Look no further: http://k12onlineconference.org/
Welcome to the K-12 Online Conference!
The K-12 Online Conference invites participation from educators around the world interested in innovative ways Web 2.0 tools and technologies can be used to prove learning. This FREE conference is run by volunteers and open to everyone. The 2008 conference theme is “Amplifying Possibilities”. This year’s conference begins with a pre-conference keynote the week of October 13, 2008. The following two weeks, October 20-24 and October 27-31, forty presentations will be posted online to the conference blog (this website) for participants to download and view. Live Events in the form of three “Fireside Chats” and a culminating “When Night Falls” event will be announced. Everyone is encouraged to participate in both live events during the conference as well as asynchronous conversations. More information about podcast channels and conference web feeds is available!
Call for proposals: http://k12onlineconference.org/?p=218
I attended the first two (2006 & 2007) and found them to be well, well worth my time.