“…OER constitute a category of learning resources, mainly in digital form but also in print, that are freely, openly and legally offered to teachers, students and pupils for use, reuse or adaptation for the purpose of learning, teaching and research (Allman et al, 2023;Bello & Mohammed, 2023;Butcher, 2011;Kanwar & Uvalic´-Trumbic, 2011;Lionarakis et al, 2020;Misra, 2013;Papadimitriou, 2022;Smith & Lee, 2016;Tang, 2020;UNESCO, 2002UNESCO, , 2012William & Flora Hewlett Foundation, 2019). More specifically, OER can, among others, be related to the following categories: e-learning platforms, e-books, open textbooks, whole courses or modules, teaching scenarios, Open Access journal articles, lectures, videos, lesson plans, images, interactive games, quizzes, guides, learning tools, software tools, virtual labs, podcasts, graphical visual representations of information (infographics), virtual and augmented reality applications, mobile technologies, etc.…”