It's worth pointing out that Boaler's work is fairly controversial. There's a review by Bishop, Milgram, and Clopton that refutes many of her claims. Her work is interesting, but it seems that much of its appeal is that it confirms people's suspicions that the way they learned math was wrong.

To be fair, I don't know what the right way is. A lot of very different approaches have produced successful mathematicians. How to teach math is a recurring controversy in mathematics, and a scan of the Bulletins of the AMS will convince one that mathematicians are working on the same gut level that everyone else is, unfortunately.