It's wrong to lose your temper.
Mr. Nelson is an English teacher who has trouble being patient and is teaching a rowdy group of students.
Mr. Nelson wants the students to behave.
Mr. Nelson switches to an activity-based teaching style to channel his students' energy and engage them.
Mr. Nelson loses his temper and loudly tells the students to be quiet, lamenting how undisciplined they are.
The students love Mr. Nelson's class because they get to do lots of interesting activities.
The students feel hurt and resentful and lose respect for Mr. Nelson, talking about him behind his back.