Building these simple yet sophisticated machines introduces fundamentals of math and physics using levers, force, torsion, tension, and traction. Instructions and diagrams illustrate how to build seven authentic working model catapults, including an early Greek ballista, a Roman onager, and the apex of catapult technology, the English trebuchet. Additional projects include learning how to lash and make rope and how to construct and use a hand sling and a staff sling. The colorful history of siege warfare is explored through the stories of Alexander the Great and his battle of Tyre; Saladin, Richard the Lionheart, and the Third Crusade; pirate-turned-soldier John Crabbe and his ship-mounted catapults; and Edward I of England and his battle against the Scots at Stirling Castle.

    Elected four times, he spent thirteen years in the White House. How he led the country through tremendously difficult problems, much like the ones facing America today, makes for a timely and engrossing biography.

    From the springtime frolic of Oscar, Cat-About-Town to the yuletide warmth of The Christmas Day Kitten, these stories-radiantly illustrated by Peter Barrett and Ruth Brown-are perennial favorites, and this new complete edition will make a wonderful gift for all readers, great and small.

    Learn about the fascinating lives of the great philosophers, musicians and inventors of the 1700 s. Recommended in Laura Berquist Syllabus Grade 5Author: Genevieve Foster Grade: 4-8 Pages: 355, Paperback Publisher: Beautiful Feet Books ISBN: 096438034X

    Penrose, a cat with a knack for math, takes children on an adventurous tour of mathematical concepts from fractals to infinity.

    Travel a few miles in any direction, and you'll encounter an amazing story that helps explain all the multitude of ways our country came to be." -- Lynne CheneyLynne Cheney and Robin Preiss Glasser, creators of the bestselling America: A Patriotic Primer and A is for Abigail: An Almanac of Amazing American Women, take you on an unforgettable tour of America -- from the Everglades of Florida to the grasslands of Kentucky to the Sierra Mountains of California.Listening to her grandchildren's enthusiastic account of all they saw and did on a family road trip inspired Lynne Cheney to collaborate with Robin Preiss Glasser and create Our 50 States -- the greatest family vacation imaginable. Pack your bags and celebrate our diverse heritage state by state and sea to shining sea in this treasure trove of America's people, places, and history.A scholar of American history, Mrs. Cheney has drawn on a lifetime of study and travel for Our 50 States. Robin Preiss Glasser has brought her inimitable wit and exuberance to every illustration. Together they have created a joyful book that reminds us how fortunate we are to call America our home.

    Acclaimed author/illustrator Jessie Hartland presents the fascinating 145-million-year journey of a dinsoaur: a Diplodocus longus, from its discovery in 1923 in Utah to its arrival in the hallowed halls of the Smithsonian National Museum of Natural History in Washington, D.C.

    An excellent education reference for classroom and homeschool grammar lessons.The Dragon Grammar Book is the perfect grammar study guide to help readers learn the rules of grammar and improve language art skills with ease and enjoyment. From multi-award-winning children's fantasy author, Diane Mae Robinson, The Dragon Grammar Book provides a fun and engaging approach to learning English grammar through easy-to-follow lessons, humorous example sentences, and chapter quizzes to conquer all those tricky grammar rules.- Easy-To-Understand Lessons organized to gradually build on the basic grammar rules toward an intermediate level.- Engaging Examples Sentences explain each grammar rule through a humorous and creative writing style.- An Expansive Resource of grammar terminology, confusing words, punctuation rules, types of sentences and proper structure, parts of speech, verb agreement, and more.- Quizzes with Answer Keys reinforce each lesson before proceeding to the next lesson.Featuring the zany fantasy characters in the author's international-award-winning The Pen Pieyu Adventures series, The Dragon Grammar Book is sure to be enjoyed by kids, teens, young adults, and the whole kingdom.2018 Book Excellence Awards, Winner, Education & Academics2018 Readers' Favorite Book Awards, Gold Medal, Children-Education2018 Literary Classics International Book Awards, Gold Medal, Educational Books2018 Lumen Award for Literary Excellence"Oriented toward pragmatic, real-world usage,The Dragon Grammar Book is a great resource for kids, their teachers, and anyone else who'd like to know more about language and how to use it. Most highly recommended."--Jack Magnus for Readers' Favorite."With clear examples and fun activities, this book is a must-have for readers and aspiring writers."-Peter Takach, English Teacher and Grammarian"Having a useful resource that engages students and includes a wide variety of grammar rules with short, fun examples is difficult to find. Robinson has produced a winner with this easy-to-navigate, all-inclusive, grammar book for kids."-Literary Titan"I've rarely come across as well presented and entertaining an approach to what can be an intimidating subject, particularly for a young audience or for adults learning English as a second language. Robinson gets to the heart of the really puzzling aspects of grammar and offers them up in a format designed to make learning grammar more fun."-Jack Magnus for Readers' Favorite"As a homeschool mom, I love using this book to teach my kids homeschool grammar because it is fun and engaging and helps them actually understand grammar while having fun! "-Christine Suarez

    This biographical picture book about the Notorious RBG, tells the justice’s story through the lens of her many famous dissents, or disagreements.

    Making the yearly trip from the Northern United States and Canada to the Oyamel forest of Mexico is no easy task, and it takes five generations of butterflies in order to do so. Battling cold temperatures and the threat of starvation, these beautiful insects complete an almost 3,000 mile journey over the course of two months, only to have to turn and around and head back home.National Geographic supports K-12 educators with ELA Common Core Resources.Visit www.natgeoed.org/commoncore for more information. From the Trade Paperback edition.

    Stunning photographic visuals complement this A to Z of countries and people groups providing an exciting learning experience and guide for prayer. Short stories about featured countries or people groups help relate foreign lands and people to children in the West. Each page includes a small map putting the country into perspective with neighboring countries, a fact box with essential country, and people information and prayer points that children can ask God for as well as thank God for.This invaluable resource develops cultural, political, and geographical awareness through a Christian lens. Families, churches, and schools will all benefit from this book and in turn be able to pray more effectively for their world.Winner of the 2002 Gold Medallion for Elementary Age Children.

    When her husband was given command of a clipper ship custom-made to travel quickly, she knew that they would need every bit of its speed for their maiden voyage: out of New York City, down around the tip of Cape Horn, and into San Francisco, where the Gold Rush was well under way. In a time when few women even accompanied their husbands onboard, Ellen Prentiss navigated their ship to set the world record for speed along that route. A Margaret Ferguson Book

    Every chipped rock, charred seed, or fossilized bone could be a clue to how people lived in the past. In this information-packed Let’s-Read-and-Find-Out Science book, Kate Duke explains what scientists are looking for, how they find it, and what their finds reveal. This nonfiction picture book is an excellent choice to share during homeschooling, in particular for children ages 4 to 6. It’s a fun way to learn to read and as a supplement for activity books for children.This is a Level 2 Let’s-Read-and-Find-Out Science title, which means the book explores more challenging concepts for children in the primary grades and supports the Common Core Learning Standards, Next Generation Science Standards, and the Science, Technology, Engineering, and Math (STEM) standards. Let’s-Read-and-Find-Out is the winner of the American Association for the Advancement of Science/Subaru Science Books & Films Prize for Outstanding Science Series.

    Dorren calculates that to speak fluently with half of the world's 7.4 billion people in their mother tongues, you would need to know no fewer than twenty languages. He sets out to explore these top twenty world languages, which range from the familiar (French, Spanish) to the surprising (Malay, Javanese, Bengali). Babel whisks the reader on a delightful journey to every continent of the world, tracing how these world languages rose to greatness while others fell away and showing how speakers today handle the foibles of their mother tongues. Whether showcasing tongue-tying phonetics or elegant but complicated writing scripts, and mind-bending quirks of grammar, Babel vividly illustrates that mother tongues are like nations: each has its own customs and beliefs that seem as self-evident to those born into it as they are surprising to the outside world. Among many other things, Babel will teach you why modern Turks can't read books that are a mere 75 years old, what it means in practice for Russian and English to be relatives, and how Japanese developed separate "dialects" for men and women. Dorren lets you in on his personal trials and triumphs while studying Vietnamese in Hanoi, debunks ten widespread myths about Chinese characters, and discovers that Swahili became the lingua franca in a part of the world where people routinely speak three or more languages. Witty, fascinating and utterly compelling, Babel will change the way you look at and listen to the world and how it speaks.

    New stadiums in this completely revised and updated edition include Citizens Bank Ballpark (Philadelphia), PETCO Park (San Diego), and the newly renovated RFK Stadium (Washington, D.C.) home to the Washington Nationals. Crammed with the statistics baseball fans love, Take Me Out to the Ballpark will hit a home run with legions of new readers this fall.