The document discusses the Creative Commons Attribution (CC BY) license requirement for materials created as part of the Next Generation Learning Challenges (NGLC) Wave 2 grant. It defines CC BY as requiring attribution and allowing reuse, revision, remixing, and redistribution of copyrighted work. The document provides an overview of Creative Commons as a nonprofit that offers free copyright licenses to mark work with specific permissions for reuse. It also defines Open Educational Resources (OER) and how using CC BY for NGLC-funded work supports open sharing and adaptation of resources.