一、问题的提出微积分的创立是数学发展中的里程碑,它的发展和广泛应用开创了向近代数学过渡的新时期,为研究变量和函数提供了重要的方法和手段.导数、积分都是微积分的核心概念,它们有极其丰富的实际背景和广泛的应用.新课程改革后,人教A版普通高中新课程标准实验教科书选修2-2新增了《导数及其应用》这一章,而《平均变化率》是本章的第一节,很多老师为了追求分数最高化,不注意这一节内容的学习,甚至 First, the problem raised Calculus was founded in mathematics development milestone, its development and extensive application of the transition to modern mathematics created a new era for the study of variables and functions provide an important method and means of derivatives, integrals are Calculus of the core concepts, they have extremely rich practical background and a wide range of applications.After the reform of the new curriculum, people teach A version of the ordinary high school new curriculum standard experimental textbook elective 2-2 new “derivative and its application” this chapter , And the “average rate of change” is the first section of this chapter, many teachers in pursuit of the highest score, do not pay attention to the learning of this section, or even