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本次课的内容取自全国中等卫生学校通用《数学》教材第三章“排列组合”第２节“排列与排列数”，用时１００分钟。本文将从以下４方面阐述教学思路及教学过程。１教材分析１．１本节教材的地位与作用本节是“排列组合”一章中的第２节“排列与排列数”，同时又是下一步学习组?
The contents of this course are taken from Section 2 “Arrangement and Arrangement” of Chapter 3 “Arrangement and Combination” of the National Mathematics Teaching Materials of the National Secondary School of Hygiene, taking 100 minutes. This article will explain the teaching ideas and teaching process from the following four aspects. 1 textbook analysis 1.1 the status and role of this section teaching materials This section is “arrangement combination” chapter 2 “arrangement and arrangement number”, but also the next learning group?