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在操作中分析数量关系 由于应用题本身具有复杂性、抽象性和多变性,所以应用题的教学历来是数学教学中的一个老大难问题,难就难在不容易使学生理解已知数量关系之间、已知数量与未知数量之间的数量关系。而实际操作,可以使学生从整体上去感知应用题的数量关系,特别是那些较隐蔽的数量关系,能在动手操作的过程中具体、形象地呈现在学生的面前,形成深刻的表象。这对学生了解题意,分析数量关系,理清解题思路,以及提高学生解答应用题的能力,都有无可置疑的作用。
Analysis of the relationship between the number of operations Because of the complexity, abstraction and variability of application problems, teaching of application problems has always been a chronic problem in mathematics teaching, and it is difficult to make it difficult for students to understand the relationship between the known quantity Between, the number of known and unknown quantitative relationship between quantity. The actual operation, can make students perceive the relationship between the number of questions on the whole, especially those more subtle relationship between quantity, in the hands-on process of concrete, vividly presented in front of students, the formation of a profound appearance. This is a doubtless effect for students to understand questions, analyze quantitative relationships, clarify their thinking and improve their ability to answer questions.