Peano Arithmetic vs. Piano Arithmetic
Peano arithmetic on a number line versus 'piano arithmetic' on a keyboard, where notes combine into chords (or 2 + 2 = 3 because a key is shared).
Use this cartoon
Free for classrooms, worksheets, slides and other non-commercial use under CC BY-NC 4.0, with credit to Ben Orlin.
Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2020-09-16-peano-arithmetic-vs-piano-arithmetic/ (CC BY-NC 4.0)Transcript
[Peano Arithmetic] number line: 2 + 2 = 4
[Piano Arithmetic] keys E + G + C = C Major