EdCampATX is an un-conference. There is no agenda. Participants suggest topics they would like to explore, those ideas are aggregated and sorted into sessions without a leader. Anyone can share what they know about the topic. Anyone can ask questions.
This year's EdCamp was divided into four sessions. I attended Design Thinking Process, Special Ed, Google Classroom, and Google Tools. My favorite was Design Thinking Process. A few participants had experience using it in class at different grade levels, and some had used it as a tool with teachers for professional development. Questions from the group would elicit suggestions, resources, and more questions. You could almost see the lightbulbs going on over participants heads. Check out Design Thinking for Educators, Teachersguild.org, or DesignThinking Crash Course to get a feel for what it is all about.
The other session I found most enlightening was the Google Classroom tips and tricks. Varying levels of familiarity actually made the session more interesting, and I was convinced that I will be switching my classroom site over to Google Classroom because of all the efficient features.
I highly recommend EdCampATX. They will have an unconference at SXSWEdu, and again later next year.