New precalc project... (why do I do this to myself?)

As an end-of-quarter project I'm thinking of assigning something like this.  I'll have the kids take a picture (maybe offer the option of working in pairs, but then they have to do 2) then using Geogebra come up with a equation that fits it.

So for the past 14 hours or so I've been trying to figure out how to use Geogebra.  To say that I'm not fluent with it is a massive understatement.  I figured a couple of things out, but I ended up e-mailing Steve Phelps (a Madeira High School teacher who runs Geogebra workshops) to help me out.  He was amazing.  Within 10 minutes he'd e-mailed me directions to use the regression capability plus two screencasts on how to adjust the picture. 

So I think I have the basic idea of the project down.  Now I'm just trying to figure out how I can get the kids to turn it in.  I'd like a hard copy, but I'd also like an electronic copy so I can put some on the class blog.

And thus begins my new challenge.

Oh, did I mention that I want to give them the assignment on Thursday and have it due sometime next week?  The end of the quarter is next Friday.