数形结合是中学数学极为重要的思想方法之一。以形助数,可使许多抽象的概念和复杂的关系直观化、形象化、简单化;而以数助形,借助数量的计算和分析,可使问题的解决严谨化、精确化等等。一、导向功能数形结合对许多问题的求解,有着明显的导向作用。注意数形结合的运用,无疑有助于启迪思路,理顺 The combination of number and shape is one of the most important ways of thinking in middle school mathematics. The number of forms helps to visualize, visualize, and simplify many abstract concepts and complex relationships. With the help of numbers and calculation and analysis of quantities, the solution to problems can be rigorous, precise, and so on. First, the integration of guidance functions and numbers solves many problems and has a clear guiding role. Pay attention to the use of number and shape combination, undoubtedly help enlighten ideas, straighten out