Online materials refer to various resources available on the internet that can be used for learning, research, or entertainment. These materials include articles, videos, e-books, and interactive content, which can be accessed through websites, educational platforms, or social media. They are often created by individuals, organizations, or institutions to share knowledge and information. These resources are beneficial for students, educators, and anyone seeking to expand their understanding of a subject. Online materials can cover a wide range of topics, from science and history to art and technology, making it easier for users to find information that suits their interests and needs.