Well I am very excited. A long time ago I wrote an excited post about collaborative build servers, they didn't really take off. I think it was probably because the community was not entirely large enough and there were not enough contributors to get it fully operational.
Now however I think that the community has grown enough, and the push has come for a Google+ hangout. Even better the MinecraftEdu community might be getting a server for collaborative connections hosted at Temple University and having this alongside Google Hangouts could create a great place for MinecraftEdu teachers to collaborate, learn and generally chat with other teachers from around the world. The possibilities for global classroom connections are huge, as are the training opportunities for people just beginning to use MinecraftEdu.
So the first hangout is happening this weekend (my time) and I am super excited. We are hoping to use the latest test build of MinecraftEdu including Forge and some of the mods the community would like to experiment with. If you would like to be a part of this you should check out this post on the google group for instructions on how to get on board.
My Maths world has almost taken a little bit of shape, I have imported a wizard tower from http://www.minecraftforum.net/topic/259190-shop-the-medieval-construction-kit/ as the starting thing and am seriously considering opening up the world for some students to help me build, but I just have not found the time within school hours to do so. I am hoping to have the first activity ready to go by this weekend so I will try to keep the updates coming.