So I'm going to try and go full PBL this year in most of my classes. I've dabbled with it before, and it's worked, but only as a "this is a one unit PBL" or even worse, a single project based on learning (which isn't PBL, but it's closer than not).
Students will be going through "lives" as adults with a specific income, job, spouse, family situation, etc. They will be making various life choices all including math - choosing the best buys at a store, picking a cell phone plan, planning a party, designing a garden. I've managed to put them entire BC curriculum into various projects.
Students will be creating a digital textbook of all the required learning outcomes this year. They'll get given an outcome at the beginning of the week, and within (I think) about two weeks need to have a summary, definitions, a lab, some problems, diagrams, etc. All the things that would go into a textbook section on that outcome. I'll then have them create an ePub version with all their content (including video!) to show parents on iPad's and eReaders.
My biggest concern about both of these will be the "this is what is happening all year" type of approach - I'm not sure how students will respond to both having one "project" for the year, and having the freedom to work on their own or with groups, at their own pace (within reason) and without the daily grind of lecture->homework->submit->test. Essentially, it will be new for everyone!
If anyone has done anything similar, I'd love to get in touch!