From Rubik's cubes to Godel's incompleteness theorem, everything mathematical explained, with colour illustrations, in half a minute. Maths is enjoying a resurgence in popularity. So how can you avoid being the only dinner guest who has no idea who Fermat was, or what he proved? The more you know about Maths, the less of a science it becomes. 30 Second Maths takes the top 50 most engaging mathematical theories, and explains them to the general reader in half a minute, using nothing more than two pages, 200 words and one picture. Read at your own pace, and discover that maths can be more fascinating than you ever imagined.

From Rubik's cubes to Godel's incompleteness theorem, everything mathematical explained, with colour illustrations, in half a minute. Maths is enjoying a resurgence in popularity. So how can you avoid being the only dinner guest who has no idea who Fermat was, or what he proved? The more you know about Maths, the less of a science it becomes. 30 Second Maths takes the top 50 most engaging mathematical theories, and explains them to the general reader in half a minute, using nothing more than two pages, 200 words and one picture. Read at your own pace, and discover that maths can be more fascinating than you ever imagined.

What is math? Why do we need it? Can birds count? What is the biggest number? Math in 30 Seconds answers these and other questions across 30 awesome topics. Each topic is presented in a concise, 30-second summary, supported by a 3-second flash soundbite, and full-color artwork. Fun, active elements for kids to make-and-do support the topics, encouraging them to test, explore, and discover more. With fast facts, mini missions, and engaging artwork, this book is an exciting introduction to the amazing world of math.

Perfect for anyone young or old looking to sharpen their mental math skills, these fast and fun puzzles are designed to rejuvenate and stimulate the mind. A range of difficulty levels--from beginner to advanced--are included, making this a suitable collection for all ages and abilities. With puzzles that include simple addition and substraction as well as more challenging problems involving percentages, fractions, and square roots, these are the ultimate brain-training tools for people on the go and anyone who wants to expand their mental agility.

A full-colour illustrated tour through philosophy's most famous – and most mind-bending – ideas I Think Therefore I Am, Existentialism, Dialectical Materialism? The Socratic Method and Deconstruction? Sure, you know what they all mean. That is, you've certainly heard of them. But do you know enough about them to join a dinner party debate or dazzle the bar with your knowledge? 30-SECOND PHILOSOPHIES takes a revolutionary approach to getting a grip on the 50 most significant schools of philosophy. The book challenges leading thinkers to quit fretting about the meaning of meaning for a while and explain the most complex philosophical ideas – using nothing more than two pages, 300 words, and a metaphorical image. Here, in one unique volume, you have the chance to pick the potted brains of our leading philosophers and understand complex concepts such as Kant's Categorical Imperative without ending up in a darkened room with an ice pack on your head.

30-Second Numbers highlights 50 key topics for understanding numbers and how we use them, each explained in half a minute.