Open Educational Resources (OER) offer everyone a convenient and modern way of learning and teaching. They were created for users, their needs and requirements. Flexible use and the possibility of modification ensure the availability and currency of the content.
The world of Open Educational Resources offers everyone a wide range of topics and forms. The most common definition of OER is the one from the UNESCO Paris Declaration of 2012, according to which open educational resources are:
"Materials for teaching, learning and research, in any medium, whether digital or otherwise, in the public domain, or materials made available under an open licence, allowing free access, use, adaptation and redistribution of the material without any restrictions".
