高年级阶段后,计算的正确率大大下降。原因是多方面的,对大量的错例分析后可知,计算法则未掌握造成的仅占一小部分,而大多是由一些不良的心理素质及其导致的不良计算习惯所致。其一,缺少认真负责、一丝不苟的学习心态。如由于写字了草,结果是0.6不分,1.7互变,4.9混同等。由于学习用品不齐,一些学 After many primary students enter the middle and senior grades, the accuracy of the calculation has dropped significantly. There are many reasons for this. After analyzing a large number of wrong examples, we can see that only a small part of the calculation rules are not mastered. Most of them are caused by some bad psychological qualities and their bad calculation habits. First, the lack of serious and responsible, meticulous learning attitude. As a result of writing the grass, the result is 0.6 regardless, 1.7 interchanged, 4.9 mixed and so on. Due to lack of learning supplies, some learning