数学公式是撇开具体事物的质的方面 ,抽出其量的方面进行研究得出的数量关系 ,它应用广泛 ,推导方法具有代表性 ,因此常被比喻为“数量关系的精髓” .它是解题的有力工具 ,正确思维的基础 ,形成运算技能技巧的“桥梁” .课本的章节小结中常看到这样的教学要求 :掌握某数学公式 Mathematical formulas are the qualitative aspects of concrete things, and they draw out quantitative aspects of their quantitative research. They are widely used, and their derivation methods are representative. Therefore, mathematical formulas are often compared to “the essence of quantitative relationships.” It is a problem-solving problem. The powerful tools, the basis of correct thinking, and the formation of skills and skills in the “bridge”. Textbook chapter summary often see such teaching requirements: master a mathematical formula