There are many wikis created for teachers, helping them learn about Web 2.0, specific applications, instructional practices and more.
Most of these are wikis that I have created for teachers in Buhler or for presentations.Infographics in Education
Opening Minds with a New Set of Keys Countdown to Christmas - an advent calendar for teachers to help them learn a new tool each day in December (created in December 2009). Oh the Places You'll Go - a wiki for Buhler Grade Teachers on Google Earth and their Dr. Suess theme (created August 2010). See What You Mean - Visual Literacy
Quilting - Using Pages to make quilt blocks (This is still a work in progress!)
Pages - tutorials on how to use Pages Interactive Whiteboards - help for learning how to use the interactive white boards Differentiated Instruction Buhler Fifth Grade - each K-6 PLC has a wiki for adding their yearly plans and online resources, this is just an example of one grade level Buhler Technology - a wiki full of tutorials for tech cadre Settle Down - a wiki for 5th graders on the early settlements (created in November 2010 - I revealed a page each day until Thanksgiving) Slide Videos
Research Recipe - many resources for research
Metrics for Sixth Grade
12 for 2012 Gwen Lehman from Larned just started this wiki to introduce teachers to some awesome technology tools.