I'm not sure if others are familiar with the Stanford History Education Group (SHEG) or their curriculum, but if you're a Social Studies teacher, I highly recommenced their work. You need to create a profile to access the materials (free for educators), but they have ready-made lessons and document sets to use in classrooms. Their "Reading Like A Historian" lessons are the foundations for many of my units. Topics that might be of particular interest to people in this course are: The Fall of the Qin Dynasty, The Travels of Marco Polo, The Invasion of Nanking, The Korean War, The Cultural Revoltuion of China. Check them out and let me know if you have questions!
http://sheg.stanford.edu/rlh