有理数是中小学数学衔接的一座桥梁 .要想顺利地从小学数学过渡到初中来 ,学好有理数是关键 .要想学好有理数 ,则必须抓住以下一些关键性的问题 .　　一、明确相依关系“相依关系”喻比“互为相反数” ,二者相互依存 ,又似乎相互对立 .要想正确理解互为相反数 ,必须对以下两个 Rational numbers are a bridge between mathematics convergence in primary and secondary schools. To successfully transition from elementary school mathematics to junior high school, learning rational numbers is the key. If you want to learn rational numbers, you must grasp the following key issues. First, a clear dependency relationship “dependency The relationship ”metaphor" is mutually opposite, and the two depend on each other and they seem to be mutually antagonistic. To understand correctly the opposite number, you must have the following two