Early release! Video of Zig's Opening Keynote at the 40th Annual National Direct Instruction Conference is now posted. Laura Doherty from Baltimore Curriculum Project is also featured, starting at 44 minutes.
{videobox}gxVHkOKXFpw#0:0:05|40th Annual DI Conference Opening Keynote (2014) ©NIFDI|{/videobox}
See keynote addresses from other years here: http://www.nifdi.org/resources/videos/siegfried-zig-engelmann#NatlDIConf