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谈到解斜三角形,大家很敏感的一个问题就是增解,如何让学生有意识地、快速地判断出是否有增解,准确地得出答案,是教学的一个难点,为了突破这个难点,我们精心设计了一题多解、一题多变、师
Talking about Xie triangle, we are very sensitive to a problem is to enhance, how to make students consciously and quickly determine whether there is a solution, accurate answer is a difficult teaching, in order to break through this difficult, we carefully Design a multi-solution, a question changeable, division