多年来,在中学数学教学中,流传着一些看似正确的实则错误的结论,这些错误的结论在某些教辅资料中时有所见,而我们有些教师对此也是深信不疑、照本宣科,其结果必然是误人子弟、贻笑大方,本人不揣冒昧,选取了其中一些典型“结论”加以剖析,作为警示。 Over the years, in mathematics teaching in middle schools, there have been some seemingly correct and actual mistaken conclusions. These erroneous conclusions have been seen in some supplementary materials, and some of our teachers are also convinced and scripted to do so. The result must be misunderstood children and laughter. I am not afraid to take the liberty and select some of the typical “conclusions” to analyze and use them as warnings.