Enotes: eNotes features high-quality study guides, lesson plans, and other reference material in various academic areas.
Dictionaries, Encyclopedias, Libraries, Search Engines, Thesauruses
AskERIC: Educational information with a personal touch
NASA Spacelink (Aeronautics Resource for Educators)
Lesson Plans - Teacher Resources from Microsoft
Education Planet: Web Resources for Students & Teachers
Education World: "Where educators go to learn"
Enchanted Learning: 16,000 + pages of learning.
Books / Textbooks
Plato Educational Software
Global School Net: Global SchoolNet Foundation (GSN) partners with schools, communities and businesses to provide collaborative educational, scientific and cultural learning activities that prepare students for the workforce and help them to become literate and responsible global citizens.
PIViT: Project Integration and Visualization tool.