2025年教学资料:4.6 正弦函数的图像和性质
授课题目 4.6 正弦函数的图像和性质 选用教材 高等教育出版社《数学》 (基础模块上册) 授课时长 3课时 授课类型 新授课 教学提示 本课将通过简谐振动形成的曲线,感知正弦曲线的特性,进而学习周期函数的有关知识,以及正弦函数的图像和性质;学习借助代数运算与几何直观,认识正弦函数的图像与性质,以及运用“五点法”画出正弦函数在一个周期上的简图.教学目标 知道描点法画正弦函数在[0,2π]上的图像的步骤,能找出正弦函数在[0,2π]上的图像中关键的五个点,并利用“五点法”作正弦函数相关的函数的图像,逐步提升数形结合的数学思想,逐步提升直观想象等核心素养;能通过正弦曲线分析正弦函数的性质,并利...
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