"Open textbooks are full, real textbooks, used by many faculty across the country, and licensed to be freely used, edited, and distributed." (Miami University OER) They can be found in a wide range of online sources.
Some of these sites share their content on OER Commons so you may encounter duplicate resources.
George Mason University has developed a "Metafinder" that simultaneously searches common open repositories, including the Library of Congress, Merlot, Project Gutenberg, the OER Commons, & more! Go to their Metafinder, or use the search form below.
Provide your students an alternative to expensive textbooks by following these steps:
Source: Adopted with adaptations from Open Education Resources By Regina Gong; Licensed under CC BY 4.0
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More info on open textbooks: