Understanding the difference between Open Access (OA) and Open Educational Resource (OER) | Literacy, Languages and Leadership

"As I was conducting some research for a project I am working on, I became puzzled by the differences between Open Access (OA) materials and Open Educational Resources (OER). I did some digging and here is what I discovered:

Open Educational Resources (OER) and Open Access (OA) are closely related. The basic difference between them is the purpose for which they were created."