月相的判断是新课标高中地理选修教材第二章的难点之一,也是本章的重点内容。虽然经过月相成因图的详细分析、多媒体课件的反复展示,但在具体的问题情景中,学生仍然力不从心,不知如何下手来解决问题。借鉴多方成功经验,本文总结出“定向、运理、明相”的三步解题法,可较好地解决此类 The judgment of the moon phase is one of the difficulties in the second chapter of the textbook of geography elective textbooks in the New Curriculum and High School, which is also the focus of this chapter. Although after a detailed analysis of moon phase due to the diagram, multimedia courseware repeatedly demonstrated, but in specific problem scenarios, students still powerless, I do not know how to start to solve the problem. Drawing on the successful experience of many parties, this article summarizes the three-step solution to the problem of “orientation, operation and clarification”, which can be a good solution to such problems