It melts into water and then vanishes! The ice cube changes from solid to liquid to gas. . . . Read on to find out more about the three states of matter.

    It's even worse when it's your fault.

    Symmetry is when one shape looks the same if you flip, slide, or turn it. It's in words and even letters. It's in both nature and man-made things. In fact, art, design, decoration, and architecture are full of it. This clear and concise book explains different types of symmetry and shows you how to make your own symmetrical masterpieces. Notes and glossary are included.

    . . John [Hancock], Paul [Revere], George [Washington], and Ben [Franklin]. Oh yes, there was also Tom [Jefferson], but he was annoyingly independent and hardly ever around. These lads were always getting into trouble for one reason or another. In other words, they took a few . . . liberties. And to be honest, they were not always appreciated. Until one day, they all played a part in securing America's freedom."Deftly drawn, witty, and instantly appealing, the illustrations creatively blend period elements such as wood-grain and crackle-glaze texturing, woodcut lines, and formal compositions typical of the era, with gaping mouths and stylized, spiraling eyes typical of modern cartoons," wrote Booklist, and School Library Journal declared, "Exercise your freedom to scoop up this one."

    Some women could be teachers or seamstresses, but career options were few. Certainly no women were doctors. But Elizabeth refused to accept the common beliefs that women weren’t smart enough to be doctors, or that they were too weak for such hard work. And she would not take no for an answer. Although she faced much opposition, she worked hard and finally—when she graduated from medical school and went on to have a brilliant career—proved her detractors wrong. This inspiring story of the first female doctor shows how one strong-willed woman opened the doors for all the female doctors to come.

    Over 7,000 years ago Native Americans settled on the Nashua River, a beautiful and leafy valley. But the industrialization of nearby areas would lead to the deterioration of natural habitats. Each double spread examines brief periods of time when the river and surrounding areas teemed with wildlife. Lynne Cherry’s contrasting illustrations of the lush valley and the eventual polluted river deliver an astonishing look at our dramatic need for conservation efforts. This pictorial history of the river, edging towards a hopeful scene of modern-day descendants of both Native Americans and European settlers who come together to combat pollution and restore the beauty of the river, is an intelligent tale that shows young readers how they can do their part in taking care of the world around them, one river at a time.

    Now you can follow The Questioneers' further adventures in brand-new chapter books! The first installment, Rosie Revere and the Raucous Riveters, is a spirited story about the power of teamwork and the true meaning of home.   Rosie Revere is no stranger to flops and fails, kerfuffles and catastrophes. After all, engineering is all about perseverance! But this time, Rosie has a really important project to tackle—one that feels much bigger than herself.   Rosie’s beloved Aunt Rose and her friends, the Raucous Riveters—a group of fun-loving gals who built airplanes during World War II—need help inventing something new. And Rosie is just the engineer for the job!   After one flop . . . then another . . . and another . . . Rosie starts to lose hope. But thanks to some help from her fellow Questioneers Iggy Peck and Ada Twist, Rosie gets the job done. And, along with the Riveters, she rediscovers the meaning of home.   Collect them all! Add these other STEM favorites from #1 New York Times bestselling team Andrea Beaty and David Roberts to your family library today!  Rosie Revere, EngineerAda Twist, ScientistIggy Peck, ArchitectAda Twist and the Perilous PantsAda Twist’s Big Project Book for Stellar ScientistsIggy Peck’s Big Project Book for Amazing ArchitectsRosie Revere’s Big Project Book for Bold EngineersQuestioneers Family Calendar

    And he determined that one day his camera would capture for others the wonder of the tiny crystal. Bentley's enthusiasm for photographing snowflakes was often misunderstood in his time, but his patience and determination revealed two important truths: no two snowflakes are alike; and each one is startlingly beautiful. His story is gracefully told and brought to life in lovely woodcuts, giving children insight into a soul who had not only a scientist's vision and perseverance but a clear passion for the wonders of nature. Snowflake Bentley won the 1999 Caldecott Medal.

    Working in a painterly, expressive way, Jenni Desmond creates landscapes and creatures that are marked by atmosphere and emotion, telling a story about bears that engages the reader's interest in amazing facts as well as their deep sense of wonder.

    From Marta in Azezo, Ethiopia, and Luciano in M?rida, Venezuela, to Alina in Taraz, Kazakhstan, and Lu in Shanghai, China, the children who are profiled live in places that truly span the globe. However, while there are huge differences in their environments, all the children share similar desires to learn, read and play with others. Alice Feagan's charming cut-paper collage artwork further enhances the idea of a global community by featuring smiling, enthusiastic children's faces, which are equally joyous and filled with life in every situation. As with all the titles in the popular Around the World series, using a familiar concept such as going to school is a perfect way to introduce children to other cultures and places in social studies classes. The author has provided several resources at the end of the book, including discussion topics and a list of organizations that help children access education. A world map at the beginning of the book shows the location of each of the countries, and a glossary contains definitions of the foreign words. These, along with a table of contents, make useful tools for familiarizing young readers with book navigation.

    New York City in the 1860s was a mess: crowded, disgusting, filled with garbage. You see, way back in 1860, there were no subways, just cobblestone streets. That is, until Alfred Ely Beach had the idea for a fan-powered train that would travel underground. On February 26, 1870, after fifty-eight days of drilling and painting and plastering, Beach unveiled his masterpiece—and throngs of visitors took turns swooshing down the track. The Secret Subway will wow readers, just as Beach’s underground train wowed riders over a century ago.

    Why are they all alone in empty cages? Are they being punished? More than anything, he wants to be their champion—their voice—but he stutters uncontrollably. Except when he talks to animals… Then he is fluent. Follow the life of the man Time Magazine calls, "the Indiana Jones of wildlife conservation"as he searches for his voice and fulfills a promise to speak for animals, and people, who cannot speak for themselves. This real-life story with tender illustrations by Catia Chien explores truths not defined by the spoken word.

    Butterflies can't survive cold weather, so when winter comes, many butterflies fly to warmer places. They migrate. Woodchucks don't like cold weather either but they don't migrate; they hibernate. Woodchucks sleep in their dens all winter long. Read and find out how other animals cope with winter's worst weather. This is a Level One 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.

    right? But what if everybody did that? What if everybody broke the rules ... and spoke during story time, didn’t wash up, or splashed too much at the pool? Then the world would be a mess. But what if everybody obeyed the rules so that the world would become a better place? Using humorous illustrations rendered in mixed media, these questions are answered in a child-friendly way and show the consequences of thoughtless behavior.

    Spring after spring, year after year, she observed how all living things are connected. And as an adult, Rachel watched and listened as the natural world she loved so much began to fall silent. Spring After Spring traces Rachel’s journey as scientist and writer, speaking truth to an often hostile world through her book, and ultimately paving the way for the modern environmental movement.