We’ve argued for a long time that the real experience of mathematics is inextricably tied to play. But if you’re a parent or teacher, you’ve seen kids play in [...]
Back in 2006, I had the chance to see Jonathan Kozol when he visited Seattle touring his new book, The Shame of the Nation. The country, he said, had more educational racial [...]
We’re just finishing up a massive project of creating a supplementary curriculum for Seattle’s Summer School program. We realized that the spirit of the lessons was even more important than the content. To this end, we designed the [...]
From the May 18 New Yorker article World Without End, by Raffi Khatchadourian:
We hold these truths to be self-evident, that kids need to move around, and creating opportunities to move during math class can pay off in spades. Therefore, we have a collection of some of our favorite math/movement quick activities to [...]
I just rewrote our write up of Counting Collections, and reclassified it on our Lessons page as a Foundational Activity. The reclassification was motivated in part by a [...]
I almost missed the Cheryl’s Birthday Party internet phenomenon this week. An awkwardly written logic problem went viral, and the internet was abuzz with attempts to solve it. [...]
I recently wrote a piece for the New York Times Numberplay blog on what we do to help people fall in love with math. I thought I’d include it here. No matter whom we work with, our initial goal is for them to have an authentic, [...]
Recently, in an art gallery in Ballard, I saw the amazing painting above. (Check out the artist’s website here.) I love this kind of mathematical art–the tessellation in [...]
I just saw an absolutely charming problem on Numberphile that I was shocked never to have seen before. They call it the Three Square Problem (featuring Professor Zvezdelina [...]
As students are enrolling in pre-algebra and algebra in droves, I thought I would post this video, which is part 1 of a magic trick illustrating the mind-boggling power of [...]
If you are in Seattle or Bellevue, we have a host of great classes and circles to offer this fall, all focusing on the beauty, power, and elegance of mathematics. Saturday Classes at the PNA in Phinney Ridge This Saturday session runs [...]
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