We've put together this page on the Public Domain and how to find images and artwork that are in the Public Domain. Included are several resources for searching and finding images that are in the Public Domain.
Boundless works with experts to compile web-based openly available content into the same general arrangement of textbooks. You can actually search the ISBN for your current textbook and see what content Boundless would use to replace it.
Lyryx offers high-quality open textbooks in the fields of accounting, mathematics, and economics. They also have optional added (paid) resources such as homeworks and quizzes to accompany the open textbooks.
This repository contains learning materials, software, data, and models for teaching quantitative skills in undergraduate biology courses. QUBES is developed in part by faculty at the University of Pittsburgh.
Open resource for faculty and librarians about Research Assignments. A research assignment is anything that requires students to engage with information resources in a critical or reflective way. This most often includes finding, retrieving, analyzing and evaluating, using and integrating, or organizing the information in order to produce new knowledge.