一、内容分析《有理数及其运算》一章首先介绍有理数的基本概念,然后从低级到高级依次讲述有理数的加、减、乘、除及乘方运算的意义、法则和方法,并介绍了用计算机进行简单的数的运算方法。二、学习方法点拨1.本章所学的“数”是一种新的数———负数。负数的含义与学生生活经 First, the content analysis “rational numbers and its operation” chapter first introduces the basic concept of rational numbers, and then from the low level to the high level in order to describe the rational number of addition, subtraction, multiplication, division and power operation of the meaning, rules and methods, and introduced the use of Computers perform simple arithmetic operations. Second, learning methods dial 1. The “number” learned in this chapter is a new number - negative numbers. The meaning of negative numbers and student life