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小数除法是五年级上册的教学重点与难点。这部分知识容量大,计算过程较为复杂。教学时,可以采取如下步骤:1.学习从疑问开始呈现例4问题情境,学生感知到具体丰富的信息材料,形成了清晰的表象,根据数量关系列出算式。教师质疑:这道题和我们学过的小数除法有什么不同?学生被这一疑问所刺激,很容易投入到积极的思考之中。前面学习的是除数是整数的小数除法,而这道题却是小数除以小数。除数是整数的小数除法的计算方法是根据整数除法推导出来的,以旧迎新嘛。小数除以
Fractional division is the fifth grade of the teaching focus and difficulty. This part of the knowledge of large capacity, the calculation process is more complicated. Teaching, you can take the following steps: 1. Learning from the question presented Example 4 problem situations, the students perceived a specific rich information material, forming a clear appearance, according to the number of relations listed in the formula. The teacher questioned: What is the difference between this question and the decimal division we have learned? Students are motivated by this question and are easily put into positive thinking. In front of the study is the divisor is an integer fractional division, and this question is the decimal divided by the decimal. The divisor is an integer fractional division of the calculation method is derived according to the integer division, the old welcome new thing. Divide the decimals by