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在高三地理复习课教学中,有时会遇到有关某地“年昼长最大差值”和“年正午太阳高度最大差值”问题的考查。多数学生感到此类问题艰涩难懂,找不到突破点。笔者根据多年的教学经验,对以上两个问题进行了探索和系统整理,与广大的地理教学界的同仁交流。一、“年昼长最大差值”的解析及应用我们知道,北半球各纬度,夏至日昼长达到一年
In the third year of high school geography teaching review, sometimes encountered on somewhere “the maximum difference between day and night ” and “the maximum difference between the height of the sun at noon ” examination. Most students feel difficult to understand such problems, can not find a breakthrough point. The author based on years of teaching experience, the above two issues were explored and systematically organized, and the majority of geography teaching colleagues exchange. First, the “maximum difference in the length of day” analysis and application of We know that the latitudes of the northern hemisphere, summer solstice day length up to a year