Denise’s thoughts: Have you asked her why she is angry? The first step is always finding out what is going on. If she won't talk to you, who will she talk to? Define the problem and then help her with it.
While preteens have mood swings, I think the answer is much more than something that simple. Kids with mood swings act out of frustration, generally yelling and/or being rude to parents or siblings. Doing homework and not turning it in is a control issue. Your daughter is not only angry, she needs to feel in control. Needing to control is normal teen behavior, creates independence, but why she is angry needs to be addressed so she can turn it around and be successful in what she is controlling. If there isn’t something going on at home, talk to the teacher and find out what may be going on at school.
Asking the community: Has your teen ever acted out this way? What was the problem? How did you handle it? Share your experiences, thoughts and advice in the comments area.