Mathematics educator Dan Meyer, who holds a Ph.D. in Math Education from Stanford University and a B.S. in Mathematics from the University of California, Davis, blogs about teaching math on dy/dan. Meyer has authored this blog since 2006, sharing teaching ideas along with reflections about mathematics curriculum and pedagogy. Mathematics instructors of all levels may want to periodically check out dy/dan for insights and humor about the challenges and joys of teaching this subject. Those new to the site may want to start with the Archives, where visitors may search through past posts via a variety of subject tags, including Classroom Management, Assessment, and Great Classroom Action (which features a number of creative and engaging classroom activities). A highlight of this blog is Three-Act Tasks, a series of lesson plans centered on student problem solving. These engaging lessons are accompanied by videos that are sure to pique student interest.