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中学数学课本中某些内容,是逐步引入,逐步加深的。因此,教学某些内容时,“急于求成”是不行的,“一次完成”更是不可能的。在这里,谈谈数的“绝对值”的教学问题。
Some of the contents of middle school math textbooks are gradually introduced and gradually deepened. Therefore, when teaching certain contents, it is not possible to “immediately seek success” and it is impossible to “complete at one time”. Here, talk about the teaching of the “absolute value” of numbers.