> Until they are old enough Agreed. There is evidence that capability for true abstract reasoning does not properly develop until 12 or so, and that students w

> Until they are old enough Agreed. There is evidence that capability for true abstract reasoning does not properly develop until 12 or so, and that students who are taught basically no math before then catch up to their peers in a matter of years anyways. Before a certain point it is just wasted, probably.