Books in the I Used to Know That ... series

Information is broken down into manageable bite-sized chunks, refreshing your memory of all those things you once knew but have forgotten, and filling you in on the bits that the school syllabus didn't include. From building the pyramids in Egypt to the fall of the Berlin Wall, everything you used to know - and much that you didn't - is here.

I Think, Therefore I Am is the ideal way to take the fear out of philosophy. Written in an accessible and entertaining style,I Think, Therefore I Am explains how and why philosophy began, and how the ways in which we live, learn, argue, vote and even spend our money have their origins in philosophical thought.

How on earth did 'with bells on' come to express enthusiasm? And what do chips on shoulders have to do with inferiority complexes? Spilling the Beans on the Cat's Pyjamas provides us with the meanings of these well-worn and much-loved phrases by putting these linguistic quirks in context, and explaining how and why they were first used.

The go-to guide for grammar, My Grammar and I offers amusing examples of awful grammar, while steering you in the direction of grammatical greatness. Refreshing everything you should have learnt at school and more, My Grammar and I is informative yet entertaining - an ideal buy for any English language enthusiast.

A light-hearted and informative reminder of all the things that we learnt in school but have forgotten, this book features hundreds of important snippets of wisdom, facts, theories, equations, phrases, rules and sayings. It covers English Language and Literature, Mathematics, Biology, Chemistry, Physics, History, Geography and General Studies.

The English language is jam-packed with wonderful verses that we've all heard at some point, but probably forgotten. I Wandered Lonely As a Cloud helps us remember all those long-forgotten poems that we were taught at school, together with short biographies of the poets and introductions to the poems themselves.

Featuring tales of murder, adultery, beheadings, civil war, usurpation and madness, Divorced, Beheaded, Died... takes you on a gallop through the history of all of England's kings and queens, plus some of the less well-known Scots and Welsh rulers, presented in an accessible, chronological format.

Relearn the essential rules of the English language, from grammar and punctuation to sentence construction, and improve your spelling and vocabulary. This is an accessible yet fun way to revisit the English language while enjoying a walk down memory lane - and remembering the stuff you really shouldn't have forgotten...

From mythology, religion and maths to science, fiction and language, this entertaining and accessible guide uncovers the lore and intriguing information behind the numbers that shape our world.

A fascinating look at the meanings and origins of the many colourful foreign phrases we use every day.