摘要
通过测试 ,分析了学生理解充要条件困难的原因 ,并提出一些教学建议。
The author has analysed causes of difficulties students find in understanding ample and necessary conditions through tests and put forward some teaching suggestions.
出处
《保山师专学报》
2002年第5期32-34,共3页
Journal of Baoshan Teachers' College
关键词
充分条件
必要条件
充要条件
教学
ample condition
necessary condition
ample necessary conditions
