A few days ago I wrote about Isaac Asimov in his role as a popularizer of math and science. Today I will turn to another important popularizer, Martin Gardner. But first I return to make a few more remarks about… Read More ›
Math
Popularizers I: Asimov on Numbers
Many popularizers are unjustly looked down upon by professional academic scientists and mathematicians. I learned about that as an early age, and I also learned to reject those snobby attitudes. That’s mostly because of my dad’s influence: even though he… Read More ›
On not playing poker
Can a psychology Ph.D. who has never played poker before become a championship poker pro? Apparently so! Maria Konnikova has been making the rounds, promoting her new book, The Biggest Bluff. I heard her on NPR and on Freakonomics, but you might… Read More ›
Stories are sticky. Statistics, not so much.
Last month I was listening to a Freakonomics episode that really stuck with me. That’s what it was about. Stickiness. As teachers, we would like our lessons to be sticky. As citizens, we would like certain political messages to be… Read More ›
Pablo Diego José Francisco de Paula Juan Nepomuceno María de los Remedios Cipriano de la Santísima Trinidad Ruiz y Picasso
Two or three weeks ago I wrote a piece about the complications of Hispanic surnames. Despite the complications, there is definitely something appealing about taking your surname from both parents, not just from the father. The problem, of course, comes… Read More ›
Stuck in the past
You say you didn’t learn cryptography in high school or college? And you didn’t learn it on your own, as some of us did? It isn’t too late! In that case you’ve probably never heard of the Vigenère Cipher, so… Read More ›
The Just City: science fiction and Plato
I am overwhelmed! By unanimous consent, Jo Walton’s The Just City has now been added to my top-ten books list (which already had 12 books on it). There was no doubt about it. In a sense, this book is science fiction…. Read More ›
English history, fractals, and Donald Trump
The Fractal Geometry of Nature may be Benoit Mandelbrot’s most famous book, but have you ever heard of the fractal geometry of history? I hadn’t either — until I watched the six-minute video “The Abandoned Hill with Two Members of… Read More ›
How many books have you read this year?
According to Pew, the average adult reads — wait! median adult or mean adult?— OK, the median adult reads 12 books per year, whereas the mean is only 4. Ponder that discrepancy for a minute! We all know — though… Read More ›
I survived my first week of Zoom-based teaching.
Today, on July 3, I am telling you that I survived my first week. Not my first week of teaching, of course: what I survived was my first week of teaching with Zoom — although sometimes it did feel like… Read More ›
On the other hand… Gödel (but not Escher or Bach)
In my previous blog post, I wrote about — and included a cartoon about — one aspect of math teaching. The cartoon asserted that “no one can impart perfect universal truths to their students,” with the punch line “…except math… Read More ›
Sanity through math
Why is Jonathan Halabi called “Mr. D.”? I mean, it’s an excellent way to refer to a math teacher — isn’t it? — but I’m puzzled by “D” as the abbreviation for Halibi. Oh well, who am I to object?… Read More ›
Beautiful trigonometry
You would be forgiven if you had the misimpression that I don’t like trigonometry, because I hadn’t been clear, as I pointed out the very next day. I definitely do like trig. In fact, I love trig! To see one… Read More ›
The Mathematics of COVID-19
As you know from my recent post, my colleague Joyce and I will be co-teaching a short unit on the mathematics of COVID-19 this summer. But what topics should it include, and in what order, and how will students learn… Read More ›
How about replacing trig? But with what?
“You can’t get rid of trig! It’s my favorite unit!” Said no one ever. Well, that’s not quite true. Some of us quite like trig, at least if it’s approached as a set of functions rather than ratios in right… Read More ›
The cats know what to do!
William, Flicka, and Vincent — as you can see — were observing proper social distancing as they lined up six feet apart, waiting patiently for their dinner last night. (BTW, William isn’t quite as large as the perspective makes him… Read More ›
Math and cats
(This is a follow-up to yesterday’s post. I suggest reading it first, if you haven’t done so already.) A quote from John Horton Conway in today’s MathBlab: You know, people think mathematics is complicated. Mathematics is the simple bit. It’s… Read More ›
RIP, John Horton Conway
Very sad news. John Horton Conway, one of the greatest math educators of our generation, has died of COVID-19: John Conway leaves a legacy of the most awe-inspiring mathematical and magical mind-twisters—the Monster group and monstrous moonshine, surreal numbers, Sprouts,… Read More ›
Social distancing: a simple geometry problem
I am told that these signs are appearing around San Francisco — thank you, Doug Marquis! — offering either an open-ended or a traditional problem to give your math students. Pick one: What do you notice? How far is the… Read More ›
What difference could a few zeroes make? Zero is nothing, isn’t it?
Bloomberg spent $500 million on ads. The U.S. population is 327 million. He could have given each American $1 million check and still have money left over. I feel like a $1 million check would be life-changing for most people…. Read More ›
Learning Strategies 