“对立统一”“质量互变”“辩证否定”是唯物辩证法的三大规律,本文试图结合具体教学案例,谈谈如何从这三个维度挖掘数学内容中思辨的学习素材,发展学生的辩证思维能力。一、在“对立统一”的素材中发展辩证思维能力数学的概念、性质、命题之间充满着对立统一的规律,如加与减、乘与除、圆与方、正与负、顺向与逆向、无限与有限等。教学实践中,很多有经验的 “The Unity of Opposites ” “Quality Mutual Change ” “Dialectical Negation ” is the three laws of materialist dialectics. This article attempts to combine specific teaching cases to talk about how to excavate the material of speculative study in mathematics content from these three dimensions , Develop students’ dialectical thinking ability. First, in the “unity of opposites” in the development of dialectical thinking ability mathematical concepts, nature, propositions filled with the law of unity of opposites, such as plus and minus, multiply and divide, round and square, positive and negative, Shun To the contrary, unlimited and limited. Teaching practice, many experienced