The group is not an average
Following several learners means refusing to melt them into a general impression. Each has a place that catches, a wird, a recent recitation.
Tables multiply when we want to see everything at once, outside the session. The follow-up that helps is the one the teacher opens at the moment of listening.
One place, several threads
Darajet is thought so the group remains a group, and each learner keeps their history. The teacher does not have to rebuild Monday’s table for Thursday’s session.