Well, first you can teach your students the musical alphabet. Then the notes. And than the different tones. This is a song to help teach your children to remember the tones:
Do (doe), a deer, a female deer,
Re (ray), a drop of golden sun....
Me, a name, I call myself,
Fa (far), a long long way to run!
So (sow), a needle and some thread!
La, a note to follow so!
Ti (tea), a drink with jam and bread!
That will bring us back to do so do do.