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作图是几何学习的一种重要手段.通过作图,学生可以增强对几何图形的直观感受,获得图形中蕴含的各种几何关系的思维素材,从而对后续分析和解决问题产生直接影响.因此,让学生学会在作图中抓基本要素,明确作图的依据和基本方法,并在复杂图形中分辨出基本图形,是几何教学中提高学生分析和解决问题能力的重要一环.笔者在自己的教学实践中,尝试通过典型几何作图问题的剖析,归纳作图的基本原理,挖掘几何作图模型的辐射功能,收到较好的教学效果.
Drawing is an important means of geometry learning.During drawing, students can enhance the intuitive perception of geometry and obtain the thinking material of various geometric relationships contained in the graph, so as to directly influence the subsequent analysis and problem solving. , So that students learn to grasp the basic elements in the drawing, a clear basis for mapping and basic methods, and in complex graphics to identify the basic graphics, geometry teaching is to improve students ability to analyze and solve an important part of the author in their own In the teaching practice, we try to analyze the typical geometric mapping problem, summarize the basic principle of the drawing, and excavate the radiation function of the geometric drawing model and receive good teaching results.