Ther seems to be a lot of talk about how girls need to be encouraged in the stem subjects because there's a general generational attitude that those are stereotypically boy subjects, and also that many school teachers are more language arts oriented and uncomfortable with math themselves due to their own upbringing. The homeschoolers (and those who homeschool afterschool) talk about a couple of math books that teach mathmatical thinking to young kids, "Life of Fred" series (the young kids version is called cats, dogs, apples, butterflies). That series is kind of story based to teach mathmatical thinking to the language arts oriented mind. Beast academy (starts at a 3rd grade level and leads into Art of Problem solving). That series is to teach the skills for difficult problem solving, mainly stick-to- itveness and patience. The problems should not be obvious in that series and the kid should have to spend some tome thinking about it, maybe days, maybe get stuck and come back. That's the point of that series.
This is just by what I've read about those books, I haven't seen those books in person.
For calculation speed sign her up for SumDog, you can use the free part. It's online. For conceptual part you can use Khan Academy, also free online, but it's not as cartoony.
