With pairing problems in classical probability as the example and through the forms of several solutions to one problem, the calculating formulas for basic events are presented.
文章以古典概型中“配对”问题的概率为例，采用一题多解的形式，给出了基本事件数的计算公式。
Some problems are discussed in classical probability teaching. Detail explanations are given in the concept introduction, problem-solving procedure and judgment of equal-possibility.
对古典概率的教学方法进行了探讨，指出了讲授时应该注意的几个问题。对概念的引入，解题步骤及等可能性的判断进行了详细的说明。
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