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三角函数是初等数学中基本初等函数之一,是描述周期现象的重要数学模型.本节课的教学内容选自人教A版普通高中课程标准实验教科书数学《必修4》第一章第五节“函数y=Asin(ωx+φ)的图象”(第1课时).笔者就课堂
Trigonometric function is one of the elementary elementary functions in elementary mathematics and is an important mathematical model for describing periodic phenomena. The teaching content of this course is selected from the “A” version of the ordinary high school curriculum standard experimental textbook math “Compulsory 4” Chapter 1, Section V “Function y = Image of Asin (ωx + φ)” (Lesson 1)