Steven A. Greenlaw has been teaching principles of economics for more than 30 years. In 1999, he received the Grellet C. Simpson Award for Excellence in Undergraduate Teaching at the University of Mary Washington. He is the author of Doing Economics: A Guide to Doing and Understanding Economic Research, as well as a variety of articles on economics pedagogy and instructional technology, published in the Journal of Economic Education, the International Review of Economic Education, and other outlets. He wrote the module on Quantitative Writing for Starting Point: Teaching and Learning Economics, the web portal on best practices in teaching economics. He is the principal content expert for OpenStax’s Principles of Economics, for which he is currently writing the second edition. He has also been the subject matter expert on Waymaker: Principles of Micro and Macroeconomics, an adaptive learning platform for Lumen Learning’s part of the Gates Foundation Next Generation Courseware Challenge.