My son is taking violin lessons from a new teacher and he has him playing scales in a way I haven't seen before (I took violin lessons many years ago). In, say, a three octave G-major scale, he teaches some kind of flourish at the beginning and end of the scale. Instead of going from g to a, b, c, d etc. he tells him to start with g, B, A, g ( or something like that...) -- then up the scale in the usual way and finishing with the same flourish.
I'm not questioning this, just curious as to the reason..
Thanks