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Open educational resources (OER) are freely available online teaching and learning materials that can be used and reused without cost. OER benefit individuals by improving access to quality resources, education systems by lowering costs through collaborative development and reuse of existing materials, and education providers by reducing costs and allowing more diverse curriculums. OER include full courses, textbooks, modules, lessons, tests, videos, and software that reside in the public domain or are released under open licenses permitting free use.









