# Pi Approximation Day 2021

Happy Pi Approximation Day! Pi is a famous irrational number! π = 3.1415926535… The real Pi Day is on March 14th, so what’s with today? Since Pi is an irrational number, that means it goes on forever, and ever… Such a long number is a little unwieldy to use in calculations. Now we have a… Continue reading Pi Approximation Day 2021

# Happy Pi Day

March 14th is the birthday of Albert Einstein, born in Ulm, Germany, 1879. It is also Pi Day! Pi is calculated as the circumference of a circle, divided by its diameter – which is always the same, irrational number! The first three digits of pi coincide with the U.S. mm-dd-yy date format of 3/14, giving… Continue reading Happy Pi Day

# Tau Day 2020

Happy Tau Day!! It’s time for another math holiday! June 28th is Tau Day. That’s because the number tau begins with 6.28, just like the date 6/28. Tau is an irrational number, meaning the decimal places continue forever! Here are the first several: Notice anything interesting about the number? This number is twice pi! Apparently,… Continue reading Tau Day 2020

# Pi Day 2020

March 14th is Pi Day! Today is also the birthday of Albert Einstein (1879-1955). Pi is the irrational number π = 3.1415926535… The first three digits of pi coincide with the U.S. mm-dd-yy date format of 3/14 for Pi Day. Pi is calculated as the circumference of a circle, divided by its diameter.  … Continue reading Pi Day 2020

# Pi Day 2019

March 14th is the birthday of Albert Einstein, but it’s also Pi Day! Pi is the irrational number π = 3.1415926535… The first three digits of pi coincide with the U.S. mm-dd-yy date format of 3/14 for Pi Day. Pi is the circumference of a circle, divided by its diameter. What else is usually a… Continue reading Pi Day 2019