Five index cards with series of numbers printed on them, as used in Birthday Numbers team puzzle

Birthday Numbers

Unique mathematical puzzle to challenge small teams.

  • Promotes lateral-thinking
  • Inspires creativity
  • Simple, but not easy
  • Powerful metaphor
  • Great time-filler


Step-by-Step Instructions

Video Tutorial

How To Play Narrative

Practical Leadership Tips

Social-Emotional Learning

Health & Wellness Programming

Popular Variations

Virtual Adaptation

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Useful Framing Ideas

Reflection Tips & Strategies


Contributor Mark

Add your Comments...

Have you played this activity? What worked, what didn't work? What type of group? Do you have useful advice for other users? Do you know a fun variation?

Comments (3)

  1. jeWElle de Mesa

    ooooops! i wonnnnnder, what are the odds that it will be magically recalled at some point. in some way, shape or form. 😉

    • Mark

      If you are referring to the alternative, mathematical solution which explains why certain numbers appear on certain cards, I have no clue JeWeL. It was once explained to me, and I forgot it three seconds later 🙂

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