在教学中,数学思想的渗透,一直是我们所追求的较高境界,而整体思想又是数学思想的一种重要思想。所谓整体思想是指在研究和解决有关数学问题时,通过研究问题的整体形式、整体结构、整体特征,从而对问题进行整体处理的解题方法。在初中阶段,我们也经常运用这一方法来解决一些许多按常规方法不可解或看似比较麻烦的问题,能达到化繁为简,由难变易的目的,这种方法 In teaching, the penetration of mathematical ideas has always been the higher state we seek, and the whole idea is an important thought of mathematical thought. The so-called holistic thinking refers to solving the problem of mathematics by studying the overall form, the overall structure, the overall characteristics, so as to solve the problem overall approach to problem solving. In the junior middle school, we also often use this method to solve many problems that can not be solved by conventional methods or seemingly too troublesome, and can achieve the purpose of simplifying and changing easily. This method