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一、教学设计1.基本思考1.1要把“三角函数”的内容视为“建构刻画周期变化模型”的学习过程这节课要放到整本书中去看.细读课标和教材,笔者确立了自己对这节课的定位:要把“刻画周期变化模型的寻找”作为“三角函数”学习的方向和目标.什么意思?新课程前,周期性是依附三角函数的,是附属品;新课程后则反之,是“周期性”在前,是它的“呼唤”和“招引”催生了三角函数的学习动机与要求.可以这样说:三角函数的学习要围绕“周期性”这一核
First, the teaching design 1 basic thinking 1.1 should be “trigonometric function ” as the “construction of the description of the cycle of change model ” learning process This class should be placed throughout the book to see. And teaching materials, the author has established his own position on this lesson: “The search for” characterization of the periodic change model “should be taken as the direction and goal of” trigonometric function. “What does it mean? Before the new curriculum, the periodicity is dependent on Trigonometric function is an accessory; after the new curriculum, on the contrary, is ”cyclical “ in the past, is its ”call “ and ”attracting “ gave birth to trigonometric function of learning motivation and requirements. Says: The study of trigonometric functions needs to focus on the ”periodic" core