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“数缺形时少直观,形缺数时难入微.”数学中大量数的问题后面都隐含着形的信息,图形的特征上也体现着数的关系.我们要将抽象、复杂的数量关系,通过形的形象、直观揭示出来,来达到“数促形”的目的.对于一些含有几何背景的题,若能数中思形,以形助数,则往往可以简捷的解决问题,得出正确的结果.在平常的教学、研究中积累并总结了解决中考难题的一些方法,如猜想法、直接法、数形结合法、特例法、整体法、观察法.
“When the number of lack of shape less intuitive, when the number of missing form is difficult. ” A large number of mathematical problems behind the hidden information, the characteristics of the figure also reflects the relationship between the number of we want to abstract, complex Of the number of relations, through the shape of the image, intuitively revealed, to achieve the purpose of Solve the problem and get the correct result.In the usual teaching and research, we have accumulated and summarized some methods to solve the difficult problem of the senior high school entrance examination, such as the conjecture method, the direct method, the combination of the number method, the special method, the whole method, the observation method.