Sarah's version:
When the bags have spots, we can make the bag hot or change the kind of wall
piece and the spots go away. The walls of cells may also have spots that do
the same thing! We ask many questions. How fast do the spots move? Why do
we either see a bag that is all grey or see black and white spots, but not
grey AND black and white? Is the black part of the wall always thicker than
the white part? Can we write a paper that is so beautiful that students here
become well known? (I hope so! They have such big brains and are so much fun
to work with!)
We look at small bags, smaller than a hair wide, that form all by themselves!
Each bag has water on the inside and on the outside. The wall of each
bag is not hard, it can move. What if the wall is made of two types of pieces,
black and white ones? If all the pieces like each other, then from far away, the
bag will look grey. If they do not, then the wall will be made of only one
black spot and one white spot. We take very beautiful pictures of bags with
spots.