Math

Why 1 is not prime

At Saturday Course we were working with prime numbers, and one fifth-grader asked his classmates a question: Student A: Is 1 a prime number? Student B: No. Student A: So it’s composite? Student B: No, it isn’t prime and it… Read More ›

Lost in Lexicon

If you regularly see my Facebook status in your News Feed, you may have noticed that it said “I’m lost in Lexicon right now…” on October 17. This status confused some of my students. One of them asked, “How did… Read More ›

Sixteenth in the state

No, Weston teachers do not have the highest salaries in the state. According to today’s Boston Globe, Weston ranks only 16th in the state in average teacher salaries! At $73,338, we can be compared to a high of $79,444 (Old… Read More ›

Mathematician’s Lament

“Mental acuity of any kind comes from solving problems yourself, not from being told how to solve them.” So says Paul Lockhart, and I couldn’t agree more. It’s great having cooperative students who will correctly follow directions in solving problems… Read More ›

Traumatized for life

Some of us can barely remember anything from third grade, but last night at a restaurant in Dorchester I met someone my age who was truly traumatized for life by a single experience way back in third grade. We’ll call… Read More ›

Defining a trapezoid

This is the cue for my students to roll their eyes… Yesterday I got into a heated discussion with another math teacher about an important issue: how to define a trapezoid. He was arguing in favor of the position that… Read More ›

Struggle

At this week’s Math Department meeting, we spent the first 15 minutes or so discussing what we do to help “struggling students” succeed in our courses — particularly what resources we provide. Something was bothering me about the whole discussion,… Read More ›

Before and after

A major topic of high-school math is the study of transformations. My colleague, Jim McLaughlin, wants you to know that his desk has somehow undergone a miraculous transformation: Before After

Math Explorers Club

I don’t know why I never knew about the Cornell Math Explorers Club before now. Its website is a terrific enrichment resource for high-school math students and their teachers, with a wonderful assortment of slightly offbeat topics that are right… Read More ›

The New England Playoffs

No, not football — too late for that. And not basketball — although it’s the right season for that. I’m talking, of course, about the New England Association of Math Leagues Playoffs, which took place today at Canton High School…. Read More ›

Unnecessarily difficult

A few years ago, one of my former students from Honors Precalculus informed me that my course had been “unnecessarily difficult.” An interesting phrase. “What does that mean?” was my puzzled response. Let’s call her Rachel (not her real name)…. Read More ›

The forest or the trees?

I was just thinking about some of the difficulties that many high-school students have when attempting to learn math. Aside from those who face external obstacles — such as brain damage, severe emotional problems, or extremely inadequate teaching — we… Read More ›