Category Archives: math

Origami-inspired Proof of the Pythagorean Theorem

While working with math teachers Richard Chang and Randi Currier of the Buckingham Browne & Nichols Middle School to come up with problems that use polynomials and rational expressions, we stumbled upon an origami-inspired proof of the Pythagorean theorem that I’d like to … Continue reading

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Girls’ Angle Bulletin, Volume 8, Number 5

The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. Volume 8, Number 5 of the Bulletin kicks off with an interview of Ivana Alexandrova. Ivana is an Assistant Professor of Mathematics at … Continue reading

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Conceptual Solution to 2008 AIME I, Problem 14

Here’s a solution to problem 14 on the 2008 AIME I contest that attempts to avoid computation as much as possible. Sometimes, it’s an amusing exercise to try to solve a contest problem entirely in your head. Doing so often forces … Continue reading

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Snowball Problems Melted

The snow from the record setting snowfalls in Boston are pretty much gone, so here are solutions to the two snowball problems from the February. Solution to Snowball Problem #1. We claim that every point in space on the side … Continue reading

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We’ve Got Snowball Problems

Current weather in New England makes it hard to not think about snow. So here are two snowball inspired math problems. We welcome your solutions (send to girlsangle “at” gmail.com). Perhaps we’ll post solutions when the last traces of snow have … Continue reading

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Happy New Year 2015!

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Girls’ Angle Bulletin, Volume 8, Number 2

The electronic version of the latest issue of the Girls’ Angle Bulletin is now available on our website. After reading Stained Glass Angles in Volume 7, Number 4, Marion Walter happened upon an amazing stained glass window by John Rose at … Continue reading

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