I am grateful to have had the opportunity to participate in the CUNY OER scale-up initiative by customizing, substantially editing, and adding my own contribution in the full-length textbook. During this year I worked on creating original content and completing a textbook Principals of Macroeconomics 3e: A Revised, Online Textbook for Kingsborough Community College Students. This book is a revised OER Introduction to Macroeconomics textbook designed for Kingsborough Community College students enrolled in Macroeconomics ECO 1200. It is a derivative of the OpenStax Introduction to Macroeconomics 3e by David Shapiro, Daniel MacDonald and Steven Greenlaw and “Principals of Macroeconomics 3e: A Revised, Online Textbook for Bronx Community College Students” by…