This site covers a wide swath of history across Asia. Primary sources as well as lesson ideas.
This is a collection of digitized e-books and a database of full-text web resources.
from the site: "The e-Asia project (2000–2011) was funded by the University of Oregon Libraries through the generosity of Nissho Iwai under the leadership of Robert Felsing, East Asian Bibliographer"
There is much here that can be used in classrooms - search by topic or use the navigation bar to filter your quest.