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苏科版八年级下册教材中,《图形相似》的第2节教学内容为“黄金分割”.“黄金分割”在原来教材中是作为一个知识点放在教学过程中的,现今教材把它单独作为一节,体现了黄金分割在数学中的重要作用.教材内容以三个例子引入,其中“芭蕾舞演员”与“上海东方明珠电视塔”都没有产生预设问题,而在利用交流中的调查结果引入概念时,实际教学中却产生了与预设的冲突.现将冲突记录如下.教材编写内容教材中编写的交流内容是,请与同学交流上一节习题中的一个题目“你最喜欢的矩形”的调查结果,看看多数同学选择的是哪一个矩形.
Su Ke version of the eighth grade textbook, the “graphics similar” section 2 teaching content “golden section ” “golden section ” in the original textbook as a knowledge point on the teaching process, Today’s teaching material treats it separately as a section, which shows the important function of golden section in mathematics. The content of the teaching material is introduced by three examples, in which “ballerina” and “Shanghai Oriental Pearl TV Tower” do not produce the default problem , But the introduction of the concept of using the results of the exchange of communication, the actual teaching has produced a conflict with the preset conflict records are now recorded as follows. The content of the compilation of teaching materials written in the exchange is, please share with the students the previous exercise In a topic “your favorite rectangle ” survey results to see which of the rectangles most students choose.