It's a grade school ritual that usually takes place once a week or so at the start of the day. Some teachers found this to be silly and were eager to make sure

It's a grade school ritual that usually takes place once a week or so at the start of the day. Some teachers found this to be silly and were eager to make sure kinds knew it was voluntary or would come up with a better way to spend the three minutes. But some teachers would take it very seriously...