[RiseofAsia]

This is why it is important that one parent must be at home during their childhood time.

I even installed camera at home to spot check my kids when they were still in primary school.

Now my kids are in secondary school.
Adolescent period, kids will be quite rebellious, will start to debate and argue with parents. Never throw your tantrum too quickly. Listen to what they say first before whacking them if they have poor attitude.