Can't Commute
Text-only riddle: a pun on the non-commutativity of matrix multiplication.
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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/2017-01-17-can-t-commute/ (CC BY-NC 4.0)Transcript
Q: "Why do matrix groups have to work from home?"
A: "Because they can't commute."