论文部分内容阅读
平方根和算术平方根是初中数学中的两个既重要又不易掌握的概念,必须认真学习好,怎样学习这两个概念呢?我们的体会是: 一、正误对比,从错悟理,正确理解概念例1 计算(9/49)~(1/2)
The square root and the square root of arithmetic are two important and difficult to grasp concepts in junior high school mathematics. We must conscientiously study well. How do we learn these two concepts? Our experience is: First, right and wrong comparison, and understanding the concept from the wrong perspective. Example 1 Calculation (9/49)~(1/2)