Presentations Thanks PLA! by Michael Stephens|Published March 29, 2010 Caval 2009, originally uploaded by Lester Public Library. I had a great time in Portland for PLA. It was nice to catch up with folks I rarely see and to spend time in a great Northwest city. I also enjoyed talking about my research project. The slides are here: PLA Learning 2.0 PresentationView more presentations from Michael Stephens.