Well I teach 6 years olds,, so my lesson plan would be something like.
Arpeggiator song - pre teach vocabulary with actions, then sing along
Show flash cards and drill the words of each function
Game - Maybe put the flash cards on the wall, call out the words and you'd throw the ball at the flashcards
Make a picture of an arpeggiator plug in
Break time (Toilet and Water)
Review vocabulary Game - Have the flash cards on the floor, turn over one or two, and you have to say which ones are missing.
Open Sonar......
I'm not sure this is the best approach to be honest, I'd go with Sharks reply