For Teachers (Library of Congress)
Library of Congress resources for Teachers - includes lesson plans, information about teaching with primary sources and other ways to use the Library of Congress in the classroom.
Primary Sources
The History Place
History.com — History Made Every Day — American & World History
Resources for the Classroom (Education at the Getty)
NASA's Space Place :: Home :: NASA's The Space Place
Google in education
TeacherTube - Teach the World | Teacher Videos | Lesson Plan Videos | Student Video Lessons | Online Teacher Made Videos | TeacherTube.com