Probably a simple solution but I can't think of a way to do it
Alright, I plan on being a teacher once I graduate university and do teacher's college and I want to teach high school students. During my time at university, I have had the extreme pleasure of having some amazing history professors (I specialise in history with a minor in mathematics), one of which was for my class on the Holocaust.
On the second class, he asked people what a good way was to represent the number 6 million. It is a huge number that has lost its meaning and he wanted to show us something to make it a little more real. So, he brought out his representation of it that was made by one of his colleagues.
He brought out this extremely long roll of laminated paper. On this very long roll was a lot of squares. The squares were made up of dots. I believe that the dots were 100 dots by 100 dots so that each dot represented one person and each square represented 10,000 people. This hit pretty much everybody in the class pretty hard, including me and ever since then, I've been curious how to do it.
I am curious because I want to do the same thing for my future high school students. High school students hear the number 6 million, but it isn't really real to them. This would be a good way to do so I would think.