Learn about the free Desmos online graphing calculator and activities and how they can be used for both teacher modeling and student problem solving. Use movable points, dynamic sliders, quick regression, geometry constructions, and more to help your students make sense of mathematics. Participants will also experience a Desmos activity through a student lens and learn how to use the teacher dashboard and classroom conversation toolkit to facilitate individual and collaborative student thinking. Learn how to implement dynamic lessons and use pre-built activities from Desmos itself and its user community. Bring a tablet or laptop to maximize your participation.