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关于初一绝对值定义的教学尝试汝箕沟煤矿中学杨永华初一学生在学习绝对值一节时，大多数学生表现为理解，即使有些学生记住了运算法则，也难免出现错误．究其原因是定义“一个数ａ的绝对值就是数轴上表示数ａ的点与原点的距离”中使用了“距离”这个词来解释，对初一学生...
Teaching Attempts on the Definition of Absolute Value of the First Grade In the ditching coal mine Middle School Yang Yonghua The first grade students learned absolute value, most students showed understanding, even if some students remembered the algorithm, they will inevitably get an error. The reason for this is that the definition of “the absolute value of a number a is the distance between the point on the axis representing the number a and the origin” is used in the explanation of “distance” to the first-year students...