论文部分内容阅读
教材分析圆是常见的基本几何图形之一,圆的许多性质,较集中的反映了事物内部量变与质变之间的关系,特殊到一般之间的关系.“圆与圆的位置关系”是人教版九年级教材第二十四章的内容,从知识结构来看,它是建立在点与圆的位置关系和直线与圆的位置关系的学习基础之上,是前两节知识的延续,也是对圆的性质的进一步完善.从学习过程与技能来看,学生要亲自动手实践,自主探究圆和圆的位置关系,观察分
Textbook analysis circle is one of the common basic geometric shapes, many of the nature of the circle, more concentrated reflects the relationship between quantitative and qualitative changes in things, from the special to the general. "The relationship between the location of the circle and the circle It is the content of the twenty-fourth chapter of the ninth grade textbooks of the PEP. From the perspective of the knowledge structure, it is based on the learning of the positional relationship between points and circles and the positional relationship between lines and circles, Continuation, but also on the nature of the circle to further improve.From the learning process and skills point of view, students should personally practice, to explore the location of the circle and the circular relationship, observation points