It has apparently been shown, years ago and on a limited sample, that avoiding arithmetic until 7th grade (in favour of general discursive education) can produc

It has apparently been shown, years ago and on a limited sample, that avoiding arithmetic until 7th grade (in favour of general discursive education) can produce good results in terms of the ease and success of eventual learning of arithmetic: http://www.inference.phy.cam.ac.uk/sanjoy/benezet/ http://www.inference.phy.cam.ac.uk/sanjoy/benezet/