1利用质疑,提出问题教师向同学们叙述了这样一件事情.在某大学的一次报告会上,一位德国教授随手拿起一张A 4纸,他说:“我们用这样的方法(图1~图3)就折叠出了一个正五边形”,我边说边用A 4纸折叠出了一个五边形.图1图2图3大家试一试,看图中的MNQRD是否为正五边形.沉默片刻,有的 1 Use questioning to ask questions Teachers describe such a thing to classmates. At a university report, a German professor picks up an A4 paper and he says: “We use this method (fig. 1~Figure 3) Fold out a regular pentagon.” As I said, I folded out a pentagon with A4 paper. Figure 1 Figure 2 Figure 3 Let’s try to see if the MNQRD in the figure is Regular pentagon. Silent moments, some