I snagged some books from R8's gutter shelf so I could use them for box assignments. Among the craft magazines and American Girl books, I found this one- The Math Book for Girls (and Other Beings Who Count). I picked this up in the fall the library sale (wow- I still have to wait until May for more fun at the library sale. Sigh.).
Sections of the book include The Mathematics of You, Shape Up!, Party Math, and Math to the Rescue. It has specific problems and puzzles relating to real life math and you even get to meet women who use math in their careers. Pretty cool.
It appears that there is a Science Book for Girls and Technology for Girls Book if you enjoy this one.
You can find The Math Book for Girls at Amazon and Barnes and Noble. Or maybe it will catch you by surprise at a used book sale!