论文部分内容阅读
数轴是初中数学的重要内容,它不仅反映了数轴上的点与实数的一一对应关系,也可直观地进行实数大小的比较.另外,还可以以它为载体衍生出与绝对值、方程、不等式、最值等有关的许多问题.通过对数轴的观察、分析、思考,可获得解题的信息,再结合有关概念、法则,即可简明直观地解决有关问题.现举例说明如下. 例如图,数轴上有八个点A、B、C、D、E、F、G、H,分别代表八个实数a、b、c、d、e、f、g、h.
The number axis is an important content of junior high school mathematics. It not only reflects the one-to-one correspondence between points on the axis and real numbers, but also allows intuitive comparison of the real numbers. In addition, it can also be derived as a carrier with absolute values, equations, Many problems related to inequality, the most value and so on. Through the observation, analysis and thinking of the logarithmic axis, the information for solving the problem can be obtained, combined with relevant concepts and rules, and the relevant problems can be solved concisely and intuitively. The examples are as follows. For example, There are eight points A, B, C, D, E, F, G, H on the number axis, which represent eight real numbers a, b, c, d, e, f, g, h.