Educators have been talking about changing the traditional way of teaching math for a long time, but nothing seems to change. Elizabeth Green's New York Times Magazine article digs into why it has been so hard for U.S schools to effectively implement changes to math pedagogy, and just how far American students have fallen behind as a result. A lot of it comes down to ensuring teachers are comfortable with the new methods, she writes:
"In fact, efforts to introduce a better way of teaching math stretch back to the 1800s. The story is the same every time: a big, excited push, followed by mass confusion and then a return to conventional practices. The trouble always starts when teachers are told to put innovative ideas into practice without much guidance on how to do it. In the hands of unprepared teachers, the reforms turn to nonsense, perplexing students more than helping them."
http://www.nytimes.com/2014/07/27/magazine/why-do-americans-stink-at-math.html