From a fellow colleague, “The immediate improvement in ear training, facility and technique in both right and left hand technique, tone production, and the understanding of key signatures and its relationship to music theory is undeniable.”
Galamian Acceleration Scales are simple yet dense with skill mastery. Vary the number of octaves and tempo based on your skill level. One doesn’t need scale books, just a metronome, drone (continuously played first note of the scale) and basic knowledge of finger patterns to improve fingerings, facility, subdivision, bow pressure and placement management, intonation, intervallic ear training and dynamic control. If I could only do one warm up for the rest of my life, this with extended arpeggios would be it.