Khan Academy
Khan Academy: Unit: Foundations of American Democracy
This unit from Khan Academy provides many lessons and practice sessions over the foundations of American democraccy. This lesson is intended for students taking high school or college level American Government and Civics courses,...
Khan Academy
Khan Academy: Us Government and Civics
An entire course on US government and civics - we don't seem to have any of it; many individual lessons to harvest. Should be cross-checked against embedded videos.