Goodies

Goodies

Free things to print, pin up or stick on the fridge. The fridge was not consulted.

Free printables

Made in your browser, printed by your printer. Nothing about your number is sent anywhere.

• Certificate of discovery

  Free for now

  Department of Finding Things

  Certificate of discovery

  This is to certify that

  999999

  was found hiding in the digits of π.

  It first appears at decimal place 762.

  The digits around it

  …7713099605187072113499999983729780499510…

  Found before the kettle boiled. π barely had to try.

  Hidden in πhiddeninpi.com

  Awarded on 14 March, Pi Day

  Official-looking proof that you are in π, with the date and the digits around you. Frame it. Or don't.

  Make yours on Find

• π fingerprint print

  Free for now

  The digits around your spot as a barcode of chalk colours, big enough for a wall.

  Make yours on Find

• Classroom kit

  Free for now

  Sheet 1 of 4Name: ____________________ Class: __________

  Find your birthday in π

  Every birthday is hiding somewhere in the digits of π. Look yours up on Hidden in π (or use a friend's, or a favourite number: nothing private needed) and fill in the table.

  How I wrote it	Digits	First appears at decimal place
  Day and month (DDMM)
  Day, month and year (DDMMYY)
  Day, month and the whole year (DDMMYYYY)

  1. Which way of writing your birthday was found first? Which was found last?
  2. Round your deepest answer to the nearest thousand, million or billion: about how deep is it?
  3. Why does a birthday written with eight digits hide so much deeper than one written with four?

  Hidden in π classroom kit

  Four worksheets for Pi Day or any wet Tuesday: birthdays, a digit hunt, string and plates, and the answers.

  Open the classroom kit

Merch

π on a T-shirt, a mug or a sticker for the laptop. Printed to order by a print-on-demand shop, so nothing sits in a cupboard here.

• Your number is in π.

  The site's whole promise, worn on the chest. Footnote not included.

• Pie and digits

  A pie and the digits 3, 1, 4 peeking out from behind a π. Nobody famous was harmed.

• Class dismissed.

  For the last lesson on a Friday. Or every lesson, if you are brave.

• 999999: π stutters here

  Six nines in a row at decimal 762, the Feynman point. Even π needs a breather.

• I'm somewhere in π

  For anyone who has looked themselves up. A little ruler shows roughly where.

The merch stall is being set up. The chalk keeps snapping. Check back soon.