Click on the link below for an additional technical exercise for practising slurring over two strings. Play it slowly at first, with your metronome set to around crotchet=66, then gradually speed it up to crotchet=100. Try to make the string crossings as legato (smooth) as possible. Remember to keep your bow close to both strings so that you don’t have to move your arm too much.

Slurring over strings with stopped notes