University of Abuja

Centre For Distance Learning and Continuing Education

OER by subject

These are Google Docs made by Portland Community College librarians in response to requests for help from instructors.

On this pages you will find openly licensed textbooks along with supplemental material, interactive simulations, and other resources.

A collection of resources divided into humanities, social science, and STEM categories.

On this page, you will find the largest, most popular repositories of open educational resources separated by subject.

WeBWorK is an open-source online homework system for math and science courses. WeBWorK is supported by the MAA and the NSF and comes with a National Problem Library (NPL) of over 20,000 homework problems. Problems in the NPL target most lower division undergraduate math courses and some advanced courses. Supported courses include college algebra, discrete mathematics, probability and statistics, single and multivariable calculus, differential equations, linear algebra and complex analysis.

Complete Courses

Find lectures and videos from some of the most respected instructors in the world.

Materials, mostly study skills, to support students transitioning to college.

Large library of MOOCs, some of which have material freely licensed for re-use.

Library of college-level courses from a variety of high-profile universities. Some course materials are freely licensed for reuse.

All of the learning materials presented on this site are CC licensed, but don’t confuse “Learning Spaces” with the full Open University- their licensing/copyrights are different.

Open education course materials aimed at a high school level.

Miríadax is an Ibero-American MOOC platform with complete courses in Spanish for a variety of topics.

The WA Open Course Library project offers 81 of Washington’s most enrolled courses. There are a lot of great readings in these course files. Great community college content

An independent search engine that indexes open education classes from places like MIT, Yale and UMass. Adds extension to your browser.

Saylor offers full courses online. It can be really helpful to use the reading lists from Saylor to find and organize your courses.

Complete courses from Carnegie Mellon University

A series of modules in the field of Psychology from Introductory courses to more advanced topics.

OERu offers a number of full courses in fields like business, economics, digital literacy, and history from partner universities around the world.


Inspiring thinkers on a range of subjects present big ideas and lectures on a regular basis- completely CC licensed.

Hundreds of short educational videos covering many subjects; especially strong collections in science and math.

These interactive tools from the University of Colorado at Boulder are mostly CC licensed.

The thinkers behind Wikipedia bring you images, video and music all openly licensed or in the public domain.

HippoCampus, a project of the Monterey Institute of Technology and Education (MITE), is full of high-quality resources in a variety of subjects. It is aimed at high school and college level users.

Songs by musicians who want to share their music.

A social network of video producers. This is a great place to look for a wide variety of content- some is completely open for redistribution, some is open access.

A community of people who seek to promote the use of media in teaching. The materials posted here are mostly presented using Fair Use guidelines.

Images and Artwork

Creative Commons has created this really useful search engine that lets you search for resources that are CC licensed. The image search is the most useful.

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.

You can download, share, and reuse millions of the Smithsonian’s images. With new platforms and tools, you have easier access to nearly 3 million 2D and 3D digital items from the Smithsonian collections

Over 1 million photos that can be freely downloaded and used for either commercial and non-commercial purposes, no permission needed (though attribution is appreciated!).