The Peg System

That picture has absolutely nothing to do with what this actually is, but what do you want for free, duckie?

“A peg system is a mnemonic technique for memorizing lists. It works by pre-memorizing a list of words that are easy to associate with the numbers they represent(1 to 10, 1-100, 1-1000, etc). Those objects form the “pegs” of the system. Then in the future, to rapidly memorize a list of arbitrary objects, each one is associated with the appropriate peg. Generally, a peglist only has to be memorized one time, and can then be used over and over every time a list of items needs to be memorized.

The peglists are generated from words that are easy to associate with the numbers (or letters). Peg lists created from letters of the alphabet or from rhymes are very simple to learn, but are limited in the number of pegs they can produce. The Major System is often used to create pegs. While it is more complicated to learn than simple rhymes or alphabetic pegs, it is limitless in the number of pegs it can produce.”

- Wikipedia.