http://www.mathaware.org/index.html

Mathematics Awareness Month is held each year in April. Its goal is to increase public understanding of and appreciation for mathematics. Activities for Mathematics Awareness Month are generally organized by college and university departments, institutional public information offices, student groups, and related associations and interest groups. They have included a wide variety of workshops, competitions, exhibits, festivals, lectures, and symposia. Some years elected officials have issued proclamations for Mathematics Awareness Month, frequently in connection with special meetings and events arranged to observe the month.