用分数表示概率

用单位分数描述简单的等可能结果的概率：掷一枚公平骰子掷出6的概率是1/6，抛一枚公平硬币正面朝上的概率是1/2，从三种颜色数量相等的物品中选出某一种特定颜色的概率是1/3；把这些分数概率放在0到1的概率标尺上。

Describe the probability of simple equally-likely outcomes using unit fractions: the probability of rolling a 6 on a fair die is 1/6, flipping heads is 1/2, picking one specific colour from three equally represented colours is 1/3; place these fractional probabilities on a 0-to-1 probability scale

学习证据 / Evidence

• 说出掷一枚公平骰子掷出6的概率是1/6，并解释原因。
• 将从一副标准扑克牌中抽到红色牌的概率表示为26/52或1/2。
• 把一个简单事件的概率写成分数：有利结果数除以总结果数。

• State that the probability of rolling a 6 on a fair die is 1/6 and explain why
• Express the probability of picking a red card from a standard deck as 26/52 or 1/2
• Write the probability of a simple event as a fraction: favourable outcomes over total outcomes

评估问题 / Assessment

如果{{name}}抛一枚公平硬币，他们知道正面朝上的概率是1/2吗？他们能否把类似的简单概率用分数表示出来，并放到0到1的标尺上？

If {{name}} flips a fair coin, do they know the probability of getting heads is 1/2 — and can they express similar simple probabilities as fractions and place them on a 0-to-1 scale?