Work through encoding π ≈ 3.141592653 with the peg method.

3141592653 → 31 41 59 26 53 → meat, rat, lip, nacho, lamb.

The story: under a giant π, a rat sits on a slab of meat licking its lip — while a woolly lamb nibbles a cheesy nacho.

Chunk the ten digits into pairs and pull each peg:

Now link them: a rat sits on a slab of meat, licking its lip beside a nacho a lamb is nibbling. Replay that scene and you've recovered 3.141592653. (The leading "3." is just π's whole part — everyone remembers that bit.)