I have a classroom Twitter account. When I have a sub (see my post here at Edutopia) I can twitter to a "Twitter Captain" and answer questions and ask questions, etc...I follow some feeds that make for some spontaneous mini-lessons as they pop up, but, frankly it isn't as powerful as when other classrooms are involved. There are a few other classrooms involved, but I want more. With more windows open to other classrooms, Twitter can be used so much more collaboratively.
We've twittered advice on test prep to students, shared our eureka moments, asked questions of others, answered questions of others, etc...right there on the LCD projector in the background of the classroom. It becomes this academic backchat that is a form of tech differentiation.
Want in? It's easy and I'll help you set up. We can set up times to be online so that we can get the most out of free, real-time communication between classrooms.
Let me know! Follow us @wolpertsclass, but when you ask to see us, make sure I know you are a classroom teacher or I won't grant permission.
Hope to see you there!