My daughter is in the fifth grade and consistently has trouble with math.  She uses ACE at this time.  Does anyone know of another math curriculum that she would benefit from?

Have you tried Math-U-See?  My son had trouble until we started using this.  It concentrates on one area of math at a time....worksheets do not have to be completely filled, I teach the concept to him, then he teaches back to me, we do a few problems on paper.....and the great thing is.......the book keeps up with the new areas learned by giving problems for each area that has already been covered on the new worksheet to be done for the next lesson, so he doesn't do a whole lot of repetition to get bored, but enough to remember how to do it.   Also comes with great video that shows you how to teach to him, or maybe your daughter could watch the video herself and it would help her.  Hope this helps!

I second Math-U-See.  We're only on Alpha, but my son loves doing math with Math-U-See.  He loves to watch the lesson on DVD and "play" along with the teacher as he teaches concepts.  There's lots of practice sheets and more available on an online worksheet generator, but there is no requirement to do the sheets if the child already has the concept.  We've had a couple of lessons where my son was able to just take the test and call the unit done.  It's very flexible.

The site is www.mathusee.com if you want to take a look.  You can request a demo DVD from them.l

We're using Teaching Textbooks for Algebra I and I have friends using their Math 7 (about a 5th grade level) and LOVE it.

www.teachingtextbooks.com

They have placement tests.

I would first, before choosing any curriculum, know your DD's learning style and then choosing a curriculum based on that.  My son would dry up in a heartbeat with ACE or Saxon.

If she does not have her addition, subtraction, multiplication or division facts memorized then you might want to refresh her on those before trying to move forward.  There are free math games, worksheets, etc. online if you want to take some time off and do some "fun" review work. 

Also, if (which I haven't ran into many girls that are, but....) if she likes Pokemon? (my son loves it), there is a site called www.pokemonlearningleague.com  and I love it!  When I am teaching him something, if he does not quite get it, then I use the pokemonlearningleague.com movies to show it to him again.  Seems like after that it unlocks what he was having trouble with.  Granted, some of the lessons do go a little deeper than his level right now, but I tell him that that is ok, we will get to that part in a little while, and he is fine with it.

I 3rd Mathusee!!!  she needs to memorize those math facts before moving on.