Although this site does not focus on topics of east Asia, this site does feature teaching activities that are focused on east Asia. Most of the lessons, however, revolve around east Asia and its relationship to the United States. There are particularly good resources about US - Japan relations during WW2. There are a lot of resources, but the best ones are the ones marked "Teaching Activities." If you click on teaching materials, it will take you to all of the different resources the site offers. All of the resources revolve around works done by Howard Zinn. My favorite resource surrounding east Asia is a role play around the internment of Japanese people in Latin America, not just the United States. Below is a link to the lesson. It flows very well!
https://goo.gl/43xiJQ
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