小学数学“图形与几何”的主要内容有:“空间和平面基本图形的认识,图形的性质、分类和度量;图形的平移、旋转、轴对称等。”“核心素养指学生应具备的适应终身发展和社会发展需要的必备品格和关键能力。”曹培英老师认为,“抽象、推理和模型思想构成了数学学科第一层次的核心素养;针对三个内容领域的运算能力、空间观念和数据分析观念,则构成数学学科第二层次的核心素养。”一、经历直观到抽象的分析概括过程,发展空间观念 The main contents of elementary mathematics “Graphics and Geometry ” are: “Understanding of basic graphics of space and plane, nature of graphics, classification and measurement; Graphic translation, rotation, axisymmetry, etc. ” Should have the necessary character and key ability to adapt to the needs of lifelong development and social development. “” According to Professor Cao Peiying, “abstract, reasoning and model thinking constitute the core literacy of the first level of mathematics; for three content fields Ability, concept of space and data analysis, constitute the second level of the core competence of mathematics. ”First, the experience of intuitive to abstract analysis process, the development of space concept