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苏教版小学数学教材三年级下册《认识分数》单元所涉及到的知识是“将一些物体看成一个整体,认识这个整体的几分之一和几分之几”。教学第一课“认识几分之一”时,老师们通常创设一些情境引导学生将目光从“一个物体”向“将一些物体看成一个整体”过渡,帮助学生完成认知结构的调整与重组。并通过对“将一个物体平均分成几份,其中的一份就表示几分之一”的已有知识经验合理迁移,得出“将一些物体看成一个整体,平均分成几
The third part of the Sujiao version of the primary school mathematics textbook ”cognitive score“ unit involves the knowledge is ”a number of objects as a whole, to understand this whole a fraction and a few.“ Teaching Lesson # 1 When you know a few, teachers often create situations that guide students to look and feel their way from ”an object “ to ”see some objects as a whole “ transition to help students complete the recognition Adjustment and reorganization of knowledge structure. And by reasonably moving the existing knowledge of ”dividing an object into several parts, one of which represents a fraction,“ it is concluded that ”some objects are considered as a whole and equally divided into several parts