Scale Degree Names Theory ThingsWilliam Wieland
1 – Tonic
7 – Leading Tone*
6 – Submediant
5 – Dominant
4 – Subdominant
3 – Mediant
2 – Supertonic
1 – Tonic

* When 7 is a whole step below tonic in natural minor or
  descending melodic minor, it is called Subtonic.

X2 — the two is a superscript

B3 — the three is a subscript
Scale Degrees — an excellent explanation at musictheory.net

Drills:
1 – Tango.
7 – Let’s
6 – So
5 – Difference,
4 – Such a
3 – Makes
2 – Sunshine
1 – The