# Space-Pi!

Pi is for planets, and spacecraft, for orbital dynamics and craters. It's 3.14, and it's all about circles.

# How to be a winner by being a nontransitive loser!

There are a set of special dice, called Efron's Dice. Each die will win over the last. And it will keep going until there's an ultimate winner - which will lose to the original loser. There's a lesson, there, that frustrates many sports fans. Here's how to snatch victory from the jaws (or even the stomach) of defeat.

# The time President James Garfield wrote a mathematical proof

So, now that we've reviewed which U.S. presidents in history did the most to advance science, let's turn our attention to which presidents have done the most for math — and the time U.S. president James Garfield wrote a proof for the Pythagorean Theorem.

# Why you don't ask five different math experts to split a check

A mathematician, a physicist, an economist, a computer scientist, and an engineer try to split a check. If that sounds like the setup to a joke, that's because it is—a wonderfully nerdy joke from Ben Orlin's Math with Bad Drawings.