数轴是规定了原点、正方向和单位长度的直线,它是初一同学学习有理数时所接触到的一个重要图形.这个图形是理解有理数的概念有理数大小的比较与有理数运算的重要工具.其实数轴的作用还不止这些,对于某些数学问题。如果利用数轴求解,不仅能化难为易、化繁为简,而且解法直观、明快.现举例说明如下. 一、利用数轴求样本的中位数 The number axis is a straight line that defines the origin, positive direction, and unit length. It is an important figure that the first grader is exposed to when they learn rational numbers. This figure is an important tool for understanding the rational number of rational numbers and the rational number operations. The role does not stop there, for some math problems. If you use the numerical axis to solve, not only can it be difficult to understand, it can be simplified, and the solution is straightforward and clear. The examples are as follows. First, use the number of axes to find the median of the sample.