My 6 year old daughter seems to think lately that she needs to argue about EVERYTHING! Some examples are like last night she was to brush her teeth, I heard her only brush her teeth for literally less than 30 seconds and then she argued that she did brush them good after I told her I heard her brush them for such a short time. She was playing the xbox and I told her that she had 10 minutes left, then at 5 minutes I let her know 5 more minutes. I lost track of time doing my homework and she got an extra 5 minutes, when I told her it was time to turn it off she argued it hadn't been 10 minutes, I explained that she got an extra 5 minutes because I lost track of time and she argued no I didn't over and over. She takes a shower every other day and on shower day she will argue that she took a shower yesterday when I know for a fact she did not. She doesn't just argue for a second and let it go, she can be relentless if I don't put my foot down. It is getting to the point that when I tell her she needs to stop arguing, she will argue that she is not arguing! I have disciplined by taking away the xbox, other electronics, last night she wouldn't stop arguing so I sent her to bed 30 minutes early, but none of these seem to truly work or fit the crime.
I would really like some age-appropriate discipline ideas that work for you mamas.