Openstax.org Textbooks

OpenStax.org is a nonprofit that provides free, high-quality, peer-reviewed textbooks for college and high school courses. These resources are openly licensed, allowing educators to adapt and customize the content to suit their course needs. Their textbooks cover various subjects, including mathematics, sciences, social sciences, and humanities. Ultimately, OpenStax org aims to improve access to education by reducing the financial burden of costly textbooks.