Twitter expands the walls

David Parry, academicdave on twitter, writes about using Twitter in his classroom.  The most interesting bit is how he found it expanded the walls of the classroom.  Students, having a shared classroom experience and context, twittered while away from class about things that reminded them of classroom topics and events and tied their outside experiences together with each other and with the class.  He also promises a future post on the nuts and bolts of using twitter in the classroom.