初中是一个学生学力养成的黄金时段。它衔接着小学与高中两个学习阶段,起着承上启下的重要作用。就数学学习而言,更是如此,不仅是因为初中阶段需要学生接受较为系统的数学基础知识,掌握一些基础的数学技能方法,也要培养一定的数学思维品质。更重要的是,初中阶段的数学学习很大程度上决定了学生在数学学习上的学力,甚至影响到学生将来的数学学习等各方面。数学是一门循序渐进的学科,学科知识与技能之间有着密切的联系。因而常有人认为数学学科是一门一环扣一环的学科,绝对不可遗落任何一环。这就要求我们在教学 Junior high school is a golden age of student learning. It connects two primary and secondary learning stages, playing an important role in connecting. In terms of maths learning, this is even more so, not only because of the need for students to take a more systematic basic maths knowledge, to master some basic math skills and methods, but also to cultivate certain mathematical thinking qualities. More importantly, the mathematics learning in the junior middle school determines the students’ learning ability in mathematics to a great extent, and even influences the future maths learning of the students. Mathematics is a gradual subject, subject knowledge and skills are closely linked. Therefore, some people often think that mathematics is a one-stop chain of disciplines, must not be left behind in any one. This requires us to teach