等可能结果

理解“等可能”意味着每个结果发生的概率完全相同；能判断给定情境是等可能结果（如公平硬币、公平骰子、等分转盘），还是不等可能结果（如某种颜色更多的袋子、不等分转盘）。

Understand that 'equally likely' means every outcome has exactly the same chance of occurring; identify whether a given situation has equally likely outcomes (a fair coin, a fair die, a spinner with equal sections) or unequally likely outcomes (a bag with more of one colour, a spinner with unequal sections)

学习证据 / Evidence

• 说明公平硬币的结果是等可能的，因为正面和反面出现的机会相同。
• 判断一个不等分转盘的结果是否等可能，并解释原因。
• 举出一个等可能结果和一个不等可能结果的例子，并解释两者的区别。

• Explain that a fair coin has equally likely outcomes because heads and tails each have the same chance
• Identify whether a spinner with unequal sections has equally likely outcomes or not, and explain why
• Give an example of a situation with equally likely outcomes and one without, explaining the difference

评估问题 / Assessment

{{name}}能分辨公平和不公平的情况吗？比如掷普通骰子时每个数字机会相同，而袋子里某种颜色远多于另一种颜色时机会不同。

Can {{name}} tell the difference between a fair situation — like rolling a normal die where every number has the same chance — and an unfair one, like a bag with many more of one colour than another?