在地球运动教学中,广大教师都在使用太阳直射点回归运动示意图(图1),但是大家对这幅图的使用还仅仅局限于太阳直射点的回归运动,没有充分挖掘这幅图的教学妙用。一、确定太阳直射点所在半球及移动方向如图2所示,在图中明确二分二至日后,给定任何日期或是时段,都可以清楚地看到太阳直射点所在的半球和移动方向。如3月12日,在图中位置如点A所示,太阳直射点位于南半球并正在向北移动。再如“五· In the teaching of earth movement, most teachers are using the sun’s direct point of return to the movement diagram (Figure 1), but we use this picture is only limited to the direct sun’s return movement, did not fully tap the magical effect of this figure . First, determine the direct sun and the hemisphere where the sun is located as shown in Figure 2, clearly in the figure two to two days later, given any date or period, you can clearly see where the sun is located at the direct point of the hemisphere and the direction of movement. As on March 12, the location in the diagram is shown as point A, the direct sun is in the southern hemisphere and moving north. Another example is ”five