The website APPitic.com, an app resource site with more than 6,000 apps in more than 300 subcategories, breaks down challenge-based learning projects into four steps: Finding & launching a challenge, moving from challenge to solution, implementing a solution, and sharing findings.
This resource is very helpful as we move forward and freshen up our PBC/PBLs. Nice to have a few more tools in the toolbox!
The article in its' entirety can be found at:
http://www.eschoolnews.com/2015/02/20/challenge-based-apps-828/?