在第十二册《自然》《月相的成因》一课中,有一幅月球在天空中的方位和月相图。在图中,月球随着日期的推移在天空中的方位是自西向东移动的,农历每月初二傍晚,月球在西方,十五傍晚,月球在东方,而且移动的轨迹是弧形的。虽然课本上画得很清楚,但很多学生包括部分老师遇到此类问题的时候仍然很茫然。 In Lesson 12, “Nature”, “The Cause of the Moonphase”, there is a lunar moon’s azimuth and lunar phase in the sky. In the picture, the moon moves from west to east in the sky with the passage of time. On the second day of the lunar month, the moon is in the west, the moon is in the east, the moon is in the east, and the trajectory of the moon is curved. Although the texts are clearly drawn, many students, including some teachers, are still at a loss when they encounter such problems.