Lines Through Points
A student catches the teacher's line missing an invisible 'infinitesimally small' point, so the teacher draws big fat dots instead.
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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/2020-09-02-lines-through-points/ (CC BY-NC 4.0)Transcript
Teacher: "Here we see a line joining two infinitesimally small points." Student: "Actually, you missed the lower one."
Teacher (now with big dots): "Fixed! As I was saying, two infinitesimally small points…"