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降阶策略就是采取行之有效的方法和技巧来降低所要解决问题中的相关因素的阶次,以达到化难为易、化繁为简的目的,从而提高解题效益.笔者将降阶策略总结为:将高维问题转化为低维问题、将多元问题转化单元问题、将多体问题转化为单体问题、将多程问题转化为单程问题等.下面结合实例加以说明,供大家参考.一、高维转化为低维有些物理问题的背景是建构在三维空间上,由于学生的空间想象能力达不到应有的要求,因而在分析问题和解决问
The order reduction strategy is to adopt effective methods and techniques to reduce the order of the relevant factors in the problem to be solved, so as to achieve the goal of making things difficult and easy, and simplifying the complexity, thereby increasing the benefit of problem solving. To: transform high-dimensional issues into low-dimensional issues, convert multiple issues into unit problems, convert multi-body problems into individual problems, turn multi-transition problems into one-way problems, etc. The following examples are given for your reference. The background of high-dimensional transformation into low-dimensional and some physical problems is constructed in three-dimensional space. Because students’ spatial imagination capacity cannot meet the requirements, they are analyzing problems and solving problems.