Pi Day

piday English 2018 March 14 Etymology thumb|A pi pie baked at the Delft University of Technology in Delft, Netherlands en pi + en day, from the date March 14th in the month/day format (that is, 3/14), 3, 1 and 4 being the first three significant digits of the mathematical constant π. Pronunciation en /ˈpaɪ deɪ/ RP,GA en en-au-Pi Day.ogg AU Proper noun Pi Day March 14th, an annual celebration of the mathematical constant π (pi). en Louise Bock; Susan Guengerich; Hope Martin March Celebrations Multicultural Math Fun: Holidays around the Year Portland, Me. J. Weston Walch Publisher 1997 83 https://books.google.com/books?id=EIeZW4HFnMYC&pg=PA83 978-0-8251-2905-6 Did you know that March 14 is Pi Day (no, π is not misspelled). Pi Day is celebrated on 3/14 or 3.14! To commemorate this remarkable ratio, we have a few circular activities. The first is the Pizza Survey. What are the students' favorite toppings on pizza? What do you like best? en David H. Albert Exits and Entrances And the Skylark Sings with Me: Adventures in Homeschooling and Community-based Education Gabriola Island, B.C. New Society Publishers in cooperation with Holt Associates/Growing Without Schooling 1999 128 https://books.google.com/books?id=W_I6BAAAQBAJ&pg=PA128 978-0-86571-401-4 As Quakers, we do not as a matter of religion celebrate any holidays (more accurately, all days are to be considered holidays because they have equal potential for revealing the Divine to us), but as a cultural matter we celebrate all kinds: Hindu, Christian, Jewish, ethnic, birthdays of famous composers, artists, writers, and scientists, π Day (March 14th – we bake several pies and divide them into fractions before eating), even some we just make up ourselves. en w:Ivan Peterson A Passion for Pi Mathematical Treks: From Surreal Numbers to Magic Circles Spectrum Series; a Science News Book [Washington, D.C.] w:Mathematical Association of America 2002 17 https://books.google.com/books?id=4gWSAraVhtAC&pg=PA17 978-0-88385-537-9 Of all known mathematical constants, however, pi continues to attract the most attention. The Exploratorium in San Francisco continues to celebrate Pi Day on March 14 each year, starting at 1:59 pm. en H. Res. 224 Supporting the Designation of Pi Day, and for Other Purposes https://www.gpo.gov/fdsys/pkg/BILLS-111hres224eh/pdf/BILLS-111hres224eh.pdf https://web.archive.org/web/20161228084444/https://www.gpo.gov/fdsys/pkg/BILLS-111hres224eh/pdf/BILLS-111hres224eh.pdf 28 December 2016 [Washington, D.C.] w:United States Government Publishing Office 12 March 2009 2 https://www.gpo.gov/fdsys/pkg/BILLS-111hres224eh/pdf/BILLS-111hres224eh.pdf#page=2 Whereas Pi can be approximated as 3.14, and thus March 14, 2009, is an appropriate day for "National Pi Day": Now, therefore, be it / Resolved, That the [United States] House of Representatives— / (1) supports the designation of a "Pi Day" and its celebration around the world; en Jonathan M[ichael] Borwein The Life of Pi: From Archimedes to Eniac and Beyond David H[arold] Bailey; Jonathan M. Borwein Pi: The Next Generation: A Sourcebook on the Recent History of Pi and Its Computation Switzerland w:Springer Nature 19 June 2012 2016 446 https://books.google.com/books?id=K26zDAAAQBAJ&pg=PA446 10.1007/978-3-319-32377-0 978-3-319-32375-6 Likewise, March 14 in North America has been π Day, since in the USA the month is written before the day ('314'). In schools throughout North America, it has become a reason for mathematical projects, especially focussing on π. en Sam Ro March 14, 2015 will be a once-in-a-century thrill for math geeks http://www.businessinsider.com/pi-day-2015-2014-3/ https://web.archive.org/web/20160304091736/http://www.businessinsider.com/pi-day-2015-2014-3 4 March 2016 w:Business Insider 14 March 2015 March 14, or 3/14, is recognized by math geeks as Pi day. That happens every year. But as UBS’s Art Cashin notes, next year’s Pi day will be a once-in-a-century Pi day. “At 9:26:53 a.m., they can write 3/14/15; 9:26:53, which you should also recall are the first ten digits of Pi in perfect order,” said Cashin. en Liz Strachan A Little More Pi https://books.google.com/books?id=pvGpCwAAQBAJ&pg=PT112 Easy as Pi: Maths Made Simple London Robinson 2016 978-1-4721-3728-9 Pi lovers like to celebrate Pi Day every year. In the US, they write the date with the month first, then the day and year. So in 2015, 14th March was 3 14 15, the first five digits of π. So that was a really special Pi Day when, of course, they sang their special song, Pi, Pi, Mathematical Pi, to the tune of that great song everyone danced to in the 1970s, 'Bye-bye, Miss American Pie' by Don McLean. Alternative forms en π Day Translations March 14th, an annual celebration of the mathematical constant π (pi) Arabic: ar يوم ط Armenian: hy Պի թվի օր Assamese: as পাই দিৱস Bengali: bn পাই দিবস Bulgarian: bg Денят Пи m Catalan: ca Dia Pi m Chinese: Cantonese: yue 圓周率日 jyun4 zau1 leot2 jat6 Mandarin: cmn 圓周率日 Yuánzhōulǜrì Chuvash: cv Пи хисепӗн кунӗ Czech: cs Den pí m Danish: da Pi-dag c Dutch: nl pi-dag m, nl pi-benaderingsdag m Esperanto: eo Pi-tago Estonian: et Pii päev Finnish: fi piin päivä French: fr journée de pi f Georgian: ka პის დღე German: de Pi-Tag m Hebrew: he יום פאי m Hungarian: hu nemzetközi π-nap Icelandic: is π dagur m, is Nálgunardagur π m Indonesian: id Hari Pi Italian: it Giorno del pi greco m Japanese: ja 円周率の日 えんしゅうりつのひ, enshūritsu no hi Korean: ko 파이의 날 Kurdish: Central Kurdish: ckb ڕۆژی پای Lithuanian: lt Pi diena f Macedonian: mk Ден на бројот пи m Malayalam: ml പൈ ദിനം Nepali: ne पाई दिवस Norwegian: Nynorsk: nn Pi-dagen m Odia: or ପାଇ ଦିବସ Persian: fa روز پی Polish: pl Dzień Liczby Pi m Portuguese: pt Dia do Pi m Romanian: ro Ziua pi Russian: ru День числа пи m Serbo-Croatian: sh Dan broja pi m Sinhalese: si පයි දිනය Slovak: sk Deň pí m Slovene: sl Dan pi m Spanish: es Día de Pi m Swahili: sw Siku ya Pi Swedish: sv Pi-dagen c Tamil: ta பை நாள் Thai: th วันพาย Turkish: tr Pi Günü Ukrainian: uk День пі m Vietnamese: vi Ngày số pi Further reading Anagrams en adipy ypaid en Geometry Pi Day en Observances