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对一个刚升入初中的学生来说,数学动点习题往往对他们来说是困难的。初一数学学了绝对值、数轴知识后,动点问题的习题就会出现了,此时,教师应帮助学生理清知识点,梳理出此类解题的思路,这对于学生树立信心,掌握良好的解题规范有很好的启发效应。七年级数学教材中指出,数轴是一种特定几何图形,原点、正方向、单位长度是称数轴的三要素。同时,我们也知道,从原点出发,朝正半轴上的点对应正数,朝相反方向负半轴上的点对应负
For a student who has just entered junior high school, it is often difficult for them to practice math points. After the first maths learned the absolute value and the knowledge of several axes, the problem of moving point will appear. At this moment, the teacher should help the students to sort out the knowledge points and sort out the ideas of solving the problems. This will help students to build confidence and grasp Good problem solving rules have a good heuristic effect. The seventh grade mathematics teaching materials pointed out that the number of axes is a specific geometry, origin, positive direction, the unit length is called the axis of the three elements. At the same time, we also know that starting from the origin, the point on the positive semi-axis corresponds to a positive number and the point on the negative semi-axis in the opposite direction corresponds to a negative