What should I do if my kids are being too loud?
The answer is easy: DO NOT SHOUT! What is the point in yelling “SHUT UP”? With them yelling and you yelling at them, it’s just gonna be mayhem. If you want to save the situation, just keep calm, arms folded (which is quite a hostile position), and with a serious – though not angry – expression on your face.
Wait for them to notice the change, and believe me: it doesn’t take long! Generally one of them will give the alert. When they are silent, just explain the situation to them, always emphasizing the correct behaviour.
Now you can start your class!