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五年级上册中除第一单元“扩大”的模型、“缩小”的模型、第三单元“三视图”模型是对以前建立模型的运用和延伸外,其余全部是需要新建立的数学模型。其中概念模型有:①小数乘法意义的模型;②循环小数模型;③无限不循环小数模型;④速度差、速度和的模型;⑤方程的模型;⑥方程的解的模型;⑦古典概率的模型;⑧中位数的模型。方法模型有:①小数乘法计算方法的模型;②小数除法
Fifth grade in addition to the first unit of the first unit “expand ” model “reduced ” model, the third unit “three view ” model is the use of the model and the extension of the previous establishment, the rest all need new Established mathematical model. Among them, the conceptual models are as follows: ① The model of fractional multiplication; ② Recursive fractional model; ③ Infinite noncyclic fractional model; ④ Speed difference and speed sum model; ⑤ Equation model; ; ⑧ median model. Method models are: ① decimal multiplication method of calculating the model; ② decimal division