Nonorientable Surface
Road signs for mathematicians: beyond "Slippery Surface," a warning for a nonorientable surface, with a car driving on a Möbius strip.
Transcript
[Sign 1: a skidding car] "Slippery Surface" [Sign 2: a car on a Möbius strip] "Nonorientable Surface"
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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/2021-06-10-nonorientable-surface/ (CC BY-NC 4.0)