2025年教学资料:4.1角的概念的推广
授课题目 4.1角的概念的推广 选用教材 高等教育出版社《数学》 (基础模块上册) 授课时长 2课时 授课类型 新授课 教学提示 本课通过熟悉的情境,感知推广角的必要性,从运动的角度定义角,并引进正角、负角和零角,从而将角的概念推广到任意角,进而学习终边相同的角、象限角以及界限角等;在学习推广角的意义和任意角所在的象限的基础上进而识别终边相同的角,学习用集合语言表示终边相同的角.教学目标 会结合熟悉的实例描述角的相关概念,能举例说明正角、负角、零角、象限角、终边相同的角等,能根据图像判断角是正角、负角还是零角,并能根据给出的角的度数和角的始边确定角的终边的位置,并判断角是第几象限的角,逐步提...
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