在自学中教材涉及到了概率的内容,由于这部分基本概念多,有的概念意义相近容易混淆,而且解题结果不容易检验,所以感到学习困难,易犯错误。在解题中如何减少错误,提高正确率,通过自己的总结归纳,认为有些问题需要着重注意:一、正确理解基本概念1、正确区分“等可能”与“非等可 Teaching materials in self-learning involves the contents of the probability, because of the basic concepts of this part, some similar concepts easily confused, and the results of the test is not easy to test, so I feel learning difficulties, easy to make mistakes. How to reduce mistakes in the problem-solving, improve the correct rate, through their own summary, that some issues need to focus on: First, the correct understanding of the basic concepts 1, the correct distinction between “such as possible” and "unequal