以题解题借力打力--一道教材习题的应用

• 作 者: 刘族刚
• 机 构: 武汉市吴家山中学,
• 出 处: 语数外学习(高中版上旬)
• 发表日期: 2015年07期
• 关键词: 解题 借力打力 教材 题海战术 高考试题 清解法 规律性 经典 功效 公式

教材习题堪称习题的经典,我们不仅要弄清解法,如果还能再总结并掌握带有规律性的实用结论(如公式),那么往往能避免题海战术,达到用题解题、借力打力的功效.本文以一道教材习题结论为例,谈谈它在解教材习题与高考试题中的作用.人教课标选修2-2P60B2:如图,一桥拱的形状为抛物线,已知该抛物线的拱高为常数h,宽为常数b,求证:抛物线拱的面积为S=

Textbook exercises can be called classic exercises, we must not only understand the solution, if we can then summarize and grasp the practical conclusions with regularity (such as formula), then often can avoid the problem of sea tactics, to solve problems, leveraging The effectiveness of force.This paper takes a textbook exercises as an example to talk about it in the solution textbook exercises and the role of the college entrance examination questions.People teach teaching elective 2-2P60B2: Figure, a bridge arch shape is a parabola, known The parabolic arch height is constant h, width b constant, verify: parabolic arch area S =