I had a hard time with math in school. It did not come easily to me and like most things which didn't come easily I made no effort to master it. I did have a teacher in 5th grade who required us to write out the multiplication tables 1-12 every day. I don't think I would have got multiplication without that.
I think about that when I read all the back and forth about Common Core. The Half of The Glimmer Twins to Whom I'm Not Married has taught high school and middle school math for many years so I listen to her when she gives her opinon on the subject.
Even if I were not mistrusting of the epistemological child molesters at the NEA and Department of Education, the significant involvement of the Gates Foundation, Pearson, and Achieve, Inc. is enough to give me pause.