Cell Network Coverage
A U.S. map scribbled with thin coverage lines that come close to every point but cover essentially no area.
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/2017-09-19-cell-network-coverage/ (CC BY-NC 4.0)Transcript
[The Ad] "Our mobile network covers every square inch of the country!"
[The Reality] "It's a dense set of measure zero."