One major Common Core change is in the pace of math taught in the early grades. Teachers now cover fewer topics but in greater depth. The goal is to achieve mastery of the basics early on. The theory is that previously schools throughout America taught too much, too soon. The controversy lies in the fact that for some advanced students they are in essence being held back from their full potential. Some can learn more quickly than others and this system appears to teach to the middle. What do you think?