板书是否简练、准确、直观，不仅是一堂好课的标准之一，而且直接影响着学生对本课时知识的理解与掌握。对思想性和理论性较强的政治课则更为重要。如果在合适的内容中恰当地选用“—→”，则可以实现这一目的。下面，就笔者的实践谈一谈“—→”经常表示的几项内容：1．表示因 The conciseness, accuracy, and intuition of board writing are not only one of the criteria for a good lesson, but also directly affect the students’ understanding and mastery of the lesson knowledge. Political lessons that are more ideological and theoretical are more important. This can be achieved if “-→” is properly selected in the appropriate content. In the following, I will talk about the “-→” often expressed several items on the author’s practice: 1. Representation