One activity that helped your little one identify pitch was a game that I call, Solfege Fine Motor Transfer.
In this game, students used pom poms and tweezers to add “notes” to the Solfege scale. As they added the pom poms to the staff, they sung the pitch.
To encourage musicianship, students sung and placed pom poms on a variety of musical intervals, such as Do-Mi-So and Re-Fa.
This enabled them to both recognize and apply their understand of common musical intervals.
We did this, first with the treble clef, and then with the bass clef.
Following this, they played these intervals on their keyboards.