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案例概述本课是初中数学新北师大版八年级下册第六章的内容,教材把探究多边形的内角和、外角和设置成两个课时的内容。备课时,结合学生的学习基础及本课的知识特点将该内容整合成了一个课时,授课过程以学校新课堂模式“三主四步”进行。本课重在让学生在探究的过程中掌握推导多边形的内角和与外角和公式的方法、提倡推导方法的多元化,并能将公式运用在具体的计算和几
Case Summary This lesson is the junior high school mathematics New Beijing Normal University version eighth grade volume sixth chapters, teaching materials to explore the polygon’s inside angle and outside corner and set to two hours of content. During the lesson preparation, the content is integrated into one lesson based on the learning foundation of the students and the knowledge features of the lesson. The teaching process is conducted in the new classroom model of the school. This course focuses on allowing students to master the methods of deriving the polygons’ interior and exterior angles and formulas in the course of inquiry, advocating diversification of derivation methods and applying formulas to specific calculations and