Here is a phenomenal lesson, accessible to any child who knows how to subtract, and compelling to everyone, up to and including professional mathematicians. Get a kid engaged in it, and they’ll do hundreds of subtraction problems without [...]
A friend just sent me a video of Tony Orrico, whose Penwald series seems to be gaining some steam in certain art/dance circles. Here’s a sample: Essentially, we have an artist [...]
Reading the opinions and rants of various math curricula, I see how hard it can be to evaluate the strengths and weaknesses of a given math textbook. Is Saxon better than Everyday Math? What’s the best intervention for pre-K? When [...]
Katherine and I recently got into a big discussion with our friend Peter, who makes low cost, super-efficient wood stoves for use in the developing world (check out Burn Labs for [...]
Here’s a very clever April Fool’s video on imaginary numbers (and an imaginary teacher), sent to me by a friend. Enjoy!
If you read about the amazing gift of the (now consumed) Sierpinskitaschen last week, you would rightly assume that our present karma had about played itself out. Not so! On [...]
What is it? Delicious. Our friend and food blogger Debs Gardner made us a hamantaschen in the shape of Sierpinski’s triangle. Now in addition to being generated by recursive [...]
Dan and I have been co-teaching a couple classes at the Robinson Center this quarter: Zeno: Fractions within fractions for 4th and 5th graders, and Turtles All The Way Down for 8th through 12th graders. One of the areas of emphasis in our [...]
Here’s why you need to go to the monthly math hour at the UW this spring: My thesis advisor, Sandor Kovacs, is giving the first talk (March 13). It’s on the sixth dimension. Need I say more? I’m giving the second talk (April 17). [...]
Our first 1 minute math video. Pass it along if you know anyone who’d like it. Should we make more? Any topics you’d like to see?
I recently gave a lunchtime talk at a MathCounts competition, aimed at 6-9th graders, and I propped up my camera to take a low tech recording of the thing. The talk went quite [...]
I just got it last evening, and I’ve got to say, Family Math is almost perfect. Their advice to parents: dead on. Like, “Let [your children] see you enjoying the [...]
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