Petals Around the Rose: Fraternity Register

My first theory was that each die was either positive or negative in value, and that the values would end up to be equal to n/2, where n was the answer to the roll. I ran sets of numbers through all possible combinations of addition or subtraction to determine whether my theory was correct or not.

I figured it out while sitting in the computer lab, watching the snow fall during a winter storm. I guess what they say about left-brain/right-brain is true; I got it wrong when I was in "math mode", and got it right once I relaxed into "art mode".