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课题:正多边边知圆教学目的: (1)在正确理解正多边形的定义基础上,掌握圆内接和外切正多边形定理及其证明方法。 (2)通过本课定理教学过程中的启发和诱导,培养学生的观察能力和逻辑推理能力。教学过程: 一、讲解定义 1.阅读课文:今天的教学内容是正多边形和圆。什么叫做正多边形呢?〔要求同学通过阅读课本(P_(52)-P_(53)顺5行)来回答。〕 2.提问:(1)什么叫做正多边形?(学
Topic: Positive Polygonal Circular Teaching Objectives: (1) Based on a correct understanding of the definition of regular polygons, master the incircular and exo-circular regular polygon theorems and their proof methods. (2) Through the inspiration and induction in the teaching of the theorem of this lesson, develop students’ observation ability and logical reasoning ability. Teaching process: First, explain the definition 1. Read the text: Today’s teaching content is a regular polygon and circle. What is a regular polygon? (The students are asked to answer the text by reading the text (P_(52)-P_(53) line 5). ] 2. Question: (1) What is a regular polygon?