Free experience · X005

Shared Birthday

How many people does it take before two of them probably share a birthday? Commit to an answer, follow the reveals, and discover what is growing much faster than the group itself.

Print and play

The complete experience, free

Print the leader notes once, and one group deck and answer sheet for each group. Or show the screen version to a whole room.

1 · Leader notesPrint once · 1 page, single-sided
2 · Group deckOne per group · 4 sheets, double-sided
3 · Answer sheetOne per group · 1 page, single-sided
Screen versionOne card per page, for a projector

Free · PDF downloads

The Shared Birthday cover card — The cover

Card 1: commit to a guess before the reveal — Card 1: commit first

Card 7: would the answer still be 23 for wedding anniversaries? — Card 7: flip the idea

How to print

Ten minutes of prep.

Print the leader notes once, single-sided, and cut out the cards.
For each group, print the group deck double-sided on card stock (flip on the long edge) and the answer sheet single-sided. Type the number of groups into your printer's Copies box.
Cut on the marks and keep each deck in order: cover first, then Cards 1 to 14.
Don't explain the idea first. The discovery is the point.

Want the idea behind it? See the exhibit H005.

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