This material is based on original writing by David Wiley, which was published freely under a Creative Commons Attribution 4.0 license at http://opencontent.org/definition/.
Both OA and OER are inspired by the open movement. They both aim to remove knowledge from behind paywalls, but they differ in their purpose. OA focuses more on research whereas OER focuses more on teaching and learning. This following document compares and contrasts OA and OER: