Lynn,
It is great that you are working on this with your daughter. I think it would be great if you told her that you struggled with math too in school (if you haven't already). Let her know that it is okay to struggle and find something a challenge. Helping her lets her know that you value her learning and think math/science is important. I think it is so wonderful when parents (mothers especially) get involved in their daughter's learning of math and science.
Okay i'll get off my soap box.