Math Geek Mom: Changes from Tragedy

By Rosemarie Emanuele. A “perpetual calendar” that indicates the day of the week a date falls on for any possible year is a topic that is taught in “Number Theory.” However,  I have memories of a similar issue arising in a Government class I took in college. There, on November 22nd, the teacher asked us all to write down what event happened on that day that most people remember. Read more...