In a room of 30 kids, what are the odds two of them share a birthday?
Open the story together Take it step by step
Family time
A story to share together
Get comfortable. Make a guess together. See where the story takes you.
Everyone gets a guess. You don’t need to know the answer before you begin.
After the story: things to talk about
- Name the two different birthday questions before you make a prediction.
- Add one person to a small group: how many one-person spokes and all-pair links are new?
- Where else could many small chances combine into a surprising collision?
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