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拜读沈老师的课例，一节生动活泼的教学课浮现在眼前，从中可见，沈老师具有较强的分析、组织教材，驾御课堂教学的能力．掩卷而思，笔者认为本节课成功之处有三，需商讨之处有二．１．成功之处１．１ 重视知识联系，突出知识结构本节内容是初中锐角三角函数的扩展，高中三角
After reading the lesson of Mr. Shen, a lively teaching lesson emerged. It can be seen from this that Teacher Shen has strong analytical and organizational teaching materials and can control the ability of classroom teaching. To think about it, the author thinks that there are three successes in this lesson and there are two points to discuss. 1. Success 1.1 Attach importance to knowledge and highlight the structure of knowledge This section is the expansion of the triangular function of junior high school acute angle, high school triangle