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反比例函数与几何图形相结合问题是近年来中考的热点,此种题型往往具有一定难度.本文介绍一次课堂教学中,教师引导学生在反比例函数中探索几何模型,让学生在解题中发现规律,提高能力的案例,供赏析.一、双基的准备与落实师:看到图1(∠CAB=∠CBE=∠BDE=90°,CB=BE),你会想到哪个几何模型,得到哪些结论?
The problem of combination of inverse proportion function and geometric figure is the hot spot of the senior high school entrance examination in recent years.This paper introduces a class teaching, the teacher guides the student to explore the geometric model in the inverse proportion function, lets the student discover the law in solving the problem , Improve the ability of the case for appreciation. A double base preparation and implementation division: see Figure 1 (∠ CAB = ∠ CBE = ∠ BDE = 90 °, CB = BE), which geometric model you will think of, what in conclusion?