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“循序渐进、螺旋上升”是小学数学教材编排的重要特点。小学数学的许多知识都是从学生已有的经验出发,采用逐步拓展、渐进深化的模式。前面的知识为后续内容做铺垫,后续内容又是在前一个内容的基础上逐步发展得到。
“Step by step, spiral up ” is an important feature of the primary mathematics textbook layout. Much of the knowledge of elementary mathematics is based on the students’ existing experiences and adopts a model of gradual expansion and gradual deepening. The front of the knowledge to pave the way for subsequent content, follow-up content is based on the previous content gradually developed.