说明:对称是指依据一假设的中心线(或中心点),在其左右、上下或周围配置同形、同色、同量的纹样所组成的形式,它的特点是稳重、庄严、整齐。花、草、树、动物、建筑物、日常用品、装饰品等许多物体都具有对称美,这为幼儿初步了解、感受对称美创造了良好的条件。根据对称概念,我们一般把依据一中心线在其左右或上下配置相同图案的形式称为“轴对称”,又称“镜映式对称”(如图一),依据一中心点在其周围配置同样图案的形式称为“点对称”(如图二)。目的:1.初步理解对称的概念,知道对称一般分为点对称和轴对称两种 Description: Symmetry is based on a hypothetical centerline (or center point), in its left and right, up and down or configuration configuration of the same color, the same color, the same amount of patterns, which is characterized by a steady, solemn, neat. Many objects such as flowers, grasses, trees, animals, buildings, daily necessities and decorations have a symmetrical beauty. This creates a good condition for infants to understand and feel symmetrical beauty. According to the concept of symmetry, we generally refer to the form of “axisymmetric” or “mirror symmetry” (see Fig. 1) based on a central line with the same pattern arranged at the right and left or above and around it according to a central point The same pattern is called “point symmetry” (Figure 2). Objectives: 1. Preliminary understanding of the concept of symmetry, that symmetry is generally divided into two kinds of point symmetry and axisymmetric