This site gives access to "2,000+ lesson plans, 3,000+ links to online education information, and 200+ question archive responses. ... [It also] provides a search interface to the ERIC [Educational Resources Information Center] Database,
providing access to over one million bibliographic records on educational research, theory, and practice." The database is updated monthly and includes citations from 1966 to the present. Searchable. From the Information Institute of Syracuse (IIS).