2018年秋七年级数学上册第4章4.3角4.3.1角(听课)课件(新版)新人教版.ppt

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4.3.1 角,知识目标,目标突破,第四章 几何图形初步,总结反思,知识目标,4.3.1 角,1借助实物和几何模型,理解角的概念,会用不同的方法表示角 2通过演示射线绕端点旋转的活动,理解直角、平角和周角的概念 3通过阅读教材和类比时间单位,认识度、分、秒,会对度、分、秒进行简单的换算,4.3.1 角,目标一 会用字母表示角,能确定角的个数,目标突破,4.3.1 角,4.3.1 角,4.3.1 角,4.3.1 角,目标二 会进行直角、平角和周角之间的换算,B,4.3.1 角,4.3.1 角,4.3.1 角,目标三 会对度、分、秒进行换算,4.3.1 角,4.3.1 角,总结反思,4.3.1 角,知识点一 角的概念,两条射线,顶点,边,4.3.1 角,端点,知识点二 角的表示方法,4.3.1 角,知识点三 角度制的换算,4.3.1 角,1分,1秒,360,180,60,60,知识点四 画一个角等于已知角,4.3.1 角,4.3.1 角,4.3.1 角,4.3.1 角,4.3.1 角,

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