Another great resource for those teaching World History or Geography (AP World History especially). The site is incredibly valuable for those trying to push comparative analysis across regions and time periods. Be sure to check out the "Curriculum at a Glance" section to understand how they've set up the site, but basically they boil down all of World History into 9 "Big Eras". Each era is equipped with overview readings focused on major themes across time periods, and comes with a set of lessons. The lesson plans are particularly useful because they fill in the gaps left by most World History textbooks, especially in terms of East Asian history.
http://worldhistoryforusall.sdsu.edu/
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