Mnemonic comes from the Greek word mnemon which means mindful. Mnemonics today are systems of principles and formulas designed to assist or improve memory or retention of new information. We are all familiar with the phrase "thirty days hath September, April, June and November..." to remember the number of days in the months – that’s a mnemonic. Here are a couple more examples that could be used to help teach language or spelling; if you always have trouble remembering how to spell 'geography', the mnemonic 'George eats old grey rats and paints houses yellow' may be easier to remember, and notice that the first letter of each word spells 'geography'. Or if you forget which one out of 'dessert' and 'desert' is the word used for a sweet food, think of 'strawberry shortcake' which has the letter 'S' twice, as does 'dessert'.