Sounds like laziness to me, which is of course rampant among teachers. It does amaze me that googling "common core math" brings up the things it does. Even in

Sounds like laziness to me, which is of course rampant among teachers. It does amaze me that googling "common core math" brings up the things it does. Even in a world where we have access to all information, everyone seems to be trying to bullshit everything. I find it very difficult to find the facts on most things. But when I saw that Khan Academies methods were starting to mirror "The Great Courses" "Secrets of Mental Math"[1] and that it was a part of the common core, I was impressed. Once I started learning things this way, I was better able to handle all math. I used to hate it, dread it. But this kind of thing makes it easy and fun. I'm glad kids are being exposed to it. [1] http://www.thegreatcourses.com/courses/secrets-of-mental-math.html?cid=1406 http://www.thegreatcourses.com/courses/secrets-of-mental-mat...