Merlot--This amazing database provides full text lessons and lesson plans on nearly every subject under the sun. It's supported by higher education. Full-text materials.
Explora Primary Explora Primary is EBSCO's interface designed for elementary students. Students can browse topics of interest or search for a topic of their choice. Search results can be limited to source type (e.g., magazines, news, biographies, etc.) or by Lexile range.
Explora Middle & High School And this is the MIddle/High School verison of Explora
Academic Search Complete Covers thousands of topics, but does not specialize.
APA PsycInfo Leading source for anything related to psychology. Even on how to brush your teeth...Major source for scholarly articles on the topic.
Education Research Complete Articles on education practice and educational research.
Education Week Think of this as the Wall Street Journal/New York Times for K-12 professionals
Educators Reference Complete Covers pre-K through College
ERIC@ EBSCOHost Excellent source for nearly every topic in education
MathSci Net Index and summaries of articles and books on mathematical research
Psychology and Behavioral Sciences Collection Another good resource