Growing up on a Pennsylvania farm gave me lots of opportunities to use mathematics -- counting sheep, choosing patterns for planting, and many kitchen tasks. I also enjoyed occasional times to join friends at in-town playgrounds and, on their paved areas, hopscotch was one of our arithmetical and geometrical activities. Recently I came across a wonderful online collection of poems by Maya Angelou (1928 - 2014) -- and, within it, this slightly mathy poem that includes hopscotch and also speaks of racial injustice:
Harlem Hopscotch by Maya Angelou
One foot down, then hop! It's hot.
Good things for the ones that's got.
Another jump, now to the left.
Everybody for hisself.