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函数一直是数学高考的热门考点,无论是选择、填空还是解答题,都有与函数相关的题目.这也给函数教学带来了不小的压力.教师既要帮助学生区分并掌握基本的函数形式,又要培养他们解决疑难函数题目的能力.这就需要教师积极探索科学合理的函数教学方法.一、强调基本概念函数的形式千变万化,也是学生学习时感到困难的原因之一.对此,教师要教会学生以不变应万变的方法,把握函数的基本规律.函数的基本知识点一般包括:函数的定义域、单调性、奇偶性等.学生要观察和分析函数的变化趋势、变化特点,都必须建立在以上知识点的基础之上.例如,在讲“单调性”时,教师可以从学生在初中阶段已经学过的一次函数和反比例函数入手,让学生观察函数y=2
Function has always been a hot test of math entrance, whether it is the choice, fill in the blank or answer questions, and the function-related topics.This also brings a lot of pressure on the function of teaching teachers not only to help students distinguish and master the basic functions Form, but also to develop their ability to solve the problem of difficult functions.This requires teachers to actively explore scientific and rational function of teaching methods.First, emphasizing the concept of basic concepts of ever-changing forms of functions, but also one of the reasons students find it difficult to learn.To this end, Teachers should teach the students to grasp the basic rules of the function in an unchanged way.The basic knowledge points of the function generally include the domain of the function, monotonicity, parity, etc. The students should observe and analyze the trend of the function, change Characteristics, must be based on the above points of knowledge.For example, in terms of “monotonous”, teachers can learn from the students in the junior high school phase function and inverse function to start, let the students observe the function y = 2