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数学备课一要备教材,二要备学生,这是永恒的话题。合肥市举办的“第四届初中数学青年教师综合素质大赛”无生上课的课题“命题与证明(第4课时)”(沪科版《义务教育教科书·数学》八年级上册第一章第2节,即教材第80页-第81页的内容),意在用逻辑推理的方法证明三角形内角和定理,即知道证明的意义和证明的必要性,知道证明要合乎逻辑,知道证明的过程可以有不同的表达形式,了解综合法证明的
Mathematics preparation lesson preparation materials, two students, this is the eternal topic. Hefei held “fourth junior high school mathematics young teachers comprehensive quality competition ” no life class topics “proposition and proof (the fourth class time) ” (Shanghai Science and Technology Publishing House, compulsory education textbook mathematics eighth grade Chapter 2, page 80 - page 81) intends to prove the interior angles and theorems of trigonometry by logical reasoning, that is, the meaning of the proof and the necessity of the proof, knowing that the proof is logical to know Proof of the process can have different forms of expression, to understand the comprehensive method of proof