Archive for March 30, 2011

MJ4MF Review

I was delighted to open the April issue of the Mathematics Teacher journal and discover a review of Math Jokes 4 Mathy Folks. Reviewer Leah Evans had some nice things to say:

Math Jokes 4 Mathy Folks is a delightful read. The author has compiled a vast array of puns, quips, and jokes meant for people of varied ages and mathematical expertise.


I highly recommend this book as a diversion from the rigor of mathematics. It allows us to have a good laugh (or a long groan) at a joke that only “math nerds” would get, and it points out that humor can be found in all mathematical applications, even a telescoping series.

I love the cliffhanger at the end! The reference to a “telescoping series” is — I think — in regards to this joke (p. 89):

Telescoping Series

If you’re interested, here’s a copy of the entire review. (Click on the image to view a full-size version.)

MJ4MF Review - Mathematics Teacher

March 30, 2011 at 4:01 pm Leave a comment

Lead by Counterexample

A wonderful, handwritten sign hangs on the door to my friend’s office:

There is no way of falsifying, “Unicorns exist.”


This is a good example of the nature of mathematics. Although providing just one counterexample is proof that something is not true, the inability to provide a counterexample is not proof that something is true. Understanding this concept is fundamental to understanding mathematics. Perhaps this guy could use a refresher…

At a conference, a mathematician proves a theorem. A young woman in the audience interrupts him. “Excuse me, sir, but I believe that your proof must be wrong. I have found a counterexample to your theorem.”

“Not a problem,” the speaker replies. “I have another proof.”

March 30, 2011 at 3:03 pm Leave a comment

About MJ4MF

The Math Jokes 4 Mathy Folks blog is an online extension to the book Math Jokes 4 Mathy Folks. The blog contains jokes submitted by readers, new jokes discovered by the author, details about speaking appearances and workshops, and other random bits of information that might be interesting to the strange folks who like math jokes.

MJ4MF (offline version)

Math Jokes 4 Mathy Folks is available from Amazon, Borders, Barnes & Noble, NCTM, Robert D. Reed Publishers, and other purveyors of exceptional literature.

Past Posts

March 2011

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