EdCamps are ad-hoc “unconferences” organized by and for educators that have mostly been focused on K-12 education.

In an article last fall, Justin Reich and Dan Callahan stated, “Edcamps are responsive to the needs of participating teachers, free to attend, inexpensive to host, free of vendor presence, and organized around the belief that attendees each have knowledge worth sharing.”

You can learn more about the EdCamp model via the EdCamp Foundation or the EdCamp wiki. There are also several videos online that can provide more context.