Last year, we designed a logo for the Payton Math Circle, run by Chicago’s much-lauded public high school, Walter Payton College Prep. Following the success of that mark, we were asked to create another logo for Payton Prep’s mathematics educator Paul Karafiol, recipient of the Presidential Award for Excellence in Math and Science Teaching. This logo is for QED, Chicago’s Youth Mathematics Symposium

This logo is based on Henry Perigal’s proof of the Pythagorean Theorem, a graphic representation that almost makes sense to a number-phobe like me.