Happy Pi Day

Pi Day is an annual celebration of the mathematical constant pi π in the US. Pi Day is observed on March 14 (3/14) since 3, 1, and 4 are the first three significant digits of π. 

The earliest known official or large-scale celebration of Pi Day was organized by Larry Shaw in 1988 at the San Francisco Exploratorium. 

Pi Day can be celebrated in a number of ways, most commonly by eating pies, discussing its significance, holding math quizzes etc.

Some ideas and resources to celebrate Pi Day in English:

http://www.piday.org/

https://es.pinterest.com/amyla16/pi-day/ 

https://www.pinterest.com/profwilcox/pi-day-activities/

http://www.ck12.org/search/?q=Pi&source=ck12 

http://www.educationworld.com/a_lesson/lesson/lesson335.shtml