Educational Wiki Sites

After doing some search on the 'Net, here are two that I thought I would like to model after/learn more about:

• http://cartierm.wikispaces.com/ : It's a wiki done by a middle school teacher.
  
• http://gmiller.wikispaces.com/
  

I also found a good resource site for teachers: http://wiki.classroom20.com/ Here are lots of 2.0 tools used by other teachers.