The staff shows the 8 notes of a harmonic minor scale, and your task is to recognize which one it is. On easy you choose from 4 options; on hard you first pick the root note and then its accidental.
Tip: The feature that defines the harmonic minor scale is the augmented second between the 6th and the 7th degree. This leap of three half steps comes just before the last note and is wider than the steps around it.
What is the harmonic minor scale?
The harmonic minor scale is the natural minor scale with the 7th degree raised by a half step (UK: semitone). The pattern is W-H-W-W-H-A2-H (whole step, half step, whole, whole, half, augmented second, half step).
Its characteristic interval is the augmented second between the unaltered 6th degree and the raised 7th. The raised 7th is a leading tone that resolves naturally to the tonic, which makes this scale essential for tonal harmony in minor keys.
Example: A harmonic minor
Start from A natural minor (A-B-C-D-E-F-G-A) and raise the 7th degree (G becomes G♯): A-B-C-D-E-F-G♯-A. The leap from F to G♯ is an augmented second.
The 15 harmonic minor scales
There are 15 harmonic minor scales, one for each key. Each uses the key signature of the natural minor, with the raised 7th written directly on the note. In some sharp keys the raised 7th is a double sharp: in G♯ minor it is F𝄪, in D♯ minor it is C𝄪 and in A♯ minor it is G𝄪. In flat keys the raised 7th is often a natural, as in C minor, where B♭ becomes B♮.
To lock these scales into your fingers, practice them with the online metronome at 60-70% of your target tempo, raising it by 5 BPM each time you play three repetitions without mistakes. The online tuner lets you check your tuning before you start.
Printable worksheet (PDF)
The same exercise on paper, for class: eight harmonic minor scales written on one side of an A4 sheet, half with a key signature and half with the accidentals before each note. The name of each scale is written below it. With a separate answer sheet, with the answers in red.
It goes from easier to harder: first key signatures with few accidentals in treble clef, then more accidentals and the bass clef.

Download the worksheet (PDF A4) Answers
You may print and photocopy the worksheets freely for the classroom. There are also worksheets of this same type for writing and writing with a key signature, and in the scales index you can create custom worksheets, mixing whichever types you like.