Math Nerd & Pi Day Hats

Math teachers trade puns constantly ("Not all math puns are terrible, just sum"), and everyone sat through enough math class to get them. This collection is for the mathlete, the teacher, the engineer-at-heart and the person who still shows their work on a grocery list. The badges say it plainly: MATH NERD, MATH TEACHER and MATHLETE. The rest is the mathematician who takes every sentence literally. BE RATIONAL GET REAL plays the rational and real number sets against everyday advice, and it already sells on hats and tees. I'M A MATHEMATICIAN OF COURSE I HAVE PROBLEMS is the word-problem pun every math class groans at. I LIVE FREE OR PI HARD borrows a math-teacher favorite that bends an action-movie title around pi. I SHOW MY WORK EVEN WHEN NOBODY ASKS is the gold-star habit that never leaves you, and I KNOW PI TO 50 DIGITS AND NO PHONE NUMBERS is for anyone who memorized more of pi than of their contacts. 3.14159 needs no explanation on March 14. Pi Day started at the San Francisco Exploratorium in 1988, got a US House resolution in 2009, and in 2019 UNESCO named March 14 the International Day of Mathematics. It is also Einstein's birthday. That makes a built-in gifting moment every spring. Every hat is custom embroidered on an unstructured dad hat, and BE RATIONAL GET REAL comes in a second colorway.