b'23In 2018, three MA teachers presented a session titled Teaching Social Justice Via Math (and Vice Versa) at the annual meeting of the National Council of Teachers of Mathematics in Washington, D.C. With the teaching fellowship program ending and the master teacher program expanding, Bill Day, a former MA DC master teacher and 2014 D.C. Teacher of the Year, will be joining MA DC director BiancaMaster teachers Chris Hoyt (left) and Will Stafford (right) are Abrams to help coordinate the growing program. Thenow National Board Certified Teachers (NBCT). It is the most respected professional certification available in K-12 education. goal is to enroll up to ten master teachers annually. Images courtesy Chris Hoyt and Will Stafford Mathematizing an Exhibition At the start of each school year, all MA DC teachers kick off their professional development with a mathematizing event. Mathematizing is the process of understanding, describing, or exploring anything using a mathematical lens. This past year they mathematized at the National Building Museum, including at the exhibition Making Room: Housing for a Changing America. This exhibition features a 1,000-square-foot home designed to meet the needs of a millennial household. It has movable walls, a super-efficient layout, and furniture with different functions so that the small space meets the needs of diverse occupants with different needs. To mathematize the exhibit, the teachers explored the geometry and other features of the space and expressed them mathematically (e.g., does a fold-upAfter touring the Fun House at the National Building Museum, apartment really maximize floor space, how manyshown from the outside (top and bottom left), the teachers cubic centimeters of chocolate pudding can fitbroke into groups to interpret the different features of the house mathematically (bottom right). inside the four-sided room, etc.). Images courtesy Bianca Abrams, MfA DC'