Built in MMVIII. Roman numerals are everywhere---on clocks, in books, and on buildings. But what do Roman numerals mean, and how does one use them? Fun with Roman Numerals is a straightforward and appealing introduction to a timely topic. On a scale of I to X, it's an XI!

    "These entertaining, deftly organized books will make terrific light-hearted additions to cirriculum units on ancient civilizations." — Publishers WeeklyStop the presses! What if ancient civilizations had daily newspapers? And they were amusing and compellingly informative? They might just look like this innovative series of historical nonfiction, presented in a unique, kid-friendly format.

    Detailed color exercises allow the "artist" to recognize countries by shape as well as location, gain a sense of the relative sizes of nations and states, and visualize the location of a nation within the context of its continent.

    A biography of a strong and dedicated woman who successfully worked for the recognition of women in the field of medicine in both the United States and Great Britain.

    But in his mind, he envisions himself traveling at a speed beyond imagining, on a beam of light. This brilliant mind will one day offer up some of the most revolutionary ideas ever conceived. From a boy endlessly fascinated by the wonders around him, Albert Einstein ultimately grows into a man of genius recognized the world over for profoundly illuminating our understanding of the universe. Jennifer Berne and Vladimir Radunsky invite the reader to travel along with Einstein on a journey full of curiosity, laughter, and scientific discovery. Parents and children alike will appreciate this moving story of the powerful difference imagination can make in any life.

    And, it's true, many of them do. But Paul Erdos never followed the usual path. At the age of four, he could ask you when you were born and then calculate the number of seconds you had been alive in his head. But he didn't learn to butter his own bread until he turned twenty. Instead, he traveled around the world, from one mathematician to the next, collaborating on an astonishing number of publications. With a simple, lyrical text and richly layered illustrations, this is a beautiful introduction to the world of math and a fascinating look at the unique character traits that made "Uncle Paul" a great man.

    What to do? Then he comes up with the perfect solution—a traveling library! He buys two donkeys—Alfa and Beto—and travels with them throughout the land, bringing books and reading to the children in faraway villages. Beautiful!Complete with an author's note about the real man on whom this story is based.

    When she was told that she was going to be given as a wedding gift to Martha Washington’s granddaughter, Ona made the bold and brave decision to flee to the north, where she would be a fugitive. From her childhood, to her time with the Washingtons and living in the slave quarters, to her escape to New Hampshire, Erica Armstrong Dunbar, along with Kathleen Van Cleve, shares an intimate glimpse into the life of a little-known, but powerful figure in history, and her brave journey as she fled the most powerful couple in the country.

    Everyone has heard of Albert Einstein-but what exactly did he do? How much do kids really know about Albert Einstein besides the funny hair and genius label? For instance, do they know that he was expelled from school as a kid? Finally, here's the story of Albert Einstein's life, told in a fun, engaging way that clearly explores the world he lived in and changed.

    A riveting tale of intrigue, spies, counterspies and secret agents, George Washington, Spymasteris a unique and entertaining account of one of the most important chapters in our nation's history. The compelling narrative reveals the surprising role played by the first commander-in-chief, General George Washington in the War of Independence. Follow the action as 1775 dawns, and Washington finds himself in serious trouble. At war with Britain, the world's most powerful empire, his ragtag army possesses only a few muskets, some cannons, and no money. The Americans' only hope is to wage an invisible war—a war of spies, intelligence networks, and deception. Enter the shadowy world of double agents, covert operations, codes and ciphers—a world so secret that America's spymaster himself doesn't know the identities of some of his agents. Meet members of the elusive Culper Ring, uncover a "mole" in the Sons of Liberty, and see how invisible ink and even a clothesline are used to send secret messages. You can even use Washington's own secret codebook, published here for the first time. Experience at close quarters the successes and failures of the Americans as they strive to outwit the British. Meet the chief of covert operations, one Benjamin Franklin, and several other surprising players in America's secret war. Author Thomas B. Allen has sifted through dozens of historical documents and coded letters to uncover the facts about a time shrouded in secrets. Archival art, coupled with lively pen-and-ink sketches by children's illustrator Cheryl Harness, detail all the action and adventure of this momentous tale. Like the highly acclaimed hardback, this little paperback is sure to have a big impact on the imagination of readers everywhere.National Geographic supports K-12 educators with ELA Common Core Resources.Visit www.natgeoed.org/commoncore for more information.

    The ship is full of exciting places to explore, but when George ventures into the first class storage cabin, a terrible boom shakes the entire boat. Suddenly, water is everywhere, and George's life changes forever.Lauren Tarshis brings history's most exciting and terrifying events to life in this new fictional series. Readers will be transported by stories of amazing kids and how they survived!

    Martin Luther King Jr. speak. They protested the laws that kept black people separate from white people. Facing fear, hate, and danger, these children used their voices to change the world.

    When a professor discovered that the homework sent to him under a male pen name came from a woman...nothing stopped Sophie. And when she tackled a math problem that male scholars said would be impossible to solve...still, nothing stopped Sophie.For six years Sophie Germain used her love of math and her undeniable determination to test equations that would predict patterns of vibrations. She eventually became the first woman to win a grand prize from France's prestigious Academy of Sciences for her formula, which laid the groundwork for much of modern architecture (and can be seen in the book's illustrations).Award-winning author Cheryl Bardoe's inspiring and poetic text is brought to life by acclaimed artist Barbara McClintock's intricate pen-and-ink, watercolor, and collage illustrations in this true story about a woman who let nothing stop her.

    From that day on he never stopped marveling at the universe and seeking to understand it better. Star Stuff follows Carl from his days star gazing from the bedroom window of his Brooklyn apartment, through his love of speculative science fiction novels, to his work as an internationally renowned scientist who worked on the Voyager missions exploring the farthest reaches of space. This book introduces the beloved man who brought the mystery of the cosmos into homes across America to a new generation of dreamers and star gazers.

    S. of A. States all over the country were waking up, having their first cups of coffee, reading the morning paper, and enjoying the beautiful sunrise.All the states, that is, except for Kansas."At the first annual "states party," Virginia and Idaho hatch a plan to swap spots so each can see another part of the country. Before the party is over, all the states decide to switch places. In the beginning, every state is happy in its new location. But soon things start to go wrong. Will the states ever unscramble themselves and return to their proper places?Packed with madcap humor and whimsical illustrations, this quirky story-starring all fifty states-is chock-full of introductory facts and silly antics that will make learning geography as much fun as taking a vacation.