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一、一次遗憾的教学处理“极坐标系”概念的课堂教学中在笔者试图让学生探究结论:点与表示其位置的极坐标不是一对一的关系,而是一对多的关系时。产生了如下的教学对话:【片段一】学生8:我觉得极坐标系中的角只要
First, a regrettable teaching process “polar coordinate system ” concept in the classroom teaching in the author tried to allow students to explore the conclusion: point and the polar coordinates represent its position is not a one-to-one relationship, but a one-to-many relationship . The following teaching dialogue was produced: [Fragment 1] Student 8: I think the corners in polar coordinates