排列组合的教学与数学思想的渗透

The teaching of permutation and combination and the infiltration of mathematical thinking

排列组合问题和日常生活联系紧密且趣味性强,但在排列组合应用题的学习过程中学生普遍存在"力不从心"、"会而不对"的现象,解题常出差错。因此,在解排列组合应用题时应加强排列组合的教学与数学思想的渗透。

Permutation and combination is connected so closely with daily life as well as interesting,that it is very popular in students.However,it＇s a familiar phenomenon that so many students feel＇ability not equal to their ambition＇or ‘kown but do it wrong’ when they study it and usually make mistakes.As a result , as far as I＇am concerned, it＇s highly commanded that we should focus more on penetrating the teaching of permutation and combination into mathematical thinking.