. Put kids in touch with the world. The classrooms of brilliant teachers [hokey metaphor alert] have no walls. Those teachers "get" the flat world challenge, understanding that tomorrow's citizens and workers will have an advantage if they can work successfully with other cultures. From "keypals" back in the day to Vicky Davis's Flat Classroom Project today, brilliant teachers give even the most remote students a glimpse and dream of the bigger world -- and help them both communicate and empathize with those in it.