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Irish mathematics for St. Patrick’s Day

The plaque commemorating the discovery of quaternions by William Rowan Hamilton. With so many websites celebrating the science of beer on St. Patrick’s Day, I thought I’d focus on something completely...

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Equality, mathematical and practical

Pi for equality. No one can rival a beginning teacher for focusing on details at the expense of the big picture, much to the frequent chagrin of their students. One of my office mates in graduate...

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Talk mathy to me: what’s the square root of i?

A panel from “Saturday Morning Breakfast Cereal”. The comic behind the link is very NSFW and very nerdy, so don’t click if you’re offended by either. [Credit: Zach Weiner]Most people are probably aware...

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Of maps and math and Buckminster Fuller

An “upside-down” world map, placing south at the top. Australians and southern Africans no doubt are asking “what’s wrong with this?” Many maps of our world are familiar enough that if we see one with...

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Don’t fear the math

Printing instructions: click to enlarge. This is designed to fill a US Letter-sized piece of paper. Set the margins as large as your printer can handle, and make sure they’re equal on all edges (e.g....

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Pi Day: the i and the pi

Today is often referred to as “Pi Day”, since in the United States and various other countries, the date March 14 is written as 3/14. Beyond those who write the date 14/3, there are a few who object to...

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Of Möbius strips and Klein bottles

On October 11 and 12, I’ll be helping my friends bring SCIENCE to GeekGirlCon. My contribution: making Möbius strips and Klein bottles out of paper! If you couldn’t make it to GeekGirlCon in Seattle,...

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