A situation that sometimes occurs is that the teacher thinks he is not obeyed and followed, while the students may be thinking they are not understood.
It is sensible to bear this in mind.
A general reprimanding to all the class while shouting (in English) is like a blow in somebody’s face.
Nonetheless on an oncoming day we can compensate by treating them in another different way. I even know that that same teacher sometimes told his students they were nice people and he had noticed their effort and struggling. / Photo from: elmilmariposas blogspot com