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The National Science Digital Library encourages citizens to help enlarge and strengthen their library of high quality resources and tools that support science, technology, engineering, and mathematics education. Developers of content in these subject areas, National Science Foundation grantees, educators and learners, and all other members of the community are welcome to recommend digital resources for the library. These resources include activities, lesson plans, Web sites, simulations, or any materials that help educators meet the demands of an increasingly complex technology-based world. As a national network of learning environments, resources, and partnerships, the National Science Digital Library seeks to serve a vital role in educational cyberlearning for the nation, meeting the informational and technological needs of educators and learners at all levels.