I too use interval size to teach note reading. It is a real struggle because the public schools still use acronyms for the lines and spaces. But when a student is strugggling with a song, and I show them how they could read it with step up, skip up, same, step up, etc, and they see how much quicker it is, I usually can convince them.
Dana:
Yes, and I have found that refreshing the concept frequently is very helpful. When I ask them to WRITE the notes (say, a tricky-to-read measure) on our little lap whiteboard, sometimes they say, "Ohhh... I didn't notice that."
This sparkling piano arrangement of the main musical theme from The Snowman will win your students' hearts and imaginations, too, with its soaring beauty!
Moonlight Sonata: How to play this beautiful but difficult piece full of black keys & triplets? With larger-than-usual notes, & letters inside the note heads!