First published to wide acclaim in 2002, this eye-opening book has since become a classic, promoting "world-mindedness" by imagining the world's population -- all 6.8 billion of us -- as a village of just 100 people. Now, If the World Were a Village has been newly revised with updated statistics, several new activities and completely new material on food security, energy and health. By exploring the lives of the 100 villagers, children will discover that life in other nations is often very different from their own. If the World Were a Village is part of CitizenKid: A collection of books that inform children about the world and inspire them to be better global citizens.

    She knew how many miles it was to the moon (and how many back). She loved studying algebra and geometry and calculus and using math to solve problems in the outside world.Soon math led her to MIT and then to helping NASA put a man on the moon! She handwrote code that would allow the spacecraft’s computer to solve any problems it might encounter. Apollo 8. Apollo 9. Apollo 10. Apollo 11. Without her code, none of those missions could have been completed.Dean Robbins and Lucy Knisley deliver a lovely portrayal of a pioneer in her field who never stopped reaching for the stars.

    . . Charles Darwin was, above all else, an independent thinker who continues even now to influence the way we look at the natural world. His endless curiosity and passion for detail resulted in a wealth of notebooks, diaries, correspondence, and published writings that Peter Sís transforms into a visual treasure trove. A multilayered journey through Darwin’s world, The Tree of Life begins with his childhood and traces the arc of his life through university and career, following him around the globe on the voyage of the Beagle, and home to a quiet but momentous life devoted to science and family. Sís uses his own singular vision to create a gloriously detailed panorama of a genius’s trajectory through investigating and understanding the mysteries of nature. In pictures executed in fine pen and ink and lush watercolors – cameo portraits, illustrated pages of diary, cutaway views of the Beagle, as well as charts, maps, and a gatefold spread – Peter Sís has shaped a wondrous introduction to Charles Darwin.

    Brought to life with lyrical text by award-winning author Donna Jo Napoli and stunning artwork by award-winning illustrator Christina Balit, the tales of gods and goddesses such as Zeus, Aphrodite, Apollo, and Athena and heroes and monsters such as Helen of Troy, Perseus, and Medusa will fascinate and engage children’s imaginations.   National Geographic completes the book with embellishments of each story: sidebars for each god, goddess, hero, and monster link the myths to constellations, geography, history, and culture to help young readers connect the stories to real life events, people, and places. A family tree and a “cast of characters” profile page help make relationships between the characters clear, and a mapping feature adds to the fun and fascination. Resource notes and ample back matter directing readers to more information round out this luminous book. Sure to dazzle all those intrigued with the fantastic tales of Greek mythology and enchant new readers, this vibrant book will soon become a family keepsake.National Geographic supports K-12 educators with ELA Common Core Resources.Visit www.natgeoed.org/commoncore for more information.

    Fans often wish they'd discovered these learning strategies earlier and ask how they can help their kids master these skills as well. Now in this new book for kids and teens, the authors reveal how to make the most of time spent studying.      We all have the tools to learn what might not seem to come naturally to us at first--the secret is to understand how the brain works so we can unlock its power. This book explains:  *  Why sometimes letting your mind wander is an important part of the learning process  *  How to avoid "rut think" in order to think outside the box  *  Why having a poor memory can be a good thing  *  The value of metaphors in developing understanding  *  A simple, yet powerful, way to stop procrastinatingFilled with illustrations, application questions, and exercises, this book makes learning easy and fun.

    Is there enough time? You have 3 shirts and 2 pairs of pants. Can you make 1 good outfit? Then you start to wonder: Why does everything have to be such a problem? Why do 2 apples always have to be added to 5 oranges? Why do 4 kids always have to divide 12 marbles? Why can't you just keep 10 cookies without someone taking 3 away? Why? Because you're the victim of a Math Curse. That's why. But don't despair. This is one girl's story of how that curse can be broken.

    In this fun and accessible guide, McKellar—dubbed a “math superstar” by The New York Times—gives girls and their parents the tools they need to master the math concepts that confuse middle-schoolers most, including fractions, percentages, pre-algebra, and more. The book features hip, real-world examples, step-by-step instruction, and engaging stories of Danica's own childhood struggles in math (and stardom). In addition, borrowing from the style of today's teen magazines, it even includes a Math Horoscope section, Math Personality Quizzes, and Real-Life Testimonials—ultimately revealing why math is easier and cooler than readers think.

    The key feature of this classic title is the section of star charts that are cherished by backyard astronomers everywhere. Each new edition has outsold the previous one because of thorough revisions and additional new material.NightWatch has been acclaimed as the best general interest introduction to astronomy. The fourth edition has improvements over the 3rd edition in every chapter, including:The famous charts, ideal for stargazers using a small telescope or binoculars A complete update of the equipment section, including computerized telescopes An enlarged photography section, including how-to instructions for using the new generation of digital cameras for astronomical photography, both with and without a telescope The tables of future solar and lunar eclipses, planetary conjunctions and planet locations, updated through 2025. This edition includes star charts for use in the southern hemisphere. There are also dozens of new photographs throughout the book that show the latest thrilling discoveries made by current space observatories and probes.

    But Leonardo da Vinci thought of all these ideas more than five hundred years ago! At once an artist, inventor, engineer, and scientist, da Vinci wrote and drew detailed descriptions of what would later become hang gliders, automobiles, robots, and much more. Gene Barretta cleverly shows how Leonardo’s ideas—many inspired by his love of nature—foreshadowed modern inventions, offering a window into the future.

    But it doesn't really. The moon revolves around the Earth. It takes about four weeks to make the journey, and as it travels round we can only see certain parts of it. Try the simple experiment described inside using an orange, a pencil, and a flashlight, and you'll understand why the moon seems to change.

    Spanning the first century of the Industrial Revolution, this 1868 compilation features simplified, concise illustrations of the mechanisms used in hydraulics, steam engines, pneumatics, presses, horologes, and scores of other machines.The movements of each of the 507 mechanisms are depicted in drawings on the left-hand page, and the facing page presents a brief description of the item's use and operation. Ranging from simple to intricately complex, the mechanisms offer a fascinating view of the variety of small components that constitute complex machinery. A detailed index provides easy reference to specific mechanisms.Inventors, tinkerers, and anyone with an interest in the history of invention and technology will find this volume a treasury of information and inspiration.

    The effects of homeopathy don’t go away under rigorous scientific conditions. The laws of nature aren’t what they used to be. Thirty years on, no one has an explanation for a seemingly intelligent signal received from outer space. The US Department of Energy is re-examining cold fusion because the experimental evidence seems too solid to ignore. The placebo effect is put to work in medicine while doctors can’t agree whether it even exists.In an age when science is supposed to be king, scientists are beset by experimental results they simply can’t explain. But, if the past is anything to go by, these anomalies contain the seeds of future revolutions. While taking readers on an entertaining tour d’horizon of the strangest of scientific findings – involving everything from our lack of free will to Martian methane that offers new evidence of life on the planet – Michael Brooks argues that the things we don’t understand are the key to what we are about to discover.This mind-boggling but entirely accessible survey of the outer limits of human knowledge is based on a short article by Michael Brooks for New Scientist magazine. It became the sixth most circulated story on the internet in 2005, and provoked widespread comment and compliments (Google “13 things that do not make sense” to see).Michael Brooks has now dug deeply into those mysteries, with extraordinary results.

    Including real stories about passengers on the Railroad, this book chronicles slaves' close calls with bounty hunters, exhausting struggles on the road, and what they sacrificed for freedom. With 80 black-and-white illustrations throughout and a sixteen-page black-and-white photo insert, the Underground Railroad comes alive!

    At the time, Watson was only 24, a young scientist hungry to make his mark. His uncompromisingly honest account of the heady days of their thrilling sprint against other world-class researchers to solve one of science's greatest mysteries gives a dazzlingly clear picture of a world of brilliant scientists with great gifts, very human ambitions & bitter rivalries. With humility unspoiled by false modesty, Watson relates his & Crick's desperate efforts to beat Linus Pauling to the Holy Grail of life sciences, the identification of the basic building block of life. Never has a scientist been so truthful in capturing in words the flavor of his work.

    Reissued in the exciting new Roald Dahl branding. Boy is the story of Roald Dahl's very own boyhood, including tales of sweet-shops and chocolate, mean old ladies and a Great Mouse Plot - the inspiration for some of his most marvellous storybooks in the years to come. Going Solo tells of how, when he grew up, Roald Dahl left England for Africa and later went flying with the Royal Air Force, before he became the world's number-one storyteller. You can listen to all of Roald Dahl's stories on Puffin Audiobooks, read by some very famous voices, including Kate Winslet, David Walliams and Steven Fry - plus there are added squelchy soundeffects from Pinewood Studios! Also look out for new Roald Dahl apps in the App store and Google Play- including the disgusting TWIT OR MISS! and HOUSE OF TWITS inspired by the revolting Twits.