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