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Happy post-Thanksgiving! To all Seattlites looking for a math-rich event for kids, we’ve finally got some Math Salons on the calendar, starting in January. [...]

One of my students yesterday shared an idea with me that he had kicking around in his head for a while, which he called continued multiplication. Essentially, [...]

Two problems have been floating around in my head lately, and it’s only fair to share them, and let you know where I got them. Imagine this: You have four [...]

[See Squares of Differences I and Squares of Differences II, and apologies for the tardiness of the posting] I’ve learned a lot about Squares of Difference [...]