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数形结合是重要的数学思想方法之一,就是“以形释数”或“以数释形”。以形释数,即以“形”为手段,用它的直观形象性来刻画数的概念、揭示数的规律、分析数量关系,使抽象的数学直观起来,进而促进学生准确把握数学问题的本质,并能数学地、富有创造地展开思考。一、刻画数量关系,化繁为简数学的抽象性与学生思维的直观形象性历来是小学数学教学中的主要矛盾之一,加之学生生活经验还不够丰富,思维水平处于发展状态之中,对数量关系的理解往往是浅
Number combination is one of the important mathematical thinking methods, that is, “to explain the number of” or “to the number of interpretation ”. To explain the number of numbers, that is, “form ” as a means to use its visual image to describe the concept of numbers, revealing the law of numbers, the number of relations, the abstract mathematics intuitive, and then promote students to accurately grasp the mathematical problems The nature of mathematics, and creative thinking. I. Describing the relationship between quantity and quantity, reducing the complexity and simplifying the abstraction of mathematics and the intuitive and vivid image of students ’thinking have always been one of the major contradictions in primary mathematics teaching. In addition, the students’ life experiences are not yet rich enough and their thinking level is in a state of development. The understanding of quantitative relationships is often shallow