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地理上册《地球仪》一课的教学有两个难点:一是地理概念太多(全课共九个),学生要在一节课中学懂记住,很不容易;一是概念太抽象,学生不好理解。比如:地球上有没有象地球仪上面小棍一样的轴?如果没有的话,地轴到底是什么样儿?解释经、纬线时,为什么说“在地球仪上……”而不说“在地球上……”?地球上有没有经、纬线?在地图上确定方向的方法和在地球仪上确定方向的方法有什么不同?怎么一致起来?南、北极没有纬线,怎么确定方向?这些疑问,根据学生现有的知识水平,很不容易讲清楚。
There are two difficulties in the teaching of the Geography Book “Globe”: First, there are too many geographical concepts (a total of nine in a whole class); it is not easy for students to learn to remember in a lesson. First, the concept is too abstract. Not easy to understand. For example, is there any axis on the earth like a stick on a globe? If not, what exactly is the axis of the earth? Explain why we say “on the globe ...” when explaining the latitude and longitude lines, not to say "on Earth ... What is the difference between the method of determining the direction on the map and the method of determining the direction on the globe? How to be consistent? There is no latitude in the south and the Arctic, how to determine the direction? These questions, based on the existing The level of knowledge, it is not easy to make it clear.