Making some head way towards grade 5... did a a 3 hour sesh with RB on Tuesday based around intervals which made sense after practicing this which is great. No better feeling than getting it! the rile i learned for intervals is.
1/ count the gaps between the notes.
2/ take the root note as if it was the scale. know youirr sharps and flats at this point...
3/ add the accidentals back in. does this make the gap sound bigger, smaller, tighter?
4/ depending on your answer and position youve got a major, minor, dim or augmented chord with whatever position it is in.