For the coin toss, I use a Kennedy half dollar. Kennedy for heads, Independence Hall for tails. I always ask the captains where Independence Hall is. So far this year, I've done coin flips with approximately 50 different captains with ages ranging from 7th to 11th grade.
So far this year, not a single player has been able name where Independence Hall is. Over the past years, it is similar, with maybe only 1 or 2 kids a year knowing that.
I realize this is anecdotal, and knowing where Independence Hall is, isn't the most important thing to know, but it is a key location in our nation's founding, and it is sad that nobody out of 50+ kids know that factoid.

Where it all started.