"The course I took in math education methods was worse than useless."
The worst class I took in education school was on “math teaching methods.” It was taught by my advisor at the time. (I say “at the time” because shortly afterward they changed advisors on me, and she no longer taught courses, but worked with Ph.D. candidates. From what little biographical information I have seen about her, she has not ever taught any classes, math or otherwise, in K-12.)
The math teaching methods class was remarkable for its embrace of every educational fad I detest...