Stanford History Educational Group (SHEG): Excellent resources for lessons, reading strategies, and assessments. On the site you will also find the link to "Reading Like An Historian" &"Beyond the Bubble".
Fordham University: Primary sources for both Ancient and Modern World History
http://ehistory.osu.edu/osu/:Excellent site for both world and American history. You'll find maps, timelines, primary source documents & journals, multimedia resources, and links to other educational sites. Give it a browse...