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《义务教育数学课程标准》对概率部分的要求主要体现在两方面:一是从事件本身发生的可能性来把握概率;二是通过大量重复试验用频率来估计概率。结合实际背景,考查概率知识的有关概念以及计算简单随机事件的概率等内容仍然是南京市近年数学中考的主要形式。这种考法上的变化,对教学具有正确的导向作用。在解决初中概率统计中等可能性的结果的有关问题时,当等可能性结果的总数量不多时,我们通常把要计数的所有对象一一
The standard of compulsory education mathematics curriculum for the probability part of the requirements are mainly reflected in two aspects: First, the possibility of events itself to grasp the probability; the second is through a large number of repeated tests to estimate the probability of frequency. Combining the actual background, examining the concept of probability knowledge and calculating the probability of simple random events and other content is still the main form of Nanjing senior high school entrance examination in recent years. This test method of change, the teaching has the correct direction. When addressing the issues related to the probabilities of probabilities in the junior high school, when the total number of possible outcomes is small, we usually include all the objects to be counted