If you've forgotten the capital city of Chile; the basics of osmosis; how to solve a quadratic equation; who wrote the famous poem about daffodils; the use of a conjunction or the number of continents in the world, I Used to Know That is guaranteed to provide all the answers.

Can you remember how photosynthesis works?
What about quadratic equations?
Or the names of all five Bennet sisters in Pride and Prejudice?

This witty and insightful book gathers together all the facts, figures and formulae we only half-remember from school, and is guaranteed to have you exclaiming, ‘I used to know that!’

‘A seven-chapter wonder that covers everything’ - The Scotsman
‘Jolly useful old-school primer . . . Everyone will want to dip into this’ - Tribune magazine

'This is a fascinating book ... it will no doubt be a great source of entertainment around many a dinner table' – She Magazine
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A Sunday Times top-ten title in 2008 and a bestseller ever since, I Used to Know That has continued to delight readers with its pages of forgotten facts from our school days.

I Used to Know That is an ideal and accessible reference guide for adults wanting to brush up on their lost knowledge – or prepare for a pub quiz!

If you've forgotten the capital city of Chile; the basics of osmosis; how to solve a quadratic equation; who wrote the famous poem about daffodils; the use of a conjunction or the number of continents in the world, I Used to Know That is guaranteed to provide all the answers.