What is pi?

In math class, we're handed numbers and told to use them — but rarely told where they came from. We memorise formulas like C = 2πr without any sense of why that works. And rote memorisation, as we all know, kind of sucks.

So. What is pi?

Take a circle. Find its radius — the distance from the center to the edge. Now imagine picking up that length and laying it along the outside of the circle, end over end, counting how many times it fits before you've gone all the way around.

It goes around a little more than 6 times. Specifically, about 6.28.

Here's the thing: the π we all memorized — 3.14 — is half of that. It's half the number of radii in a full circumference. That's it. That's the whole secret.

Wouldn't it have been nice if someone had just... shown us that in 4th grade?

✨ ❄ 🌲 Audrey 🌲 ❄ ✨

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