This exercise is from my new book Classical Guitar Technique: Essential Exercises, Scales, and Arpeggios. The 122 page book includes: Practice Routines, Tips, 100 Open String Exercises, 120 Giuliani Arpeggios, Scales, Slur Exercises, Shifts, Finger Independence, Barre, Tremolo, Common Harmonics, and much more.
There are hundreds of slur exercises but slur scales cover many combinations and place them in a more musical context. Certain keys will involve a degree of stretching and shifting to accommodate the notes. I’ve ordered the below scales from easy to more complex. Alternate i-m or use any logical right hand fingering. You can play any scale with slurs and I encourage you to discover more keys on your own.