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Open Educational Resources (OER) refers to teaching, learning, and research materials in any medium that reside in the public domain or have been released under an open license permitting their free use and repurposing by others. OER encompasses a wide range of resources such as textbooks, videos, simulations, and virtual labs. These resources are designed to be accessible, adaptable, and shareable, making them particularly valuable in the fields of education, instructional technology, augmented reality, and beyond. By leveraging OER, educators can provide students with high-quality, up-to-date materials that reflect current best practices and research findings, while also fostering collaboration, creativity, and innovation in the learning process.