【摘要】 级联信道是“信息论基础”中的重要概念之一，其性质“数据处理定理”极为重要，但相关概念较抽象，传统教学方法的实际效果有待提高。以易懂的“外国人中文传话”游戏切入，将抽象概念具体化，由此引入级联信道定义及性质，在理论推导数据处理定理的基础上，结合该定理的实际应用让学生理解“信息不增”与数据处理的内在关系。此外在教学中植入文化自信、理论与实践结合等思政元素。更多还原

【Abstract】 Cascaded channel is an important conception of the course of Fundamentals of Information Theory, and its property “Data Processing Theorem” is very important. Because of the abstraction, the actual effect of traditional teaching methods needs to be improved. This case starts with the straightforward “Foreigner′s Whispers in Chinese” game, which concretizes the abstract conceptions. Then the concept of cascaded information channel and the property are introduced. Following the theoretical derivation of the data processing theorem, the practical application of the theorem is used to help students to understand the internal relationship between “the decreasing information during processing” and the necessity of the actual data processing systems. In addition, cultural confidence, the combination of theory and practice and other ideological and political elements are implanted during teaching.更多还原