In ancient Greece, young Pythagoras discovers a special number pattern (the Pythagorean theorem) and uses it to solve problems involving right triangles.Book Details: Format: Paperback Publication Date: 4/1/2004 Pages: 32 Reading Level: Age 8 and Up

    Sleepy sloths, colorful cows, staggering skylines, terrible traffic—countless surprises await! All you need is a good guide and a little curiosity . . . so, what are you waiting for? Let's go! From award-winning author and illustrator Marc Martin comes a quirky, fact-filled adventure for curious globe-trotters, young and old.

    When a rescue boat and a convoy of divers arrive to help the struggling humpback, a realistic and moving encounter bridges the human and aquatic worlds.

    Describes the burial of the Pharaoh Tutankhamen and the discovery of his long-lost tomb by archaeologists more than 3000 years later.

    "Truly a book for all seasons."--Horn Book.

    But how does a tiny seed turn into a big pumpkin? With clear text and detailed, colorful illustrations, this book explains what a pumpkin seed needs to help it grow! This book also includes delicious pumpkin recipes and easy experiments to do with pumpkin seeds.This is a Stage 1 Let’s-Read-and-Find-Out, which means the book explains simple science concepts for preschoolers and kindergarteners. 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.Supports the Common Core Learning Standards and Next Generation Science Standards

    The book encourages children to listen, read, and learn. Full color illustrations.

    Soon the fruit is big, red, and ready to be picked. It's time to make an apple pie! Here is a celebration of apples and how things grow--sure to delight young readers all year long.

    It also includes hundreds of web site addresses for further research.

    It’s time. Today is the day he will once again cast himself into the air, spiral upward into the clouds, and bank into the wind.He wears a black band on his lower right leg and an orange flag on his upper left, bearing the laser inscription B95. Scientists call him the Moonbird because, in the course of his astoundingly long lifetime, this gritty, four-ounce marathoner has flown the distance to the moon—and halfway back! B95 is a robin-sized shorebird, a red knot of the subspecies rufa. Each February he joins a flock that lifts off from Tierra del Fuego, headed for breeding grounds in the Canadian Arctic, nine thousand miles away.  Late in the summer, he begins the return journey. B95 can fly for days without eating or sleeping, but eventually he must descend to refuel and rest. However, recent changes at ancient refueling stations along his migratory circuit—changes caused mostly by human activity—have reduced the food available and made it harder for the birds to reach. And so, since 1995, when B95 was first captured and banded, the worldwide rufa population has collapsed by nearly 80 percent. Most perish somewhere along the great hemispheric circuit, but the Moonbird wings on. He has been seen as recently as November 2011, which makes him nearly twenty years old. Shaking their heads, scientists ask themselves: How can this one bird make it year after year when so many others fall?  National Book Award–winning author Phillip Hoose takes us around the hemisphere with the world’s most celebrated shorebird, showing the obstacles rufa red knots face, introducing a worldwide team of scientists and conservationists trying to save them, and offering insights about what we can do to help shorebirds before it’s too late. Through prose, research, and images, Hoose explores the tragedy of extinction through the triumph of a single bird.

    Frizzle's class is learning all about water. And when Wanda suggests they take a trip to Waterland, Ms Frizzle gets that funny look in her eyes. But instead of taking her class to the water theme park, she takes them on a seriously wet and wild ride - through the water cycle! Join the class as they evaporate, condense, rain, and make their way back to the ocean...only to evaporate all over again!

    But what do all of these beaks do? Discover how beaks of different shapes and sizes are adapted to help birds sip nectar, make nests, battle for mates, and more!

    His mother, a rescued East German circus bear, didn't know how to take care of Knut and rejected him. Knut would have died if it weren't for Thomas Dorflein, a zookeeper who nurtured Knut, feeding him, sleeping with him, and giving him the love and attention Knut needed to thrive. But Thomas wasn't the only one who adopted Knut. The adorable little polar bear captured the world's attention, and now Knut is loved around the globe.

    Piccolo shows boys and girls about sharing their strength with those who are smaller, younger or weaker.

    Charles Darwin's theory of common descent no longer needs to be a scientific mystery to inquisitive young readers. Meet Grandmother Fish.Told in an engaging call and response text where a child can wiggle like a fish or hoot like an ape and brought to life by vibrant artwork, Grandmother Fish takes children and adults through the history of life on our planet and explains how we are all connected.The book also includes comprehensive backmatter, including:- An elaborate illustration of the evolutionary tree of life- Helpful science notes for parents- How to explain natural selection to a child