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1 教材分析1.1 整体感知“有理数”在《全日制义务教育数学课程标准(实验稿)》(以下简称《新课标》)中属于“数与代数”领域内的内容.本章是在小学学过整数、分数(包括小数)知识的基础上,进一步学习数并将数域和运算扩展到了有理数域,其内容主要是有理数的有关概念及其运算.本章中引入了负数、数轴、相反数、绝对值等概
1 Textbook Analysis 1.1 The overall perception of “reasonable number” is in the field of “numerical and algebraic” in the “Full-time Compulsory Education Mathematics Curriculum Standard (Experimental Draft)” (hereinafter referred to as “New Curriculum Standard”). After learning about integers and fractions (including decimals) in elementary schools, we further learned the numbers and extended the number-domain operations to the rational number domain. The main content is the concept of rational numbers and its operations. In this chapter, negative numbers, axes, Inverse number, absolute value, etc.