Use utility chairs with upholstery rather than plain metal folding chairs or wooden chairs. I'm not a fan of secretary style chairs with wheels. Kids will crank it up when left unattended. My response is ' don't let the hardware set-up interfere with your educational objectives .' 3. They cut off teacher-student interaction.
Headphones interfere with teaching.
They cut off student to student interaction. This advice is particular to most of the software we have today. It begs for discussion. I'm not sure I want to be relegated to the role of software adminstrator for a large part of class time. You can buy multi-jacks for two or more headphones per computer.