Here is another screen capture from the free “Learn Tonic Solfa with GridPlay” software. This grid allows you to play the notes of four major scales on a modulator which is labelled with both letter names and sol-fa syllables:
The various grids included in the software present scales in different inversions for different learning situations. For example, simple songs often use a range from low ‘so’ to the ‘mi’ above the tonic.
Teachers could edit these grids in the parent program, MIDIgrid, to add other keys or ranges.
Below is a PDF file showing both sol-fa symbols (Kodaly) and notation for several major scales: