平面图形难点分析

• 作 者: 李霞
• 机 构: 江苏省扬州大学附属中学东部分校,
• 出 处: 初中生世界
• 发表日期: 2015年29期
• 关键词: 基本图形 图形的 分类讨论 逻辑推理能力 平面图形 于七 难点分析 图题 等量代换 基图

对于七年级中平面几何的学习,我们需要掌握一些数学基本方法,认识数学基本图形,特别是身边的生活图形,会画简单图形的三视图,培养自己的空间想象能力及简单的逻辑推理能力,为以后学习平面几何和立体几何打下坚实的基础.在这一过程中有一些重点需要同学们特别关注.一、无图题的分类讨论解决没有图形的题目时,一要注意满足条件的图形的多样性;二要注意解决的方法,注意设量法在图形中的体现,使比

For the seventh grade medium plane geometry learning, we need to master some basic math methods, recognize the basic graphics of mathematics, especially the living patterns around, draw three views of simple graphics, develop their own space imagination ability and simple logical reasoning ability, For the future study of plane geometry and solid geometry to lay a solid foundation in this process, there are some key points that need special attention of students.A no pictorial classification discussion to solve the problem without graphics, we must pay attention to meet the conditions of the graphics Diversity; Second, we must pay attention to the solution, pay attention to the amount of law embodied in the graphics, so than