论文部分内容阅读
函数是初中数学代数中的重要内容,它是描述和研究世界变化规律的重要模型,具有较强的综合性。二次函数的章节内容,不仅是初中数学的重点内容,还是高中数学学习的基础。因此,在初中数学课堂中,如何上好二次函数非常重要。笔者结合初中教学实践,谈谈二次函数课堂教学的一点体会。一、注意二次项系数的教学在课堂教学过程中,要想让学生更直观地理解二次函数的概念与本质,笔者举了如下例子,凡是形如y=ax2+bx+c(其中a,b,c
Function is an important part of junior high school mathematics algebra. It is an important model to describe and study the changing law of the world and has strong comprehensiveness. The chapter content of the quadratic function is not only the key content of junior high school mathematics, but also the basis of high school mathematics learning. Therefore, in the junior high school mathematics classroom, how to improve the quadratic function is very important. The author combines junior high school teaching practice, talk about the secondary function classroom teaching experience. First, pay attention to the teaching of quadratic coefficient In the classroom teaching process, in order to allow students to more intuitive understanding of the concept and essence of quadratic function, the author gives the following example, any shape such as y = ax2 + bx + c (where a , b, c