Recent Posts - page 128

  • A college perspective

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    Check out two fascinating posts — one yesterday, one today — from the pseudonymous Rudbeckia Hirta. Both of them lament the state of mathematical knowledge of college freshmen and ask what we high-school teachers are teaching them. Of course her… Read More ›

  • PopCo

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    Popco, by Scarlett Thomas. I’m a perfect audience for this book, but I’m obviously not the intended audience for Allison Block, the ALA reviewer on Amazon.com: Mathematical puzzles. Mind-bending codes. A secret manuscript. And a cake recipe, too. Thomas’ latest… Read More ›

  • The value of projects

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    Are projects valuable for students in a high-school math class? I suppose the answer must inevitably be, “Sometimes they are, sometimes they aren’t.” OK, so we need to shift the terms of the question. We should ask, What kinds of… Read More ›

  • Differentiated instruction

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    In this age of No Child Left Untested, our primary goal is apparently a 100% passing rate on standardized tests. But at least there’s a recognition by The Powers That Be that people learn in different ways and at different… Read More ›

  • How people get to this page

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    It’s a bit puzzling to see how various readers found their way to this blog. Looking at the referrers, I wonder at some of the searches. Here are a few examples: Google: rachel, bartlett, chicago   Google: venn, diagram, about, bubonic,… Read More ›

  • God had a deadline

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    For the second time this year I came across a link to “The Eternal Flame,” a song that speaks to those of us who believe in the power, efficiency, and mathematical insight offered by the Lisp/Scheme/Logo family of computer programming… Read More ›

  • Should we use textbooks?

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    Almost all math teachers (and 63% of teachers of other subjects as well*) distribute textbooks in our courses at the beginning of September. But then four different styles emerge: Some teachers go through the textbook chapter by chapter — in… Read More ›

  • An unsolicited testimonial

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    I love my new Neoprene laptop case. It’s soft, it’s extremely lightweight, and it opens up in such a way that it’s remarkably easy to keep the case on while using the computer. What more can I say?

  • Stopping to ask directions

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    An activity in one of my Saturday Course classes this morning was a crypto treasure hunt. Each group of three fifth-graders had to decrypt a cryptogram, leading to a somewhat mystifying plaintext, which in turn took them to a location… Read More ›

  • Killing five birds with one stone

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    At a recent Math Department meeting, we discussed the question of whether we should offer more math electives. Currently the only non-AP electives that Weston offers are two one-semester Comp Sci courses, but we’re a small high school and probably… Read More ›

  • The T Word

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    Why is it politically incorrect to point out that mathematical talent is one of the necessary components of doing well in high-level math courses? No one would expect that just any random kid could make the varsity football team. We… Read More ›

  • Does the school day start too early?

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    Tracy Jan’s article in yesterday’s Boston Globe indirectly quotes Brighton High School basketball coach: To boost attendance, alertness, and academic achievement, Mahoney said, high schools should start later. High schools around the Bay State are considering the idea because federal… Read More ›

  • Disappearing statistics

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    A wire-service article appeared yesterday on the Boston Globe’s website, boston.com, but now the article has mysteriously disappeared. Fortunately most of it is still available elsewhere, so we can examine its questionable use of statistics. It begins by reporting some… Read More ›

  • Not yet reading

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    Yesterday we held our regular first-Wednesday-of-the-month professional development activity. This time it was a planning session for an event three months hence — a day based on Tracy Kidder’s latest book, Mountains Beyond Mountains. (This book comes with two slightly… Read More ›

  • Logs

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    Why are logarithms so difficult? Algebra students who are consistently competent in other topics often stumble when they get to logs. Sure, they can memorize an algorithm for switching from exponential form to logarithmic form and vice versa, and most… Read More ›

  • An invitation from Tufts Health Plan

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    The form letter begins as follows: Dear Rosalita Davidson, Do you have a plan for retirement? Remember, there’s more to consider than the size of your pension or 401(K). There’s also your health insurance. Medicare is important. But it may… Read More ›

  • We so-called experts have been wrong for almost 7 years

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    Those of us who teach math and computer science have been proud of our knowledge that a kilobyte is really 1024 bytes, not 1000. So “Y2K” doesn’t really refer to 2000 but to 2048. Similarly, we believe (and teach) that… Read More ›

  • Pythagorean Theorem in so-called real life

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    Reading this case might prove helpful for some students who think that math is useless in real life (at least those who plan to be lawyers or drug dealers). But shouldn’t the court have used Taxicab Geometry for its distance… Read More ›

  • Irrationality considered harmful

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    “I refuse to deal with irrational numbers until they’ve calmed down,” says one Jeff Schult, who claims that math is a cult. Read the whole article. I hope it doesn’t represent what Weston students think about math. We shouldn’t use… Read More ›

  • Should honors classes be open to all?

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    At least on political grounds, it’s tempting to argue that honors and AP classes ought to be open to all who wish to enroll in them. It’s also tempting to argue it on educational grounds. We believe in giving everyone… Read More ›