小学生的抽象逻辑思维需要在感性材料的支持下才能进行，在教学中应加强实践活动，通过生动形象的感性材料和语言描述再现数学知识的发生、发展过程，使抽象的数学知识与学生原有的认知结构建立联系，最终转化成为学生的认知结构。长方体的认识是学生的认识水平由平面向立体的 The abstract logical thinking of pupils needs to be carried out with the support of sensuous materials. In teaching, practical activities should be strengthened to describe the occurrence and development of mathematical knowledge through vivid images and language description, to make the abstract mathematical knowledge and students' Cognitive structure to establish contact, eventually transformed into a student's cognitive structure. Cuboid awareness is the level of awareness of students from the plane to the three-dimensional