http://www.indiana.edu/~easc/publications/teams.shtml
The URL above leads to the Indiana University East Asian Studies Center. It includes a number of publications including Teaching East Asia in the Middle School. These lesson plans were developed by Middle School Teachers and are based on the National Council for the Social Studies themes. The website is simple to navigate and has plenty of useful information and East Asia related links for additional resources.
Lesson themes include:
People, Place, and Environment
Technology, Production, Distribution, and Consumption
Cultures, Continuity, and Change
Aesthetics, Celebrations, and Values
Instructions, Power, and Government
United States and Global Connections