This February 15 warm-up activity explores "mathematics" used by characters on The Simpsons. Skill addressed are area of a circle, measuring with a protractor, angle measures in a triangle, and an informal analysis of the Pythagorean Theorem. Students solve clues to find the Mystery Year of the birthday of Matt Groening, the creator of The Simpsons. Your Zip download includes printable/digital PDFs:1-page printable Student Puzzle, also prepped for Easel1-page Answer Key with sample solutions1-pa