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在高中数学教学内容中,排列与组合问题是教学的一个难点问题,其所构建的习题或试题具有一定灵活度、机动性、综合性与抽象性,在解题过程中需要进行必须的分类分析、转化处理、反推比对等多种思维方式。一、优先“特别”解决特殊元素问题在排列组合问题中,特殊元素或特殊位置是经常出现的,只有优先“特殊”解决特别元素问题,才能将整个问题梳理得更具条理性和逻
In high school mathematics teaching contents, arrangement and combination problems are a difficult problem in teaching. The exercises or test questions they construct have some flexibility, mobility, comprehensiveness and abstraction. They must be classified and analyzed in the course of problem solving , Conversion processing, anti-push comparison and many other ways of thinking. First, the special “special ” to solve the problem of special elements In the arrangement of combinatorial problems, special elements or special locations are often appear, only the priority “special ” to solve the special elements of the problem, in order to sort out the entire issue more organized And logic