1.) I missed the concept on this with the 6 color coded sections throwing me off. The six shapes had walls that would not allow the black or pink squares to pass through. So I was thinking of molecules interacting with one another without the ability to pass barriers.
3.) A magenta turtle represents an infected organism that has a set time before being deleted.
I didn't see the terrain color matching the territory color that often, but occasionally objects would head in the opposite direction when this occurred, expressed mathematically by -180 degrees.
4.) Well, even thought got this wrong, it was nice to have to struggle through the possibilities. You really have to look at each component part and go through a series of diagnostic questions.
So I would use a similar approach of having students record observations and then make interpretations.