For students to understandandexdperiment with event probability and game rules, also, for students to distinguish between fair and unfair rules and design a game with fair rules.

• 使学生进一步体会事件发生的可能性,进一步体验等可能性和游戏规则的公平性,能辨别游戏规则是否公平,初步学会设计简单游戏的公平规则。