[artpepper]

The author seems to be attacking common core ("so many different ways to think about simple addition") but then links it to self-esteem, without actually showing the connection. How does he know the math curriculum was designed to boost self-esteem?

Also, the ability to do rote sums is not the same as understanding math. So the fact that his son "could add up already" doesn't mean much, at least out of context.

[sebastianconcpt]

How math curriculum boost self-esteem? You mean like being able to calculate precise predictions of any model of any discipline? In what way do you think that can possibly influence the self-confidence of anyone?