运算能力是数学能力的一项基本功,初中数学中大多数问题的解决,都离不开运算,常言道:离开了运算,数学就成了“无源之水,无本之木”.然而在考试过程中,很多学生就是因为运算能力低下而导致成绩不理想.因此,如何提高学生的运算能力,已成为时下初中数学教学中一个比较突出的问题.笔者认为,这种状况的形成与学生存在的两种错误心理还 Computational ability is a basic skill of math ability. The solution to most problems in junior high school mathematics can not be separated from computing. As the saying goes: Maths have become “passive water without wood” after leaving arithmetic. However, in the process of exam, many students are not good because of the low computing ability, so how to improve the computing ability of the students has become a prominent problem in junior high school mathematics teaching nowadays.I believe that the formation of this situation and Two kinds of mistakes students still exist