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文【1】通过对普通高中课程标准实验教科书(人民教育出版社A版)“等差数列前n项和公式推导”的教学实践得出一个结论:教材的设计存在缺陷.通过对文章的研读觉得有几个问题值得重视.
[1] Through the teaching practice of ordinary high school curriculum standard experimental textbook (People’s Education Press A) “before the arithmetic progression of n and formula ” draw a conclusion: the design of teaching materials is flawed.Through the article I think there are several questions worth studying.