Math with Bad DrawingsCartoon Archive

Defining Irrational

2015

Three students react to the textbook definition of irrational numbers with confusion, a flood of questions, and fainting.

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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/2015-01-01-defining-irrational/ (CC BY-NC 4.0)
Transcript

[Definition] "An irrational number cannot be expressed as a ratio of integers."

A: "Riddle me not, Sphinx! What do you MEAN?!"

B: "WHAT'S 'IRRATIONAL' WHAT'S 'EXPRESSED' WHAT'S 'INTEGERS' WHAT'S 'CANNOT'"

C: "*gulp* I… uh… *faints*"

Topics
Number & Arithmetic › Irrational NumbersNumber & Arithmetic › Rational NumbersNumber & Arithmetic › IntegersMath Culture › DefinitionsMath Culture › Math Vocabulary
Level
Middle SchoolHigh School
Themes
Student LifeTeachers & ClassroomLiterature & MythLanguage & Wordplay