To be completely honest, in school I was always one of those people who thought doing excessive amounts of writing in a math class was pointless and unnecessary.  Math was supposed to be about numbers and solving problems not writing.  However, throughout high school I was forced to do math papers about a problem and journal entries about my solving technique.  I watched as peers started understanding math better, maybe not liking it more, but they definitely were catching on to concepts easier and quicker.  I started to realize that this writing process was beneficial to students even myself.  I wrote a paper about how to solve for the height of a tall building and my process of actually solving it.  To this day, I remember the exact steps of how to solve it.  Granted, I am going to be a math teacher so I should know this information, but I distinctly recall everything about this problem and solution.  This article proves a point that I was slowly coming to on my own; writing does belong in a math classroom.  I think the main thing students should write about is how they solve a problem.  They can write a more formal paper or a simple journal entry, but when they write about the process, they are internalizing the information and that is the most important part.  Through this writing process, students start to appreciate math and become less confused.  Maybe they'll even start to like math!