The Circle

The Circle is our very own math-literacy magazine for K-12 students. Our mission is to advocate for the world of math, to provide a window into its fascinating history, its distinctive culture, and its many untold stories.

May 2024

February 2024

January 2024

December 2023

November 2023

October 2023

September 2023

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Tinfoil Hats in the Math Community

Christina Liu

We’ve no doubt heard all about conspiracy theorists throughout our lives in all sorts of communities. There must be a mathematical equivalent, right?

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Chip-Firing Games

Eric Yee

Have you ever been at the beach with a handful of sand, sprinkling the tiny grains such that they begin to form a perfect cone? But while you’re admiring this beautifully symmetric creation, a process of destruction inevitably begins to take place...

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No one can discover all of math

Hongning Wang

Just as physicists hope to discover a Theory of Everything today, mathematicians in the 1900s sought to identify a mathematical framework that explains, however tediously, all of mathematics. Unfortunately, mathematician Kurt Gödel’s incompleteness theorems, published in 1931, broke apart this dream, demonstrating that no framework can plausibly explain every mathematical truth.

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A Different Way of Thinking About The Coin Rotation Paradox

Lily Sun (Guest Writer)

In 1982, there was a problem on the SAT that was so difficult that none of the test takers were able to correctly solve it. The problem came to be known as the Coin Rotation Paradox...

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Proof by Story Telling

Lily Sun (Guest Writer)

One day, you randomly decide to write down the first few lines of Pascal’s Triangle.

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Group Theory

William Gvozdjak

Let’s say we have a triangle. What’s more, let’s make all three sides of the triangle have the same length—it’s equilateral. Now, remember how we learned *transformations* ages and ages ago? We’re going to look at the transformations that preserve the triangle.

Before we published The Circle via website, we used to publish via PDF. Here are the old issues: