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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Ἅρειος Ποτῆρ καὶ ἡ τοῦ Φιλοσόφου Λίθος
No cheating now: Based on the Greek letters that you’ve learned from math and science, can you figure out what the title of this post says? If you can’t figure out any complete words, try sounding them out. There are… Read More ›
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Because Language
Just over a year ago, I published a blog post in which I added Talk the Talk to my short list of favorite linguistics podcasts. The bad news is that Talk the Talk is no more. The good news is… Read More ›
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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 ›
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A Moroccan teen blogs about linguistics (and other matters…).
How many Americans know that Morocco is in Africa? Probably not very many. I’m guessing 4%. And half of those know Morocco’s location only because they’ve seen the world’s best movie (Casablanca, of course) and have paid attention to the geography…. Read More ›
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Apparently I was unclear…
Apparently I was unclear In yesterday’s post. In no way was I advocating getting rid of trig as a unit in regular high-school math, as some readers apparently thought. I wouldn’t do that; whenever I taught precalc, which I did… Read More ›
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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 ›
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Another walk in the neighborhood
It was such a nice day that I just had to take a good walk, this time in the sub-neighborhood next to mine: Ashmont Hill, a diverse place with the slogan “the way city living should be.” Whatever you think… Read More ›
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A high-school student from Lincoln creates a significant linguistic theory.
Once upon a time you were probably learning Spanish, French, Italian, or Latin. (If you weren’t, keep reading anyway.) You probably had to learn hundreds of verb forms in your chosen language, if it was one of those. Not so if… Read More ›
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Culling the herd (the herd of books, that is)
There’s no such thing as too many books. Well, maybe there is. I wrote about this problem in a blog post five months ago — at this point it feels like five years, of course — when I resolved to do something… Read More ›
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Tavolo again
How excessive! Takeout two nights in a row! But desperate times call for desperate measures, as Hippocrates (supposedly) said. So Barbara and I got delicious takeout from Tavolo last night: stuffed quahogs, margherita pizza, tagliatelle bolognese, flourless chocolate cake —… Read More ›
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Kapow!
Unusually delicious takeout last night from Kapow (actually styled “Kapow!”) in Lower Mills, Dorchester: Tom Yum soup, chicken wings, excited eggplant (!), steamed gyoza, udon garlic noodle with duck, and shrimp pad Thai — more than enough for both Barbara… Read More ›
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Your brother-in-law’s mother’s sister is your _________________?
Fill in the blank in the title — but no need to do it in Latin, as in the figure. English will be fine. What? You can’t do it? You say English doesn’t have a word for that relationship? You… Read More ›
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My diverse neighborhood: everybody counts!
As I was taking my walk today, I came across this multilingual sign at the corner of Dot Ave and Park Street. Can you identify all five languages? Remember to fill out your census forms! In order to count, you… Read More ›
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What are your favorite poems?
What are your favorite poems? Is an epic poem too long to count as an answer to this question? I hope not — but I’ll play it safe and split the difference. My favorite pair of poems are… drumroll, please…… Read More ›
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Read it on the internet (if you can)!
“So many boxes to be found on the internet!” I’m guessing that you’ve seen something like this, perhaps in Facebook, Twitter, email, etc. Right? And perhaps you know that the boxes represent characters in fonts that you don’t have on… Read More ›
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Freedom City
So Donald Trump dies from an apparent heart attack after taking hydroxychloroquine, and President Pence calls on far-right militias to enforce a “Make America Great Again” fascist-style government. OK, it’s fiction. More or less. My opening sentence is not quite… Read More ›
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What’s wrong with Advanced Placement tests?
Three cheers for the College Board! Right? Everyone loves AP tests. Well, maybe you do, maybe you don’t, but read on. You might be surprised. Although Jonathan Halabi, a New York City math teacher, occasionally gets too much into the… Read More ›
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The Mechanic
I should have known. Months ago, back on May 4th — OK, OK, I know that it was really just two weeks ago, but it feels like months — I was watching Greater Boston on Channel 2, as one does, and Jim Braude was… Read More ›
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Does William fit?
“William, you don’t fit in that box.” “Yes I do.”
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Do you know the hidden rules of conversation?
“Can you pass the salt?” “Yes, I can.” And then of course he doesn’t. This is an easy example of violating the hidden rules of conversation as described by philosopher Paul Grice. The rules are commonly known as the Gricean… Read More ›
Learning Strategies 