Author Archives
In 2018 I semi-retired by retiring from Weston High School after my 21st year teaching mathematics there. This was also my 44th year as a teacher altogether. In 2023 I retired fully, adding in my 18 years at Harvard’s Crimson Summer Academy each summer. For 21 years I had taught at the Saturday Course in Milton, MA, and I used to serve on the board of the Dorchester Historical Society.
I read, cook, and spend a lot of time building my model railroad. For some reason I’m left with less free time than would be ideal, considering that I’m supposed to be retired, but somehow I also manage to devote time to my wife, Barbara, and to our varying number of cats (once up to six, but now sadly down to one).
Larry Davidson
ljd@larrydavidson.com
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What? A model railroad can be a computational device and a musical instrument?!
Surely you’re joking, Mr. Aaronson. I can (just barely) believe the musical instrument claim, but a computational device??? Actually, both claims are true, hard as it is to believe. For the musical instrument, watch this short video and you’ll see… Read More ›
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A Murder of Magpies
An outstanding first novel from Judith Flanders, published seven years ago, A Murder of Magpies is a mystery that will hold your attention and keep you entertained. In a recent post I wrote about another Judith Flanders book, but in… Read More ›
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A new unit of distance?
No, this sign isn’t at a Starbucks:
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They both have samples of my DNA. Why do they disagree about my ancestry?
My ancestry, says ancestry.com, is 100% Ashkenazy Jewish! No, says CRI Genetics, it’s 66.1% Ashkenazy Jewish! So who’s right? It’s always a good idea to ask for a second opinion. I trusted ancestry.com, which is respected and has a well-known… Read More ›
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A supposedly “new” way to solve quadratics
What’s wrong with the Quadratic Formula? Let me count the ways: It’s pure magic to 99% of high-school students, who have no idea why it works. It lends itself to sign errors because of the subtraction under the square root… Read More ›
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An outstanding dinner from Tavolo
Barbara and I had an outstanding dinner tonight from Tavolo, with lots of leftovers: chef’s burrata with basil pesto, prosciutto, grape tomatoes, parmesan & parsley crumb, and vincotto; seafood fregola with shrimp, mussels, tomato broth, and garlic butter; confit duck… Read More ›
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What’s in a (color) name?
Who cares what names Crayola chooses to use for the colors of its crayons? Do you? Do I? There was only one color name that used to bother me when I was a kid: “flesh.” Even then, I guess, I… Read More ›
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Adequate Yearly Progress
If you write a novel about teaching, how realistic should it be? If, in particular, it’s supposed to be a satire, then how realistic should it be? Can you distinguish a satire from reality? Sometimes it’s hard to do that…. Read More ›
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That Day the Rabbi Left Town
Way back in the Before Times—in 1964, when I was still in high school—local author Harry Kemelman wrote Friday the Rabbi Slept Late, thus inaugurating a series of a dozen cozy-style mysteries featuring Rabbi David Small of a Conservative synagogue in Barnard’s… Read More ›
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Feline Philosophy: Cats and the Meaning of Life
Quick: What is the meaning of life? You said 42, right? No, wait a minute—that’s a different book. In Feline Philosophy: Cats and the Meaning of Life, philosopher John Gray explores what cats think about the meaning of life, what… Read More ›
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Have you read Robert Heinlein’s Coventry?
Are you old enough to know the English phrase “sent to Coventry”? According to Merriam-Webster, if you were “sent to Coventry,” you have been ostracized. Although the cover story of the July 1940 issue of Astounding Science Fiction featured a… Read More ›
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Boston in Transit
Boston’s rich history of public transit deserves your attention if you live in, work in, or have visited The Hub. That’s short for “Hub of the Universe,” in case you missed the memo. Boston is nothing if not proud of… Read More ›
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William’s 17th
William is preparing for his upcoming 17th birthday by taking a power nap on his kitty couch to make sure that he remains cute enough.
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The book called The Book—plus a lagniappe: a book about type
Read The Book in hardcover! Not in paperback. Nor on your Kindle. And don’t listen to it as an audiobook! The hardcover is essential. The full title is The Book: A Cover-to-Cover Exploration of the Most Powerful Object of Our Time, as you… Read More ›
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Hwæt?Beowulf? newly translated for your enjoyment
The world is atwitter at the arrival of a new translation of Beowulf by Maria Dahvana Headley. Well, a certain segment of the world, anyway. And you may well wonder why. The idea of reading this epic poem has never appealed to… Read More ›
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“Guess the Language”: quite a challenge!
If you heard a short sample of a language that you didn’t know, could you still guess which language it is? Quite a challenge, no? Well, in this video, you have the opportunity to see Latvian linguist Julie Maksimova face… Read More ›
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Troubled Blood
Robert Galbraith has a secret identity, though you won’t spot him changing in a phone booth. What’s his secret identity? Well, many people know him better by his pseudonym, J.K. Rowling. No, wait! That can’t be right. J.K. Rowling is… Read More ›
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A really important dispute about “OK boomer”
According to a post the other day in All Things Linguistic, it is widely believed that the correct translation of “OK boomer” into Middle Egyptian is whereas they point out that a more accurate translation would of course be Perhaps… Read More ›
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The Font of the Baskervilles
The Hound Font of the Baskervilles? We’ve all learned, particularly in the last few years, to be cautious about believing what we read. Some people (though not nearly enough of us) have even learned to be cautious about what we see… Read More ›
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Pi(e) day: not actually a national holiday!
OK, I tried to release this at precisely 3/14 1:59:26.535897932384. How well did I do? But why would the National Council of Teachers of Mathematics (NCTM) lie to us about Pi Day? This is just too distressing for words: Declared a… Read More ›
Learning Strategies 