This activity comes from teachers at a local high school. They gave me permission to share it.
The short form of this activity is that you tape out a giant coordinate grid on the classroom floor, or the school gymnasium, if you can get access for a few classes. The students become human manipulatives by becoming points on that grid. They model points, lines and slopes.
The activity is very clearly explained in this word document. Human Coordinate Geometry
I’ve taken the liberty of preparing a word document that you can print to make the student cards described in the activity. Human Geometry Points