Gender Differences

We all know that many differences exist between boys and girls, but what is the best way to provide for those differences in the classroom? I teach 5th grade, and it seems that boys and girls couldn't be more different at this age. I have had a lot of trouble out of my boys this past year, but hardly any at all from the girls. The boys seem to be much more rowdy and defiant, while the girls, for the most part, are happy and content to work quietly and obey. I wonder what to do to handle these differences effectively. Any thoughts?