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苏教版五上第二单元多边形的面积单元,在教学完三角形面积计算之后有这样一道习题:题目的要求是:下面哪些图形的面积是平行四边形面积的一半?为什么?对于此题的理解,如果一味追求答案,那么学生能够通过结合刚学的平行四边形和三角形面积计算来找到正确答案,但总觉得一道题就这么做似乎太简单了。但如果细细思考,可以通过对不同的图进行对比而认识得更深刻一些。不同的教师对此题的理解
Supiao version of the fifth unit of polygons on the second unit area, after the calculation of the triangle area in the teaching have such a problem: the title of the question is: Which of the following graphics area is the area of one half parallelogram? Why? For this understanding, If you blindly pursue the answer, then students can find the right answer by combining the squares and triangles they just learned, but it seems too easy to think of a single question. However, if you think carefully, you can understand more deeply by comparing different figures. Different teachers understand this question