Re: Not sure about lack of mathematical knowledge being the reason
I had more female math teachers only until I reached high school. There the numbers equalized, but the men were superior teachers. In college the numbers were again about equal. I might give a slight edge to the women, but that may also have been a function of class size. The men were teaching classes of 250, the women 80. Eventually I got it though my thick skull that no matter how hard I worked at it, arithmetic and I didn't get along and my schooling didn't cover some key formulas I hadn't learned to recognize (any rotated curves, everything we did was along X or Y and they claimed the rotation was obvious, it's not).