Spots!
I was dealing with the concept of Martian Gravity in my kids class last week, trying to figure out a better way of doing it. And then I recalled seeing something in the supply closet of the facility where I teach. They were ten inch rubber spots, suitable for setting on the floor and are sometimes used for boundries in games and stuff.
I was inundated tonight with 12 students, 6 brand new. I dropped the spots on the floor where I wanted them, told each student to pick one and got to it. No more Martian Gravity! It kept the spacing safe for the whole class and no one got lost or wandered away.
I love spots! It really made teaching a great deal easier!
Respectfully
Mark W. Swarthout, Shodan