The Coincidence Lab
The MostlyOdd kit of live experiments that show a room how often the impossible happens
Two strangers with the same birthday, a coin that lands heads six times running, someone you know winning a raffle: each feels like a sign, and each is roughly what the arithmetic predicts. The Coincidence Lab turns that into six live experiments for a class, a family or a party. Everyone predicts on paper, you run it, and the exact odds explain the result: shared birthdays (70.6% in a room of 30), someone sharing one given birthday (7.6%), phone endings, the invented coin sequence that gives itself away, a picked number, and the one-in-a-million event that is routine in a big city. Part 2 has a forty-minute lesson plan, a party round, and a way to write your own experiments. For teachers, parents and hosts; teachers may print the pages for their own students. With your purchase comes a personalised sheet with every experiment's odds for your group size.
Look inside
Two full pages from the workbook, exactly as printed. Click either to read it at full size before you decide.
What is in it
- Shared birthdays, and counting the pairs
- Someone shares MY birthday
- Phone endings and birth months
- The fake coin sequence
- Pick a number
- The one-in-a-million event
- A lesson plan, a party round, and writing your own
- Prediction sheet, coin tally sheet and odds table
- Bonuses: a quickstart, the answer card and a blank experiment
- A personalised sheet: every experiment for your group size
- ✓ 27 printable pages
- ✓ 10 sections, worksheets and templates
- ✓ A second PDF worked out from the numbers you enter
- ✓ No account needed, just an email address
- ✓ Instant download; link valid 7 days
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The lab complements the free Coincidence Probability Calculator. It gives the odds; the lab turns them into experiments a room can predict, run and check.