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教材中的例题大都是具有完备的条件和固定的结论的封闭题 ,基本上是为了使学生巩固所学知识 ,引起认知结构的同化而设计的 .为了使数学教学更多地体现探究精神 ,在教学过程中适当地进行开放式教学是有必要的 ,下面是一道封闭型例题变为开放型题目的教学设计 .题目 已知 ｜ａ｜
The examples in the textbooks are mostly closed questions with complete conditions and fixed conclusions. They are basically designed to enable students to consolidate the knowledge they have learned and to cause the assimilation of cognitive structures. In order to make mathematics teaching reflect the spirit of inquiry more, It is necessary to carry out open teaching appropriately in the teaching process. The following is a teaching design in which a closed-type example turns into an open-type topic. Topics Known|a|