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读了《中学数学》(苏州)1996年第5期刊登的冯永明老师的一文《贯彻动态性原则,优化数学教学》(下简称《文》),本人颇受启发,冯老师从三个方面,就如何贯彻动态性原则,优化数学教学,作了详细阐述。遗憾的是《文》中例3的分析过程中有误,笔者认为有一定的代表性,现作一剖析,并给出两种正确的解法,以期与冯老师商榷。
After reading the article “Performing Dynamic Principles, Optimizing Mathematics Teaching” (hereinafter referred to as “Manuscript”) published by Teacher Feng Yongming in the 5th issue of “Middle School Mathematics” (Suzhou) in 1996, I’m inspired. Teacher Feng is from three aspects. This paper elaborates on how to implement the principle of dynamics and optimize mathematics teaching. Unfortunately, in the analysis of Example 3 in the “Wen”, there is something wrong. I believe that there is a certain degree of representation. I will make an analysis and give two correct solutions to discuss with Professor Feng.