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 math has taught him
Sam Hughes is the author of the Venn Diagram cited in my previous post. I also recommend his list of “Things mathematics has taught me”: That there are such things as unanswerable questions — indeed, provably unanswerable questions That Occam’s… Read More ›
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Don’t confuse England with Britain
Perhaps a Venn Diagram would help.
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Statistics for kids
Do check out the NCES Students’ Classroom site. Good stuff — even though a lot of it is in Comic Sans (see yesterday’s post).
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Ban Comic Sans!
In a column in this week’s Boston Phoenix, Mike Miliard reports on the worldwide campaign by Dave and Holly Combs to ban the Comic Sans font: …It’s Comic Sans, the goofy, ungainly typeface, meant to mimic handwriting that’s somehow proliferated… Read More ›
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Another gender difference?
My impression is that there are significantly more female teen bloggers than male ones, but maybe I’m wrong. A fascinating study by David Huffaker says that “BlogCensus randomly sampled 490,000 blogs to find 40% male and 36% female, with the… Read More ›
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Homework considered harmful
Homework can be counterproductive, according to an article on the physorg.com website. Here are a few excerpts: Instead of improving educational achievement in countries around the world, increases in homework may actually undercut teaching effectiveness and worsen disparities in student… Read More ›
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Building learning communities
A conference on Building Learning Communities — right here in Weston! I don’t know much about it, but it’s led by Wellesley’s distinguished former tech coordinator, Alan November, and the blurb looks interesting. Stay tuned for more info…
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Chris Lydon redux
Yesterday Christopher Lydon returned to NPR with his new show/blog called Open Source. Day #2 concluded a few minutes ago. Actually, of course, it was only the broadcast portion that concluded a few minutes ago. The Internet portion — the… Read More ›
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An argument from continuity
Two sophomores approached my colleague Josh with a question: “How can we construct a fair 5-sided die?” Josh posed a prior question: Is it even possible to construct such a die? He fashioned an interesting argument from continuity: Consider two… Read More ›
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Intel, security, and Apple
Paul Otellini, the new CEO of Intel, says that he “spends an hour a weekend removing spyware from his daughter’s computer,” according to a Wall Street Journal article about its recent All Things Digital conference. When asked whether a computer… Read More ›
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The new SAT
An interesting column by Mark Franek concerning the writing section of the new SAT includes the following observation: The writing section is entirely new — 70 percent of it is composed of pesky multiple-choice grammatical questions (where students aren’t writing… Read More ›
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The view from college math
Rudbeckia Hirta (a clever pseudonym for a math professor who carefully keeps her true identity hidden) observes: Due to reasons beyond my understanding, high school math and college math are completely unaligned. The K-12 system sends us students whose knowledge… Read More ›
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William of Orange
The newest member of our family: William of Orange
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Where visuals fail
Some of us couldn’t possibly forget the 1969 draft lottery, the new and supposedly “fair” system to pick who was going to be sent to Vietnam. My Algebra 2 class is studying probability and was remarkably interested in learning about… Read More ›
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Don’t do this
From this morning’s Boston Globe: A public school teacher fed up with his students’ behavior found a way to berate them in the context of a class assignment. The Jefferson Parish teacher wrote and distributed a two-page essay to his… Read More ›
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Do department names matter?
As in most high schools, computer science courses at Weston High School are taught under the aegis of the Math Department. (One of the first exceptions to this rule was Lincoln-Sudbury Regional High School, where we spun off a separate… Read More ›
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High-school math in the 21st century?
What math applications are taught in high school? Principally parabolic arches and widget-manufacturing, of course. This is a bit of an exaggeration, but the principle holds. We teach applications like those rather than cryptography and models of voting. At the… Read More ›
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Martin Gardner for pennies
The Mathematical Association of America is selling a CD containing 15 Martin Gardner books (the entire collection of his Scientific American columns) for a mere $55.95 — or $44.95 if you’re a member!
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Where are the girls?
Why do so few girls sign up for computer programming courses in high school? High school may be too late. The problem might be starting much earlier. Even in fourth grade at The Saturday Course (see my post on 5/21),… Read More ›
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Math license plates
Winners and other entries in the Math License Plate contest.