ScIeNcE fAiR / pRoJeCt BaSeD lEaRnInG

It's that time again; Science Fair time. Last year, I did a project on which type of saddle pads kept the horse coolest during high-intensity workouts. Looking back now, I realize why I didn't win anything very special when I voluntarily went to the Regional Science Fair. I didn't have a very strong hypothesis, question or investigation/experiment. 

So today when we were talking about SF in science class, my teacher told us we would have options this year. We could either do a SF project - which is, obviously, your standard science fair project with testing, discoveries, and such. Or, we could choose to do a Project Based Learning project; worth the same amount of points and just like a SF project, just with less testing and more discovering or researching. The first thing that leaped (lept?) into my mind when we began talking about SF is doing a project on horses, just like last year - only better. Then, when we were talking about our own specific projects, I realized I wanted to do something on the equine digestive system (a very broad topic), or perhaps colic (a more narrow topic). 

I'm undecided, but maybe you guys could help me decide. Science Fair or Project Based Learning? Digestive system or colic? 

What really helped me in the beginnings of understanding of the digestive system today were Kate's posts at A Year With Horses. Here are the links so you don't have to go searching:

Overview 

Part 1 - Mouth 

Part 2 - Esophagus 

Part 3 - Stomach

Part 4 - Small Intestine

Part 5 - Cecum

Part 6 - Large and Small Colons, Rectum And Anus

Thank you so, so much to Kate for posting these posts! They have been forever helpful to me! :)