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苏教版教材六(下)总复习单元中有这样一道题(第102页11题):11.用16根1米长的木条靠一面墙围一块长方形菜地。怎样围面积最大?小组合作,用16根小棒围一围,算一算,把结果填入下表。如果用24根这样的木条来围,怎样围面积最大?在备课中,感觉此题似曾相识,作为《中小学数学》杂志的一名忠实读者,我翻阅了以往所订的杂志,竟然发现有7篇文章对这类问题进行过深入研究,阐述了各自的观点。仔细读来,深受启发。
There is such a problem in the General Review Unit of the Supayan version of the textbook (Page 11, No. 11): 11. Use 16 strips of wood one meter long to enclose a rectangular vegetable plot on a wall. How to enclose the largest area? Group cooperation, with 16 small stick Wai, calculate the calculation, the results fill in the table below. If you use 24 such wood fence around, how to encircle the area? In lesson preparation, I feel this is like a deja vu, as a loyal reader of “primary and secondary mathematics” magazine, I read through the magazine, even found that there are Seven articles conducted in-depth research on such issues and elaborated their own points of view. Read carefully, inspired.