CBL: "Make a Difference"

As I mentioned in Some Great New CBL Resources, I have conducted a challenge based learning project for a few months.  Tomorrow, I will be officially launching my AP American Government Challenge:

Make a Difference

Flickr CC by sheffpixie

Its aims are a bit paradoxical:  I want my students to engage in a rather sophisticated concept (political efficacy) through a very simple challenge.  This is certainly the most open-ended challenge I have ever presented to a class.  But each time I do this (Is this my eleventh CBL?), I seem to let go of the reigns and trust the process a little more.

In a couple of weeks I'll share my students first responses and reactions.  Wish us luck!