有理数是整个代数的基础,有理数的运算是初等数学的基本运算,可以说有理数一章是整个初等数学的奠基石,它所蕴含的丰富内容深刻地反映了中学阶段许多重要基本数学思想方法。教师在授课时除了加强数学 Rational numbers are the basis of the whole algebra. The operation of rational numbers is the basic operation of elementary mathematics. It can be said that the rational number chapter is the cornerstone of the whole elementary mathematics. The rich content it contains profoundly reflects many important basic mathematical thought methods in the middle school stage. Teachers in addition to strengthening mathematics while teaching