Open Educational Resources Common (OER COMMON)

The site provides resources for curriculum alignment, quality evaluation, social bookmarking, tagging, rating, and reviewing as a network for teaching and learning materials.
To provide a single point of access to the most delicate quality information worldwide, OER Commons has formed relationships with over 500 key content partners. Users can search over 42,000 approved and fully indexed OER, ensuring that resources are relevant and easy to find. These resources are available for educational use because they are "open," and many of them have Creative Commons licenses that allow them to be repurposed, edited, and adapted for various local settings.