I’ve been pointing people to Dan Meyer and Andrew Stadel 3-Acts. I just received an email from Chris Robinson, who uploaded a new file on Global Math Department that includes Dan and Andrew, but has links to a lot more people out there who are jumping on the 3-Act bandwagon.
Check it out: Global Math Dept.-Three-Act Math Resources
He also included a presentation describing the 3-Act Process: Global Math Dept. Three Act Math Presentation