Open educational resources vaulted to relevance in a UNESCO debate in 2002, where a committee met to promote their use in educational institutions worldwide. The advantages of OER are innumerable, starting with the visibility it gives to teachers who share their teaching work; they do not need a diploma or specialization to publish them. They can be informal contributions related to home cooking, carpentry, or even scientific studies. Professor Canchola describes OER as "the spirit of sharing" because they are created with a genuine intention to help other people. Some of the most famous OER that anyone can find on the internet are Frida Kahlo's voice and Stephen Hawking's thesis. The modern era of digitalization helps make these historical treasures accessible.
https://observatory.tec.mx/edu-news/we-answer-your-questions-about-oer