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一、教材分析1.教材的地位和作用。本节课是人教课标A版选修4-4第二讲第一小节第二课时;它是用参数方程表示特殊曲线的具体体现;它是建立其它特殊曲线的参数方程的基础;它揭示了用换元法解题的一种思维过程。2.教学重点.难点。
First, the textbook analysis 1. The status and role of teaching materials. This lesson is a lesson taught by the A version of the elective 4-4 Second Lecture 1 second lesson; it is a parametric equation that represents the specific curve of a concrete manifestation; it is to establish other special curve equation of the parameters of the foundation; it reveals The problem of using yuan to solve a thinking process. 2. Teaching focus. Difficulties.