Compared to the teacher's lesson, the children will experience much more in these lessons, they can try more. They are not so controlled. When there was a rumble in the classroom and the teacher wanted to say something, he did not shout at the students, but whistled. It was very effective. The children were frightened, but the teacher was not angry with them, he just needed to give them a signal to shut up.
When there was a rumble in the classroom and the teacher wanted to say something, he did not shout at the students, but whistled.