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带分数加减法是分数的加法和减法这一部分知识的难点.往年我按常规的教学模式进行教学,效果都不那么理想,学生难以理解;今年我采取了“迂回”的教学方法,效果较好.“迂回”教学就是充分复习以前学过的有关知识,从中找出最好的解题路径.数学知识一环紧扣一环,相互之间联系极其紧密,因此在对带分数加减法的教学过程中,我充分引导学生去复习相关的数学知识,从中找到独特的解题方法.例如我在教学这部分内容的例1时.在引导学生列出算式1(4/5)+2(2/5)后,再引导学生复习“把带分数化成假分数”的内容,从而引导学生把1(4/5)和2(2/5)化成假分数(1(4/5)=9/5,2(2/5)=12/5),算式就可以化成
With fractional addition and subtraction is the fraction of the addition and subtraction of knowledge of this part of the difficulty .In previous years, I teach according to the conventional teaching mode, the effect is not so ideal, students difficult to understand; this year I adopted a “detour” teaching method, the effect is more Good. “Devious” teaching is to fully review the previously learned knowledge, from which to find the best path to solving problems.Mathematical knowledge a part of a closely linked with each other extremely close, so with the addition and subtraction of scores I teach students to review relevant mathematics and find unique ways to solve them, for example when I was teaching Example 1 of this section, I was guiding the students to list the formula 1 (4/5) +2 (2/5), and then guide the students to review the “fractionalized into fake scores,” so as to guide students to make 1 (4/5) and 2 (2/5) into fake scores 9/5, 2 (2/5) = 12/5), the formula can be turned into