地球仪白昼罩是一种无光源就能在地球仪上模拟白昼的自制教具。它可以演示地球上任一地点在不同节气中太阳升落时刻、昼夜长短时间及一天中不同时刻的太阳高度。该教具只有一个部件,简单实用,适合中小学生作为学具使用。设计目的关于昼夜和四季的形成,学生普遍觉得不易掌握,而 Earth globe cover is a kind of self-made teaching aid that can simulate white flies on the globe without light source. It can demonstrate the height of the sun at any point on the earth in different solar terms, such as the rising time of the sun, the length of day and night, and at different times of the day. The teaching aid has only one component and is simple and practical. It is suitable for elementary and middle school students to use as learning tools. The purpose of the design is to learn about the formation of day and night and the four seasons. Students generally find it difficult to master.