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本节课是笔者“打造释放学生潜能的教学课堂”专题教研活动中执教的一节观摩课.一、教学目标1.知识与技能(1)让学生经历局部“以直代曲”的过程,理解割线逼近切线的过程;(2)理解割线与切线的概念.2.过程与方法(1)借助几何画板演示,让学生体会“以直代曲”和无限逼近思想;(2)掌握借助割线逼近切线求曲线上一点处切线斜率的方法.3.情感态度与价值观(1)让学生经历概念生成的过程,培养学
This lesson is the author “to create a teaching classroom to release the potential of ” special teaching and research activities in a teaching section.A teaching objectives 1 knowledge and skills (1) to allow students to experience local Understand the concept of secant and tangent .2. Process and methods (1) With the help of geometric drawing board demonstration, let students realize “with direct song ” and infinite approximation (2) Master the method of approximating the tangent to the tangent line at a point on the curve by using the secant.3.Emotional attitude and values (1) Let the students experience the process of concept generation and cultivate