读罢文[1]、文[2],收获很大,特别是文[1]深邃的概率概念体系的分析,文[2]精妙的引入情境:“在边长为2的正方形中随机撒一粒豆子,求这粒豆子撒在正方形内切圆中的概率”,都给我深刻的启迪.由此联想到自己讲授几何概型所经历的窘迫与喜悦,心绪难平,遂整理成文,与同行交流.1情境引 Reading [1], [2], a great gain, especially the text [1] deep probabilistic conceptual system analysis, the text [2] exquisite introduction of the situation: “in the side length of 2 randomly scattered in the square A bean, the probability of scattering the beans sprinkled in the inscribed circle of the square ”, give me a profound inspiration.Therefore, think of their own geometry type of teaching experienced embarrassment and joy, the mood is difficult, and then organize the written, Communicate with peers .1 situational lead