Happy Pi Day! If you are a math nerd (like me), this is a fun day! People young and old, all around the world, challenge themselves to memorize ∏ on this day March 14 or 3.14 3.141592653589793238462643383279502884… Pi, the ratio of the circle’s circumference to its diameter, is an irrational number which never repeats, so … Continue reading "Teacher Appreciation & Pi Day"