Please help me design a experiment involving Binocular Vision? I need some ideas?!?

I have to design experiment to prove natural selection by simulating changes in a population due to an adaptation. The adaptation that i chose to do was Binocular Vision. The experiment that i have to design involves quantitative data so i'll need an experiment that will involves numbers,percentages, or etc. I... show more I have to design experiment to prove natural selection by simulating changes in a population due to an adaptation. The adaptation that i chose to do was Binocular Vision. The experiment that i have to design involves quantitative data so i'll need an experiment that will involves numbers,percentages, or etc. I really don't know how to design an experiment to prove natural selection with Binocular vision. Oh and I can use my classmates to help with examples and record data and such. and we could bring in materials that would be needed.
I have a few links that might help with some ideas:
1) http://www.libraryvideo.com/guides/J1023.pdf (scroll down to the part that says Binocular Vision in big red letters)

2) http://www.ehow.com/how_5003305_test-binocular-vision.html

Here's the introduction on my homework sheet:
"Natural selection takes place without human control or direction. Overtime, natural selection results in changes in the inherited characteristics of a population. These changes increase a species' fitness in its environment. Natural selection cannot be seen directly; it can only be observed as changes in a population over many successive generations.
You are to design an experiment to prove natural selection by simulating changes in a population due to an adaptation."
Update: thanks mark, u really helped
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