证明,是几何学习的精髓,要学好证明需要有一个循序渐进的过程,其中学会说理是学好证明的关键.为此,苏科版《数学》教科书安排了1课时说理的内容.学好这部分内容将为学习证明打下坚实的基础,为今后用合情推理探索结论,用演绎推理证明结论积累基本活动经验.因此,我们要精心设计有效的数学活动,使学生在活动中增强合情推理和演绎推理的能力,提高说理能力. Proof is the essence of geometry learning. To learn how to prove it needs to have a gradual process, in which learning theory is the key to learning the proof. To this end, the Suko version of the “Mathematics” textbook has arranged the content of 1 lesson. This will be learned. To lay a solid foundation for learning proof, to explore conclusions with reasonable reasoning in the future, and to use deductive reasoning to prove that conclusions accumulate basic activity experience. Therefore, we must meticulously design effective mathematics activities so that students can enhance plausible reasoning and deductive reasoning in their activities. Ability to improve reasoning skills.