Classroom Management Tool
Back in the good old days, a “classroom management tool” would have been nothing more than a wooden yardstick. The one the teacher used to hit kids who fell asleep, tried to wander off, or said something stupid. It seemed to work pretty well, but after a while they decided everyone should be nicer. So someone invented this idea, where teachers can keep track of kids with pieces of paper and other symbols instead of brute force. It seems to be working fine too.