Containing costs for students in higher education is a significant priority for the Colorado Department of Higher Education and the state of Colorado. Open educational resources (OER) are educational materials licensed to be freely shared and available at no cost to students. The Department champions OER as a strategic means of meeting the demand for affordable, high-quality learning and teaching materials. The 2024 Open Educational Resources Report -- Transforming Educational Practices through Open Educational Resources -- is submitted pursuant to CRS 23-1-134. The Colorado OER Grant Program has completed its fifth year. Grantees have converted 1,973 courses to OER, and more than 140,000 Colorado students are enrolled in courses utilizing open educational resources annually. In five years, OER has saved students more than $42.1 million, representing an astonishing ninefold return on the state's investment. Zero textbook cost "z-degrees" that provide students with pathways to complete their degree with no textbook cost are also growing. Colorado State University Pueblo has successfully implemented z-degrees in bachelor of arts in Spanish and master of arts in social work, Colorado School of Mines launched a master of science in mechanical engineering, University of Colorado Denver is nearing completion of a z-degree bachelor of science in mathematics, and multiple community colleges offer associate z-degrees. The sixth cycle of OER grants features 10 new z-degrees ranging from theater at Red Rocks Community College to a collaborative nursing z-degree between Fort Lewis College and University of Colorado Anschutz. Colorado has cemented itself as a leader in open education with the grant program, z-degree development, and the dedication of educators across the state who pursue OER to improve equity and pedagogy in their classrooms. Open Education and OER remain a strategic priority for affordability, innovation, and equity in higher education in Colorado.