S.M.
Hi M.,
Sounds like my daughter!!!! She is now 7, it has gotten better, but we still struggle with the yelling and temper tantrums. My daughter is now old enough to understand consequences which helps control the behavior.
When she was younger we went to a psycologist who said that we should simply state, "I will not listen to you or talk to you until you speak in a quieter voice". Sometimes it works.
Good luck,
Sarah