Children may act up in class in an effort to get attention.
misbehave (for people); not work properly (for machines)."The babysitter had a difficult time because the children acted up all evening." "I guess I'd better take my car to the service. It's been acting up lately."
misbehave badly; act in a silly or improper way; "The children acted up when they were not bored
malfunction, operate abnormally; behave strangely or abnormally; behave in a disorderly manner, behave disobediently; show off, behave in a way that draws attention to oneself
If something is acting up, it is not working properly. She was messing with the coffee pot, which was acting up again. = play up
misbehave badly; act in a silly or improper way; "The children acted up when they were not bored"
munasebetsiz davranisla rahatsiz etmek,yaramazlik etmek