If you shout orders at a child, you’re off to a bad start. The best way to get on the wrong side of someone is to shout at them and tell them to do something they don’t want to do. And with a challenging student you can multiply this effect exponentially. Add to this the fact that there are probably 30 other kids in the room who enjoy seeing arguments and you can see why this could go badly. Many students actually try to get their teachers to lose their tempers (and their control) because they find it amusing or entertaining. That is why it is so important that you keep your composure when managing a classroom.