ERIC contains over 800,000 references to thousands of educational topics. The sources it indexes include journal articles, books, theses, curriculum, conference papers, and standards and guidelines. See the list of ERIC numbers only available in microfiche, not online, at http://eric.ed.gov/pdf/ERIC_KeepList.pdf.
Thousands of self-paced videos and practice exercises for students covering K-12 math, science (biology, chemistry, and physics), finance, and history. Teachers can use the videos in the classroom and access data on students' progress.