The missing part of mathematics education, IMO, would be to focus more into developing the intuition of what something means, instead of the current focus on getting some (numeric) results.
That was one of the biggest changes that happened with common core. Common core itself didn't really mandate this, but it took a reset of the curriculum to insert the new ideas like an emphasis on intuition rather than rote arithmetic.
That was one of the biggest changes that happened with common core. Common core itself didn't really mandate this, but it took a reset of the curriculum to insert the new ideas like an emphasis on intuition rather than rote arithmetic.