Thanks for the info (re Kodaly in a nutshell). I went to google and looked at
http://home.earthlink.net/~debrajet/Kodaly.html which gave an overview. So it's basic music theory taught through singing, using tonic sol-fah.
I've found in teaching sight singing that using number 1 to 7 rather than adding new names of 'doh' etc. works fine, and relates more to other aspects of music theory (such as chords, position of semitones in scales) that they have learnt or will learn later.
However, by whatever method, learning the character of each note of the major and minor scales is invaluable.
Now, here's another bit of often missed music theory - even in top level harmony books. The chords in a key (major or minor) - there are 7 of course, on the seven notes of the scale. BUT how many people are taught to recognize that the three major and the three minor chords are related and similar in function in music (in pairs)? That is, for example in the major, there are chords 1,4 and 5 which are major (tonic, subdominant and dominant) - but the three minor chords are not just three other random chords (2, 3 and 6) which have functions of their own (i.e. 6 to learn, plus chord 7) - rather, the three minor chords are each related in function to their relative majors (6 to 1 = Am to C - "home" type / 3 to 5 = Em to G - "tension at the dominant so wants to resolve" type / 2 to 4 = Dm to F - "part way between home and dominant" type). Proof of the pudding is that in music you'll often find that (particularly when composing) if you want an alternative chord to the one you are writing, try its relative major/minor. This was such a simplifying thing to me when I first learnt it, so that harmonizing Bach Chorales etc. became SO much easier. Also, the chord 7 is Dominant in function, i.e. it's like chord 5 - the notes of the diminished chord (B,D,F in C major) are the top three notes of a Dominant 7th chord (which has G as its root).
All this reduced harmony in many ways to:
T and Tr............Tonic and Tonic relative ( C and Am if in C major)
S and Sr............Subdominant and Subdominant relative ( F and Dm)
D and Dr............Dominant and Dominant relative (G and Em, and Bdim is related too)
Basically the same applies for the minor - but Am is Tonic, and C is Tonic relative, and there are some added factors, like chord 5 can be major or minor.
Hope that is useful in organizing harmony for others too. I've heard the system called FUNCTIONAL HARMONY. I'll put some of this as a new thread in case there's more interest in seeing this.