Basic Classes of Linear Operators

This stunning visual guide explores and explains the defining eras, key moments, and outstanding people that have made history.In the same series as the New Children’s Encyclopedia and DK Visual Encyclopedias of Science, Art, and Geography (among others), this brand new history encyclopedia will help children, parents, and educators grasp the events, personalities, and inventions that have changed the world. From the earliest civilizations in Mesopotamia and India to the rise of populism in the US and China’s growth as a global power, this book gives you the facts about all major historical periods.Illustrated with over 1,500 photographs, artifacts, and maps, History: A Visual Encyclopedia is a way in to understanding the diversity of world history, from the African kingdoms that predated colonialism and the cultures of the pre-Colombian Americas to the dynasties that have ruled China for thousands of years and the many empires that have come and gone over the centuries in Asia and Eur

A stunning picture book about the power of hope.A lonely little kitten wanders into a dull, gray station, full of dull, gray people. Her colorful fur and bright green eyes bring warmth and life to this weary place, and soon people begin to notice the kitten. As she learns about the different travelers and their struggles from loss and loneliness, the little kitten wants to help fill their world with hope and color, too. In this timely and important book, author and illustrator Stephen Hogtun shows young readers the pride and sense of purpose that can come from helping others.

Imagine if you could travel back in time and walk the streets of the past. Where would you go first? Incredible History turns back time to reveal realistic reconstructions of the most incredible locations and exciting moments in history. You’ll feel the roar of the crowd in the Roman Colosseum, walk the ramparts of the Great Wall of China, and ride the first railways. Each story begins with an archaeological site or artifact. You’ll learn when and how it was discovered, and what it teaches us about how the people who lived at the site might have spent their days. Then, you’ll see the location recreated in jaw-dropping 3D detail. Using archaeological evidence, the people and places of the past will be brought back to life before your very eyes. With each page packed with fantastic facts and extraordinary pictures, Incredible History brings together the best parts of history and archaeology to recreate the entire history of the world.

Classic Dutch language course, now revised and updated with a new audio app Learn to speak Dutch in just three months with this practical and comprehensive self-study language course. Whether you're a complete beginner or want to refresh your knowledge, DK's Hugo Dutch in 3 Months will have you speaking Dutch fluently in just 12 weeks. With a fresh new look and an accompanying audio app, the latest edition of this classic self-study course provides all the resources needed to speak, read, and write in Dutch. The 12 weekly chapters contain lessons on the key grammatical structures and present a range of useful vocabulary, along with exercises to reinforce your learning. The essentials of Dutch grammar are clearly explained and tested in conversational exercises, giving you the authentic feel of the language. In addition to a written "imitated pronunciation" guide, which replaces Dutch sounds with English syllables you're already familiar with, the new audio app also allows you to perfec

The diversity and drama of the bird world brought to breathtaking life in an encyclopedic new editionUnrivaled in scope for a single-volume reference work, this photographic guide to every bird order

A cool compendium of extraordinary figures and number-based facts about everything in the world from animals to art.Zillions of fun figures at your fingertips!Are you eager to know all the most incred

Start learning English as a second language with this visually stimulating practice book for children ages 6-9. Accompanying the English for Everyone Junior: Beginner's Course, this beautifully illustrated workbook features an abundance of vocabulary and grammar exercises for children learning English as a foreign language. When it comes to languages, practice really does make perfect! This work book guides young linguistic learners through exercises and activities to consolidate what they've learnt and build confidence in their skills.Making use of a range of both familiar and new exercise mechanisms, this practice book is an invaluable research tool to test the vocabulary and grammar structures taught in the course book. Immerse yourself in this practical ESL learning material, which includes: -Over 1,000 vocabulary and grammar exercises -Lay-flat binding, making the book easier to write in -Extensive accompanying audio resources that can be accessed via the website and the app -The

Start learning English as a second language with this visually stimulating practice book for children ages 6-9. Accompanying the English for Everyone Junior: Beginner's Course, this beautifully illustrated workbook features an abundance of vocabulary and grammar exercises for children learning English as a foreign language. When it comes to languages, practice really does make perfect! This work book guides young linguistic learners through exercises and activities to consolidate what they've learnt and build confidence in their skills.Making use of a range of both familiar and new exercise mechanisms, this practice book is an invaluable research tool to test the vocabulary and grammar structures taught in the course book. Immerse yourself in this practical ESL learning material, which includes: -Over 1,000 vocabulary and grammar exercises -Lay-flat binding, making the book easier to write in -Extensive accompanying audio resources that can be accessed via the website and the app -The

This book explains and explores the essential terms and key concepts in the world of business, finance, and company management. If you're perplexed by profit margins, confused by cash flow, or baffled by balance sheets, all your questions and many more are answered in this indispensable guide. Grasp how companies work, from management to research and development, and sales and marketing to production and distribution. Eye-catching visual aids give a helpful representation of each and every aspect of business, while the complex subject matter is broken down into clear definitions and concise explanations, expressed in easy-to-understand language. Crammed with essential know-how, How Business Works is perfect for anyone looking to boost their business brain or learn the ropes from the ground to the top.

榮獲《紐約時報》年度最佳童書、義大利波隆那書展設計大獎、70 多次國際性大獎的殿堂級繪本作家――艾瑞．卡爾(Eric Carle) 插畫風格好餓的毛毛蟲給孩子的第一本百科書！風靡全球、暢銷超過50年的經典繪本《好餓的毛毛蟲》系列作品，給孩子的十萬個為什麼，滿足他們的好奇心！★沿用殿堂級繪本作家艾瑞．卡爾(Eric Carle) 的充滿魅力的插圖風格。★本書引進自著名英國出版社DK，教育專業知識保證。小孩子求知好問，對萬事萬物都充滿好奇！本書包羅萬有，滿足孩子那求知若渴的心；配以殿堂級繪本作家艾瑞．卡爾(Eric Carle)那充滿童趣的插畫，從而帶動孩子的閱讀動力！在書中，你可以欣賞艾瑞．卡爾拼貼畫風格創作的插圖。翻閱人類數千萬年來的發現和創造。了解宇宙、地球、科技、大自然、人類和歷史的奧秘。發現我們身處世界的各種面貌……還有更多更精彩的內容等待你揭開！本書包括以下七個部分，近百個主題，內容包羅萬有，讓孩子大開眼界：1.我們的世界2.身體與健康 3.地球4.動物與大自然5.歷史6.科學、數學和科技7.太空關於艾瑞．卡爾（Eric Carle）艾瑞．卡爾爺爺是孩子的知音。他留著大鬍子，拿著一枝畫筆，用神奇的拼貼魔法，創造出世界上獨一無二的色彩；他充滿童心，用豐富的想像力和童稚的話語，走進孩子充滿幻想的世界，至今已創作超過70多本色彩繽紛、又充滿想像力的作品。艾瑞．卡爾曾榮獲美國《紐約時報》年度最佳童書、義大利波隆那書展設計大獎，並在英國、法國、日本等地獲得70餘次國際性大獎，近年又獲得美國圖書館協會授予羅拉．英格爾．懷爾特獎，肯定他的作品的藝術性。2002年他成立了「艾瑞．卡爾圖畫書美術館」(The Eric Carle Museum of Picture Book Art)，成為美國第一座圖畫書美術館。

From sporting heroes and inspired goals to defensive strategies and the offside rule, this is the ultimate guide to the world's greatest sport. Visit Planet Soccer - everything you need to know about the clubs, the fans, the rituals, the stats, and the results worldwide is here. Eye-catching step-by-step artworks and jargon-free text profile the roles of players, equipment, team formations, strategies, and individual skills, while maps, quotes, and statistics give you all of the key facts on national teams, famous club sides, and iconic players, as well as the greatest competitions around the world. Published in time for the UEFA Euro 2020, The Soccer Book also reveals the story behind the game - from the history of the sport to the results of tournaments in the 2018-19 season.

Embark on an unforgettable time-travelling journey along one of the world's greatest landmarks: the Great Wall of China. Spanning 2,700 years and over 21,000km (13,000 miles), this beautifully illustrated children's book reveals the fascinating story of the Great Wall and the individuals that helped build it. What started out as a frontier defence against northern tribesmen has, over time, become one of the seven great wonders of the world.Exquisite panoramic illustrations and engaging text bring to life key periods and turning points in the Great Wall's history - from the first defensive forts built in 656 BCE to its painstaking present-day restoration. Cutaway views reveal the interiors of important buildings, and pull-out details introduce fascinating facts and key characters. Children will also love searching for the adventurous time-travelling fox who appears in each of the artworks.Perfect for parents and children to pore over together, The Great Wall Through Time makes a gorgeou

Learn how NOT to believe what you see with this book of eye-popping pop-up visual tricks. From the classic "which dot is bigger?" or "is this line straight?" illusions to the first-ever 3D trick to appear in a book, Optical Illusions is packed with picture puzzles. Every illusion is set up to challenge what you think you see.There are hints and tips of how to approach the illusion, and then an explanation of how it works and why you were fooled (and you will be!). There are also flaps, tabs, and a decoder to test the answers, so you can check whether different-looking colours are actually the same, or if those lines really are wonky. All kinds of visual tricks are featured, including distortion, motion, colour and brightness, ambiguous illusions, impossible objects, hidden images...but the stars of the show are two large interactive illusions - the "thaumatrope" spinner that puts a bird in a cage, and a 3D perspective sculpture. Even though you will build it yourself and know which bit

More than 80 classics retold and explained, from early creation beliefs to classical hero narratives and the recurring theme of the afterlife. Who is the trickster god, Maui? What is the Mead of Poetry and what gift did it bestow on those who drank it? What did Ancient Egyptian mythology say about the Underworld? The latest title in the bestselling Big Ideas series, The Mythology Book answers these questions and more, as it explores the compelling worlds and characters depicted in myths and legends. Delve into each myth and discover the meanings behind these stories, getting to the heart of their significance to different cultures worldwide. More than just stories, myths are testament to the amazing creativity of humans striving to explain and make sense of the world around them. Here you will discover Zeus, god of the sky and ruler of the Olympian gods, Loki, the cunning trickster with a knack for causing havoc, Thor with his mighty hammer, and Hades, ruler of the underworld. Beyond t

Whether it's a symptom you have been ignoring for a while or something like a sudden pain after a fall, this book tells you what it could be and what action to take. Check out any health problem and discover what it might be and what you should do. A series of head-to-toe visual diagnostic guides help you identify suspected conditions or injuries.Once you've narrowed it down, a cross-reference takes you to easy-to-follow descriptions of the condition at the back of the book. Potentially life-threatening situations and ailments that need urgent medical advice are clearly flagged. Fully illustrated throughout, Medical Symptoms Visual Guide is an invaluable reference.

Learn to speak Dutch in just three months with this practical and comprehensive self-study language course. Whether you're a complete beginner or wanting to refresh your knowledge, Hugo: Dutch in Three Months will have you speaking Dutch fluently in just 12 weeks. With a fresh new look and an accompanying audio app, the latest edition of this classic self-study course provides all the resources needed to speak, read, and write in Dutch.The 12 weekly chapters contain lessons on the key grammatical structures and present a range of useful vocabulary, along with exercises to reinforce your learning. The essentials of Dutch grammar are clearly explained and tested in conversational exercises, giving you the authentic feel of the language. In addition to a written "imitated pronunciation" guide, which replaces Dutch sounds with English syllables you're already familiar with, the new audio app also allows you to perfect your pronunciation - at home or on the go.Whether you're learning Dutch

Use your eyes, ears, and imagination to explore your amazing mind and sharpen your wits. Want to paint like a prodigy, experiment like a scientist, or even invent the next new technology? Put your grey matter to the brain-training test and see how you measure up to some of the greatest thinkers in history. Tackle brain-boggling puzzles, games, and optical illusions and discover what makes your brain work: from why you smile to what is going on inside your head and what side of your brain does what.Learn about neurons, how memory works and how to boost your creativity. This book makes a complex subject fun, accessible and exciting, and is perfect for any child, whether they are intent on becoming a genius or just want to have fun with clever activities at home, on a journey or in school.

This easy-to-use RSPB pocket companion to European and British birds is the ideal field guide for novice birdwatchers and experienced birders alike. From frequently seen garden birds to some of the more elusive birds of prey, discover over 300 species of bird found in the UK and Europe with RSPB Pocket Birds of Britain and Europe. Learn all about birds from their calls and feeding behaviour, nesting habits and habitats, and differences in plumage.Crystal clear photographs bring the birds on the page to life, and notes on distinguishing features will help you identify different species of bird wherever you spot them. Maps show where and when you're likely to see each species, further aiding identification. This edition also includes a web link, where you can hear common bird songs and calls to make identification even easier.This handy book is perfectly portable, making RSPB Pocket Birds of Britain and Europe the perfect companion for taking out in the field.

For centuries, human history has been shaped by politics, power, and war - but what about love?Mark Antony's love for Cleopatra led to war between Rome and Egypt; Emperor Xuanzang of Tang relinquished the Mandate of Heaven for Yang Guifei; and the English Reformation was borne out of Henry VIII's passion for Anne Boleyn. Over the centuries since, these great loves - and many others - have been celebrated, recorded, and memorialized to stand alongside the annals of war, peace, and politics that have moulded today's world.Great Loves celebrates history's most famous romances - the joyful, the tragic, and the epic - in one stunning visual guide, showing that, regardless of age, race, gender, or orientation, love has always been a force to be reckoned with.This boldly illustrated title presents a diverse range of stories from around the world, including many relationships that defied the conventions of their day, and features romantic quotes from personal correspondence, poetry, and fictio

Brighten your garden all year round with a wide variety of bulbs. Ideal for first-time gardeners, Grow Bulbs contains everything you need to bring year-round colour into your garden with bulbs. Learn how to plant, care for, and divide your bulbs, create stunning displays including naturalistic drifts and eye-catching containers, and choose from a huge range of bulbs, corms, and tubers with the book's handy seasonal directory.Packed with practical, jargon-free know-how, this easy-to-use guide has everything you need to know to help your garden Grow.

Discover how to keep your garden in the best of health. Ideal for first-time gardeners, Grow Pests & Diseases contains everything you need to know to prevent and treat a wide range of plant pests, diseases, disorders, and more. Far more than a simple list of treatments, this book shows you how to keep plants in top condition, recognise the signs of ill-health, and decide whether or not intervention is needed, while the fully illustrated ailment directory is organised by symptom and plant type for quick and easy identification.Packed with practical, jargon-free know-how, this easy-to-use guide has everything you need to know to help your garden Grow.

Learn to speak German in just three months with this practical and comprehensive self-study language course. Whether you're a complete beginner or wanting to refresh your knowledge, Hugo: German in Three Months will have you speaking German fluently in just 12 weeks. With a fresh new look and an accompanying audio app, the latest edition of this classic self-study course provides all the resources needed to speak, read, and write in German.The 12 weekly chapters contain lessons on the key grammatical structures and present a range of useful vocabulary, along with exercises to reinforce your learning. The essentials of German grammar are clearly explained and tested in conversational exercises, giving you the authentic feel of the language. In addition to a written "imitated pronunciation" guide, which replaces German sounds with English syllables you're already familiar with, the new audio app also allows you to perfect your pronunciation - at home or on the go.Whether you're learning

Learn to speak Portuguese in just three months with this practical and comprehensive self-study language course. Whether you're a complete beginner or wanting to refresh your knowledge, Hugo: Portuguese in Three Months will have you speaking Portuguese fluently in just 12 weeks. With a fresh new look and an accompanying audio app, the latest edition of this classic self-study course provides all the resources needed to speak, read, and write in Portuguese.The 12 weekly chapters contain lessons on the key grammatical structures and present a range of useful vocabulary, along with exercises to reinforce your learning. The essentials of Portuguese grammar are clearly explained and tested in conversational exercises, giving you the authentic feel of the language. In addition to a written "imitated pronunciation" guide, which replaces Portuguese sounds with English syllables you're already familiar with, the new audio app also allows you to perfect your pronunciation - at home or on the go.

Learn to speak Spanish in just three months with this practical and comprehensive self-study language course. Whether you're a complete beginner or wanting to refresh your knowledge, Hugo: Spanish in Three Months will have you speaking Spanish fluently in just 12 weeks. With a fresh new look and an accompanying audio app, the latest edition of this classic self-study course provides all the resources needed to speak, read, and write in Spanish.The 12 weekly chapters contain lessons on the key grammatical structures and present a range of useful vocabulary, along with exercises to reinforce your learning. The essentials of Spanish grammar are clearly explained and tested in conversational exercises, giving you the authentic feel of the language. In addition to a written "imitated pronunciation" guide, which replaces Spanish sounds with English syllables you're already familiar with, the new audio app also allows you to perfect your pronunciation - at home or on the go.Whether you're lea

Who will we meet on the farm today? Have fun spotting clues to the delightful animals, then find them hiding under peek-through flaps. Toddlers will love exploring a farm through the day, and learning all about adult and baby animals in this beautifully illustrated, read-aloud board book. The intriguing cover has a cutaway sun to feel, and inside there large flaps with peek-through holes revealing adorable animals.There are lots more exciting things to spot around the farm on every page, from insects and flowers to a big-wheeled tractor and a scarecrow. The playful, rhyming text encourages little ones to guess who's hiding. And when they lift the big flaps, they find cows in the field, a family of goats playing in their pen, pigs and piglets ready for lunch, chickens in the coop, and more!Flip Flap Find! Farm is a captivating picture book to share.A perfect gift for little animal lovers, it will spark a toddler's curiosity, stimulate their imagination, language, and literacy, and build

Learn to speak French in just three months with this practical and comprehensive self-study language course. Whether you're a complete beginner or wanting to refresh your knowledge, Hugo: French in Three Months will have you speaking French fluently in just 12 weeks. With a fresh new look and an accompanying audio app, the latest edition of this classic self-study course provides all the resources needed to speak, read, and write in French.The 12 weekly chapters contain lessons on the key grammatical structures and present a range of useful vocabulary, along with exercises to reinforce your learning. The essentials of French grammar are clearly explained and tested in conversational exercises, giving you the authentic feel of the language. In addition to a written "imitated pronunciation" guide, which replaces French sounds with English syllables you're already familiar with, the new audio app also allows you to perfect your pronunciation - at home or on the go.Whether you're learning

Being a big brother or sister isn't always easy. Join Ruby as she learns to adapt to having a new member of the family and discovers what it is really like to be a big sister. Ruby is three years old and is an only child.She is a little bit spoilt and is used to being the centre of attention in her family. But things are about to change. Ruby is going to have a new brother or sister soon.Ruby is excited - she can't wait to help her little brother or sister get dressed and play ball with them! But when Ruby's baby brother, Raj, is born, she realises that being a big sister isn't as fun or easy as she had expected... Follow this cheeky child as she discovers what it is truly like to be a big sister and have a new sibling in the family. It can be difficult for children to adapt to a new family dynamic, but it is important for families to talk about the tricky topic.Big Sister provides parents with a resource that promotes discussion and gently introduces toddlers to the idea of having a n

Sensual, pleasurable and the best guide of 365 ways to seriously great sex!Your year of sexual adventure begins with this Kama Sutra book. With 365 seductive positions (one for each day), visual illustrations and tips, you will be roaring with excitement in no time. Discover the spiritual and physical benefits of practising the Kama Sutra.Look forward to better connection and sexual peaks when you explore playfulness, 'mixing it up' and tantric moments. The visual guide includes: - Vibrant artworks that are easy to follow and always a turn on- Erotic tips and tricks with each position to help you reach maximum pleasure- Position selectors tailored to different moods and agility to help you find the perfect position- Updated with quirky, globe-trotting artworks, a proportion of same-sex couples, and gender-neutral language to arouse a new generation of cosmopolitan, inclusive lovers- Stylishly erotic designs, which bring a blast of graphic novel and anime appeal to revive this classicFr

A spacetastic new edition beaming with incredible pictures and the latest facts about the universe.From the origin of the universe to the future of space rockets, this book about space for kids has it

The practical guide to all of the skills you need to succeed as a leader.Discover how to improve your leadership skills by establishing a vision, inspiring others, and championing high performance. Es

Are you learning the flags of the world at school or home? Or do you always wonder which flags belong to which countries at sporting events? This clear guide is what you need!Flying the flag for count

Travel back in time with this picture-led guide and explore the magnificent monuments and fabulous tombs of Ancient Egypt.This book takes you through the history of one of the world’s most extraordina

Travel back to the year 1912 and experience the tragic tale of the world’s most famous and luxurious ocean liner.This fact-packed children’s book tells the story of Titanic’s fateful maiden voyage fro

Travel back in time with this picture-led guide and explore the magnificent monuments and fabulous tombs of Ancient Egypt.This book takes you through the history of one of the world’s most extraordina

Travel back to the year 1912 and experience the tragic tale of the world’s most famous and luxurious liner.This fact-packed children’s book tells the story of Titanic’s fateful maiden voyage from Sout

Discover the watery world that covers two-thirds of the globe and find out why oceans are so important to life on Earth.Meet jet-propelled octopuses and hermit crabs, look closely at seaweed, find out

See how young animals grow and change in the first weeks and months of their lives with this series of animal books for young nature lovers. Everyone loves little animals and this book is a must for fans of cute pets. This elegant book follows baby animals in beautiful, crisp photography through their early lives--from helpless newborns to confident, curious creatures on the cusp of adulthood. Meet a playful puppy, a curious kitten, and a delightful baby rabbit and watch how they grow. A series of photographs shows each animal at different stages in its early life. See a bunny before it grows fur, kittens learn to hunt, and a puppy play with toys. These books are a delight to read aloud to preschool children or for young readers to pick up themselves. A must for all young fans of animals.

Take a look at the wonders of Iceland, and learn fascinating facts about this snowy island country.Find out all about Iceland with this nonfiction reading book for children. Packed with facts, Welcome

Take a look at the wonders of Iceland, and learn fascinating facts about this snowy island country.Find out all about Iceland with this nonfiction reading book for children. Packed with facts, Welcome

Discover the watery world that covers two-thirds of the globe and find out why oceans are so important to life on Earth.Meet jet-propelled octopuses and hermit crabs, look closely at seaweed, find out