How can we actively engage hundreds of people in learning challenging STEM concepts and abstract models in a large lecture or concert hall? Come to this session to explore co-creating dynamic, interactive, insightful STEM representations that you may wish to try with your audience of any size. Carolyn Sealfon (Doctor, University of Toronto/Ronin Institute) has taught, or more, facilitated learning in the University of Toronto Department of Physics, at Princeton University as Associate Director of Science Education, at a Pennsylvania public university, at an inner-city high school in New Jersey, and in interactive workshops across the continent.