V.H.
Hi B.,
I have 5 kids ages 3 through 10. My 8 year old and my 10 year old have gone through the same thing your 8 year old is going through.
I have tried similar things as you, and have most definetely ruled out ignoring the situation. It only gets worse if it is ignored because they have gotten out of what they were asked to do. They see that they have won. I have learned that it must never be ignored, even if I am tired and don't feel like dealing with it. If I deal with it every time, their behavior gets better.
I have tried responding to their dirty looks and huffs with a calm response like "Well fine, if that is not enough for you to do then you can clean the bathroom also." That has helped a lot because they don't want to do any more than they already have to.
I also have to take privileges away, which is hard and takes a lot of work on my part(I am a bit of a softy on my kids), but it does work if it is done consistently. I make sure it is something they really like to do, like no video games for a week. Their behavior gets better real fast if I don't give in. On occations when I have not followed through, their desire to do what I have told them to do gets worse.
I do bring Dad into situations because they listen to him better than me. He is a great help and always tries to teach them that if they won't do as Mom has told them to do then they will have to face Dad, and he is not as soft as I am.
I recommend Dr. Dobson's video on Discipline from www.family.org. I think you'll find it a great help with many ideas to try.
My kids go through stages. They are really obedient for a while then they decide they need to test the limits for a while. I have learned the most important thing is to stay consistent and never ignore bad behavior.
I know it is frustrating, but try to enjoy the teaching stages too. One day they will be all grown up and on their own and we'll be looking back wondering where these days went. Good luck and blessings to you and your family!