读《小学数学》88年第12期潘正矩老师的文章《浅谈角的等式的证明及其教学》后,深受启发。我根据平时教学总结出《浅谈角的不等式的证明方法》,权作该文的补充。证明角的不等式的关键,在于抓住“条件”与“求证”之间的内在联系和结构特征,联系有关的基础知识,进行适当的变换,虽无固 After reading the article “On the Proof of Angle Equations and Teaching” of “Primary Mathematics” in the 12th issue of the 88th issue of Pan Zhengji, he was deeply inspired. Based on the usual teaching, I summed up the “method of inquiring about the inequality of the angle” and added it to the article. The key to proving the inequality of angles is to grasp the intrinsic relations and structural characteristics between “conditions” and “proof verification,” and to link relevant basic knowledge and make appropriate transformations.