ScienceDirect is the database of journals published by Elsevier, in engineering, medicine, science, and the social sciences, 1995 to present (many fulltext). Look for the green "full-text" icon when searching for articles.
MathSciNet is a database from the American Mathematical Society (AMS) that contains approximately 2.8 million reviews and abstracts from math publications (many of these have direct links to the article or item.) First published in print as Mathematical Reviews in 1940, MathSciNet also includes bibliographic data from digitized articles dating as far back as the 1800s.
ERIC (Educational Resources Information Center) is the world's most widely used index to educational-related literature. It contains a wide variety of journal articles, research reports, curriculum and teaching guides, conference papers, dissertations and theses, and books.
NOTE: Searching within Answers @ Bertrand Library will lead you to how-to's, tutorials, walk-throughs, and FAQs for a variety of research-related questions. Answers @ Bertrand Library should not be used to search for journal articles, books, and other materials. Please consult subject-specific databases for these searches or ask a librarian.