Differentiated Learning
An administrator scolds a teacher whose whole class is doing one worksheet, then reveals 'differentiated' meant the calculus kind.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2016-12-12-differentiated-learning/ (CC BY-NC 4.0)Transcript
Administrator: "You're having everyone do the same worksheet? This is supposed to be differentiated learning!"
Teacher: "It is!" Administrator: "With a nonzero derivative!" Teacher: "Oh. Oops."