Broad topics are broken down into easily comprehensible statements, and Pop Quiz and Odd Fact sections help reinforce the learning process and keep things interesting. 100 illustrations.

    Back then, most experts believed that differences in how girls and boys behave are mainly due to differences in how they were treated by their parents, teachers, and friends.It's hard to cling to that belief today. An avalanche of research over the past twenty years has shown that sex differences are more significant and profound than anybody guessed. Sex differences are real, biologically programmed, and important to how children are raised, disciplined, and educated. In Why Gender Matters, psychologist and family physician Dr. Leonard Sax leads parents through the mystifying world of gender differences by explaining the biologically different ways in which children think, feel, and act. He addresses a host of issues, including discipline, learning, risk taking, aggression, sex, and drugs, and shows how boys and girls react in predictable ways to different situations. For example, girls are born with more sensitive hearing than boys, and those differences increase as kids grow up. So when a grown man speaks to a girl in what he thinks is a normal voice, she may hear it as yelling. Conversely, boys who appear to be inattentive in class may just be sitting too far away to hear the teacher—especially if the teacher is female. Likewise, negative emotions are seated in an ancient structure of the brain called the amygdala. Girls develop an early connection between this area and the cerebral cortex, enabling them to talk about their feelings. In boys these links develop later. So if you ask a troubled adolescent boy to tell you what his feelings are, he often literally cannot say.Dr. Sax offers fresh approaches to disciplining children, as well as gender-specific ways to help girls and boys avoid drugs and early sexual activity. He wants parents to understand and work with hardwired differences in children, but he also encourages them to push beyond gender-based stereotypes. A leading proponent of single-sex education, Dr. Sax points out specific instances where keeping boys and girls separate in the classroom has yielded striking educational, social, and interpersonal benefits. Despite the view of many educators and experts on child-rearing that sex differences should be ignored or overcome, parents and teachers would do better to recognize, understand, and make use of the biological differences that make a girl a girl, and a boy a boy.

    nicely communicates the wonder ... Especially effective is the eight-pictured depiction of the development of the caterpillar into a chrysalis." --School Library JournalObserving a Monarch butterfly as it transforms itself from caterpillar to chrysalis to butterfly is among the most thrilling experiences that nature offers. Raising Monarch butterflies is made easy with the help of this detailed guide.How to Raise Monarch Butterflies explains what threats Monarchs face today and how readers can help conserve the Monarch's feeding grounds from encroachment. Revel in one of the most remarkable miracles of nature.This updated edition contains:More than 40 new colorful and detailed photos More secrets to help you find eggs and caterpillars Instructions on how to feed a monarch and more details on their care Expanded information on varieties and propagation of milkweed New page on the diverse insects in the milkweed patch New suggestions for starting a butterfly garden, including a large photograph of an outstanding Monarch Waystation.

    Children and parents love the activities, ranging from cooking projects to crafts, board games to science experiments, and puzzles to projects.Each Story of the World Activity Book provides a full year of history study when combined with the Textbook, Audiobook, and Tests—each available separately to accompany each volume of The Story of the World Activity Book. Activity Book 2 Grade Recommendation: Grades 1-6.

    . . 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.

    The descriptive text includes information on size, geological period, geographical distribution, and ecology of the animal or plant before it was fossilized. In addition, the book provides lists of Geological Survey offices and major fossil collections, a geological time chart, and a guide to collecting and preserving fossils.

    But it's not just a guide to giggling at sleepovers--although that's included, of course! Whether readers consider themselves tomboys, girly-girls, or a little bit of both, this book is every girl's invitation to adventure.

    With thousands of breathtaking photographs and unique visual catalogues of the features and phenomena that take place on Earth -- such as rocks, minerals, and mountains to tropical rain forests and the different types of clouds -- Earth contains the most up-to-date ideas on how our world works, a compelling review on the health of the planet, and unbelievable images of the world's most stunning features.

    Divided into six chapters -- space, earth, nature, human body, science & technology, and history & culture, plus a reference section -- a wide range of topics come to life. Illustrated with fascinating facts, maps, timelines, and graphics, the Knowledge Encyclopedia makes complex subjects easy to understand and is the perfect resource for kids, whether to help them with homework or to pique their curiosity.

    In simple rhymes, Tang explains the fundamentals of how each number from 1 to 10 works. His poem "Four Eyes," for example, explains how any number multiplied by four can be merely doubled twice: "Four is very fast to do, when you multiply by 2. Here's a little good advice -- please just always double twice!" He then goes on to explain: "What is 4x4? It's 4 doubled twice. Double once: 4+4=8. Double twice: 8+8=16," and he even provides extra challenge questions below. All of his poems and problems are just as easy (e.g., a number times 6 is tripled, then doubled; a number times 9 is multiplied by 10, then subtracted once), and the book is rounded out with full practice tables in the back.Tang provides children with an excellent lesson, helping them make sense of daunting math without a bombardment of complicated rules. Kids will cheer his winsome presentation, which is wonderfully complemented by Harry Brigg's computer illustrations of animals cavorting around and having fun. Both practical and pleasing, The Best of Times is math that'll help make homework and tests a breeze. Matt Warner

    Quality assurance was conducted on each of these books in an attempt to remove books with imperfections introduced by the digitization process. Though we have made best efforts - the books may have occasional errors that do not impede the reading experience. We believe this work is culturally important and have elected to bring the book back into print as part of our continuing commitment to the preservation of printed works worldwide.

    

    Beginning with the Big Bang, David Christian views the interaction of the natural world with the more recent arrivals in flora and fauna, including human beings.Cosmology, geology, archeology, and population and environmental studies—all figure in David Christian's account, which is an ambitious overview of the emerging field of "Big History." Maps of Time opens with the origins of the universe, the stars and the galaxies, the sun and the solar system, including the earth, and conducts readers through the evolution of the planet before human habitation. It surveys the development of human society from the Paleolithic era through the transition to agriculture, the emergence of cities and states, and the birth of the modern, industrial period right up to intimations of possible futures. Sweeping in scope, finely focused in its minute detail, this riveting account of the known world, from the inception of space-time to the prospects of global warming, lays the groundwork for world history—and Big History—true as never before to its name.

    in full color. "An ancient history lesson emerges from this account of the way the Greeks tricked the Trojans and rescued Helen of Troy. The book is well tailored to younger readers with careful explanations and short sentences; a pronunciation guide is appended. Drawings portray the story's main events. A nice supplement to units on ancient Greece or mythology."--Booklist.

    He recaps the life events that influenced his choice to become an astronaut and captures the thrilling experience of landing on the moon.