在解决某些数学问题的过程中 ,通过对条件与结论的充分剖析 ,有时会联想出一种适当的辅助模型 ,如某种数量关系 ,某个直观图形 ,或者某一反例 ,以此促成命题转换 ,产生新的解题方法 ,这种思维方法的特点就是“构造” ,故称为构造法 .运用构造法解题的基础是建好网络化的知识结 In the process of solving certain mathematical problems, through adequate analysis of the conditions and conclusions, sometimes an appropriate auxiliary model is thought out, such as a quantitative relationship, an intuitive graphic, or a counterexample, to promote the proposition. The transformation creates a new problem-solving method. The characteristic of this thinking method is “construction”. It is called the construction method. The basis for applying the construction method is to build a network of knowledge.