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一、教材分析本节课的内容是人教版七年级下册第七章“平面直角坐标系”的第一节“有序数对”。“平面直角坐标系”的学习为后面研究函数图象打下坚实的基础,然而这节“有序数对”又是学习“平面直角坐标系”的基础。学习“有序数对”能将几何图形与数联系起来,建立数形结合。学生学好这节是学好本章的关键。教材从生活中的实例抽象出有序数对,然后由有序数对引出坐标系,这种由具体到抽象,由浅入深的方法符合学生的认知规律。
First, the textbook analysis The content of this lesson is the seventh chapter of the PEP (seventh grade) “the first section of the plane Cartesian coordinate system” “ordinal pairs of ”. The study of Plane Cartesian coordinate system lays a solid foundation for the study of functional images, however, this section of “ordinal pairs” is the basis for learning “Plane Cartesian coordinate system.” Learning “ordinal pairs ” can be geometric figures associated with the number of establish a few forms of combination. Students learn this section is the key to learning this chapter. The teaching material abstracts the ordinal pairs from the examples in life, and then leads the coordinate system from the ordinal pairs, which is from the concrete to the abstract and the shallow to the deep to accord with the students’ cognitive rules.