数学是中学课程里以逻辑思维见长的一门基础学科，其基础知识的巩固，基本技能的训练往往是通过典型例题完成的。它不同于语文、外语、政治、史地等需要背诵的课程，因而在课堂上作笔记，也具有自己的特点。一是用脑记。教师的每一堂课都要集中解决某一个或某一类重点问题，所 Mathematics is a basic discipline that is known for logical thinking in the middle school curriculum. The consolidation of basic knowledge and the training of basic skills are often accomplished through typical examples. It is different from language, foreign languages, politics, history, and other courses that need to be memorized. Therefore, taking notes in class has its own characteristics. One is to use the mind to remember. Each class of teachers must concentrate on solving one or a certain type of key issues.