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苏教版六年级上册“分数乘法”单元中,十分重视引导学生用图形表示分数及相应的分数乘法算式,鼓励学生联系分数的意义并借助几何直观探索计算方法、理解计算原理。这样的教学安排值得我们认真研究、细心体会。当然,如何让教学更好地体现教材的编排意图自然也是需要反复揣摩的。在这个单元的“整理与复习”中,有如下一个问题(见图1)。
In the sixth grade of the Sujiao edition, the “Multiplication Factor” unit attaches great importance to guide students to use graphical representation of scores and the corresponding score multiplication formula, encourage students to contact the meaning of the score and explore the calculation method with geometric intuition, understand the calculation principle. Such teaching arrangements deserve our careful study and careful understanding. Of course, how to make teaching to better reflect the intent of the textbook layout also need to repeatedly try to figure out. In this unit “finishing and review ”, the following question (see Figure 1).