Each of the 33 OpenStax textbooks in the B.C. collection has an editable Pressbooks copy available on the textbook’s record page; under the heading “Get This Book”, choose “Editable: Pressbooks copy”.
Adapt/Change an Open Textbook
24 Where can I find editable copies of the OpenStax textbooks in the B.C. collection?
For more information on these editable copies, see Appendix C: OpenStax Textbooks in Pressbooks in the Pressbooks Guide.