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小学阶段解决问题的基本方式是算术法,基本的数量关系模型,一是求和的关系(部分+部分=整体),二是求积的关系(每份数×份数=总量),具体的表现为加、减、乘、除的意义。算术方法解决问题基本上是根据加减乘除四则运算的含义,分析问题中的数量关系,列出一个算式,这个算式的基本特征是将已知的数量构成算术式使其结果等于所求的数量。大家都知道方程对于学生来说十分陌生,学生已经有了四年的算术法解决问题的经验和思维方式,一下让他们接受一个逆向思维的解方程方法,可以想象会是怎样的结果。在我第
The elementary ways to solve the problem in the elementary school are the arithmetic method and the basic quantitative relationship model. The first one is the relation of summation (part + part = whole) and the second one is the product of multiplication (each copy × number of copies = total quantity). The concrete The performance of add, subtract, multiply, divide the meaning. Arithmetic method to solve the problem is basically based on the meaning of addition, subtraction, multiplication and division of the four operations, the analysis of the relationship between the number of questions, lists a formula, the basic characteristics of this formula is the number of known form the arithmetic equivalent to the number of results . As we all know, equations are very strange to students. Students have had four years of arithmetical experience in solving problems and ways of thinking. Let them accept a solution to the inverse equation of the equation, and imagine what the result would be. In my first