图形概念的建立,一般分成四个方面:图形名称的理解、图形表象的建立、图形特征的发现和图形的定义。以上四个方面构成了图形认识所特有的相互依存的整体。在教学中,对于这四个方面的正确理解,是教师有效进行图形概念教学的基础。 The establishment of the concept of graphics is generally divided into four aspects: the understanding of the name of the graphic, the establishment of the graphic appearance, the discovery of the graphic features and the definition of the graphic. The above four aspects constitute the graphic interdependence of the overall understanding of the unique. In teaching, the correct understanding of these four aspects is the basis for effective teaching of graphic concepts by teachers.