"North Sea Bloom" by European Space Agency is licensed under (CC BY-SA 2.0)
This is a collection of openly licensed or free textbooks and materials that can be used to enhance teaching and learning. This page highlights some of the Open Educational Resources (OER) available, but this is by no means an exhaustive list. If you would like to learn more about OER please visit the Open Educational Resources and Textbook Affordability Library Guide.