Worksheets and Projects in Principles of Macroeconomics
Sixteen PDF modules originally created by the Tufts University Global Development and Environment Institute (GDAE) and now hosted by the Economics In Context Initiative at Boston University. "The modules range from 25-60 pages, and most include discussion questions, glossary, references, and exercises." Some content is adapted from the "Economics in Context" series of textbooks.
This is an open online course, including text, interactive graphs, assignments and discussion topics, video clips, and interactive questions, based on the OpenStax Principles of Economics textbook and refined after testing in some US universities and community colleges in 2017. It uses media from around the web, including some economics educators' YouTube channels. There are dedicated pages for lecturer Powerpoints and for problem sets.