Originally published as a single two-year volume, Level 1 (Grade 1, this book) and Level 2 (Grade 2, available separately) have been redesigned as two separate simple-to-use one-year programs. Grade Recommendation: Grade 1.

    Each page is jam packed with hands-on activities and games covering spelling and vocabulary, reading comprehension, parts of speech, odds and evens, multiplication tables, and much, much more—with friendly illustrations throughout. Aligned with Common Core State Standards and expertly vetted by award-winning teachers, this workbook is designed to appeal to kids’ natural curiosity, with interactive layouts and easy-to-follow explanations that take the intimidation out of learning. Plus, it’s written to help parents follow along and explain key concepts for homework help! With colorful stickers, a fold-out poster, award certificate, and Brain Quest Mini Decks in the backAlso available: Summer Brain Quest Workbooks (Pre-K & K through Grades 5 & 6) and Brain Quest Decks (Pre-K through Grade 7).

    Get ready to amaze your friends—and yourself—with incredible calculations you never thought you could master, as renowned “mathemagician” Arthur Benjamin shares his techniques for lightning-quick calculations and amazing number tricks. This book will teach you to do math in your head faster than you ever thought possible, dramatically improve your memory for numbers, and—maybe for the first time—make mathematics fun.Yes, even you can learn to do seemingly complex equations in your head; all you need to learn are a few tricks. You’ll be able to quickly multiply and divide triple digits, compute with fractions, and determine squares, cubes, and roots without blinking an eye. No matter what your age or current math ability, Secrets of Mental Math will allow you to perform fantastic feats of the mind effortlessly. This is the math they never taught you in school.Also available as an eBook

    The consequences of losing beavers were profound: streams eroded, wetlands dried up, and species from salmon to swans lost vital habitat. Today, a growing coalition of “Beaver Believers”―including scientists, ranchers, and passionate citizens―recognizes that ecosystems with beavers are far healthier, for humans and non-humans alike, than those without them. From the Nevada deserts to the Scottish highlands, Believers are now hard at work restoring these industrious rodents to their former haunts. Eager is a powerful story about one of the world’s most influential species, how North America was colonized, how our landscapes have changed over the centuries, and how beavers can help us fight drought, flooding, wildfire, extinction, and the ravages of climate change. Ultimately, it’s about how we can learn to coexist, harmoniously and even beneficially, with our fellow travelers on this planet.

    Yet despite a century of medical progress, viral and bacterial disasters continue to take us by surprise, inciting panic and dominating news cycles. From the Spanish flu to the 1924 outbreak of pneumonic plague in Los Angeles to the 1930 “parrot fever” pandemic, through the more recent SARS, Ebola, and Zika epidemics, the last one hundred years have been marked by a succession of unanticipated pandemic alarms.In The Pandemic Century, a lively account of scares both infamous and less known, Mark Honigsbaum combines reportage with the history of science and medical sociology to artfully reconstruct epidemiological mysteries and the ecology of infectious diseases. We meet dedicated disease detectives, obstructive or incompetent public health officials, and brilliant scientists often blinded by their own knowledge of bacteria and viruses. We also see how fear of disease often exacerbates racial, religious, and ethnic tensions—even though, as the epidemiologists Malik Peiris and Yi Guan write, “‘nature’ remains the greatest bioterrorist threat of all.”Like man-eating sharks, predatory pathogens are always present in nature, waiting to strike; when one is seemingly vanquished, others appear in its place. These pandemics remind us of the limits of scientific knowledge, as well as the role that human behavior and technologies play in the emergence and spread of microbial diseases.

    Using full-color, highly detailed illustrations and clear, accessible language, this book is a fascinating introduction to how the body works and what may go wrong. The first part, Anatomy of the Human Body, begins with a medical atlas that shows how the parts of the body fit together. Each individual body system -- such as the skeletal and digestive systems -- is then fully illustrated and explained in detail. A compelling section on the human life cycle examines the changes in the body from conception to old age. In the second part of the book, Diseases and Disorders, some of the most common disorders are described and illustrated, system by system, with explanations of exactly what goes wrong and why. Medical conditions covered include infections, injuries, and cancer. Finally, there is a concise glossary of medical terms.

    Now, The Lost Spells, a book kindred in spirit and tone, continues to re-wild the lives of children and adults.The Lost Spells evokes the wonder of everyday nature, conjuring up red foxes, birch trees, jackdaws, and more in poems and illustrations that flow between the pages and into readers’ minds. Robert Macfarlane’s spell-poems and Jackie Morris’s watercolour illustrations are musical and magical: these are summoning spells, words of recollection, charms of protection. To read The Lost Spells is to see anew the natural world within our grasp and to be reminded of what happens when we allow it to slip away.

    Uh-oh! One of the twigs falls to the ground! But after a day of hard work, Bird's nest is ready and waiting. Can you guess what it's waiting for? Using simple, clear language and beautiful illustrations, this engaging story is the perfect introduction to physical forces for very young readers. A final spread with some simple questions promotes discussion with parents, teachers, or caregivers and encourages readers to think about the concepts introduced.

    There really are no ultimate authority figures-no one has the secret and there is no place to look up the definitive answers to our questions (not even Google). But, by thinking skeptically and logically, we can combat sloppy reasoning, bad arguments and superstitious thinking. It's difficult, and takes a lot of vigilance, but it's worth the effort.In this tie-in to their incredibly popular "The Skeptics Guide to the Universe" podcast, Steven Novella, MD along with "Skeptical Rogues" Bob Novella, Cara Santa Maria, Jay Novella, and Evan Bernstein will explain the tenets of skeptical thinking and debunk some of the biggest scientific myths, fallacies and conspiracy theories (Anti-vaccines, homeopathy, UFO sightings, etc.) They'll help us try to make sense of what seems like an increasingly crazy world using powerful tools like science and philosophy. THE SKEPTICS' GUIDE TO THE UNIVERSE is your guide through this maze of modern life. It covers essential critical thinking skills, as well as giving insight into how your brain works and how to avoid common pitfalls in thinking. They discuss the difference between science and pseudoscience, how to recognize common science news tropes, how to discuss conspiracy theories with that crazy coworker of yours, and how to apply all of this to everyday life.So, are you ready to join them on an epic scientific quest, one that has taken us from huddling in dark caves to stepping foot on the Moon? (Yes, we really did that.) Like all adventures, this one is foremost a journey of self discovery. The monsters you will slay and challenges you will face are mostly constructs of your own mind. With the SKEPTIC'S GUIDE TO THE UNIVERSE, we can do this together.

    Especially now, at a time when the sanctity of the wild and its inhabitants is increasingly threatened by human development and natural disaster, Adamson's remarkable tale is an idyll, and a model, to return to again and again.Illustrated with the same beautiful, evocative photographs that first enchanted the world forty years ago and updated with a new introduction by George Page, former host and executive editor of the PBS series Nature and author of Inside the Animal Mind, this anniversary edition introduces to a new generation one of the most heartwarming associations between man and animal.

    Objects in harmonic motion have the ability to transfer some of their energy over large distances. Light Nature: This chapter covers the nature of light, polarization, and color.

    The frolicking skeletons will captivate children and adults while they sing along with this well-known, catchy song. Accompanied by interesting, informative "bone facts" this book makes a wonderful addition to both home and classroom libraries and a fun treat for Halloween!

    But in recent decades, these claims have eroded, or even been disproven outright, by a revolution in the study of animal cognition. Take the way octopuses use coconut shells as tools; elephants that classify humans by age, gender, and language; or Ayumu, the young male chimpanzee at Kyoto University whose flash memory puts that of humans to shame. Based on research involving crows, dolphins, parrots, sheep, wasps, bats, whales, and of course chimpanzees and bonobos, Frans de Waal explores both the scope and the depth of animal intelligence. He offers a firsthand account of how science has stood traditional behaviorism on its head by revealing how smart animals really are, and how we’ve underestimated their abilities for too long.People often assume a cognitive ladder, from lower to higher forms, with our own intelligence at the top. But what if it is more like a bush, with cognition taking different forms that are often incomparable to ours? Would you presume yourself dumber than a squirrel because you’re less adept at recalling the locations of hundreds of buried acorns? Or would you judge your perception of your surroundings as more sophisticated than that of a echolocating bat? De Waal reviews the rise and fall of the mechanistic view of animals and opens our minds to the idea that animal minds are far more intricate and complex than we have assumed. De Waal’s landmark work will convince you to rethink everything you thought you knew about animal—and human—intelligence.

    . . a baby is here.A soon-to-be big sister and her parents prepare for the arrival of a new baby in the family. Alternating panels depict what the family is experiencing in tandem with how the baby is growing, spanning everything from receiving the news about the new baby to the excitement of its arrival. In this pregnancy book unlike any other one out there, watch what's actually happening through meticulously detailed, actual size illustrations, perfectly paired with a lyrical yet informative text, and culminating in a warm, joyful birth scene. Complete with backmatter that includes an elaboration on pregnancy, a list of amazing things babies can do before they're born, and more, Miranda Paul and Caldecott Honor Artist Jason Chin deliver another spectacular nonfiction picture book.