A good Yglesias education piece out in the light of day instead of paywalled. An education person I trust says he's broadly right here, though there have historically been *some* places that do drill and kill.
Why Schools Need a Phonics-Style Reckoning for Math
Yglesias: Teachers should embrace showing kids how to tackle problems — and then make them practice until they get good at it on their own.
the74million.org