WeatherWill it be warm or cold?Should we wear shorts or pants?Shoes or boots?Read and find out why the weather is so difficult to predict.

    King Arthur was a good ruler, but now he needs a good ruler. What would you do if the neighboring kingdom were threatening war? Naturally, you'd call your strongest and bravest knights together to come up with a solution. But when your conference table causes more problems than the threat of your enemy, you need expert help. Enter Sir Cumference, his wife Lady Di of Ameter, and their son Radius. With the help of the carpenter, Geo of Metry, this sharp-minded team designs the perfect table conducive to discussing the perfect plan for peace. The first in Sir Cumference series, SIR CUMFERENCE AND THE FIRST ROUND TABLE makes math fun and accessible for everyone.

    "George makes drama large and small out of the minute-by-minute events in an ecosystem . . . gripping ecological theater." —C. "An example of nonfiction writing at its best." —SLJ. Notable 1990 Children's Trade Books in Social Studies (NCSS/CBC)Outstanding Science Trade Books for Children 1990 (NSTA/CBC)

    A story about the mighty saguaro cactus.

    Each fall, while the city's inhabitants dine on steaks, salads, and sandwiches, the great white sharks return to California's Farallon Islands to hunt their favorite meal: the seals that live on the island's rocky coasts. Massive, fast, and perfectly adapted to hunting after 11 million years of evolution, the great whites are among the planet's most fearsome, fascinating, and least understood animals. In the fall of 2012, Katherine Roy visited the Farallons with the scientists who study the islands' shark population. She witnessed seal attacks, observed sharks being tagged in the wild, and got an up close look at the dramatic Farallons—a wildlife refuge that is strictly off-limits to all but the scientsts who work there. Neighborhood Sharks is an intimate portrait of the life cycle, biology, and habitat of the great white shark, based on the latest research and an up-close visit with these amazing animals.

    Kids are invited to find out where worms live, see how they move, and understand why gardeners consider them friends with the help of this humorous and informative look at an unappreciated — and fascinating — creature.

    Here, readers are given the actual size of an eye right on the page, and we are informed how understand this whale's body size in relation to trucks, cars, milk bottles, and hippos! With an accurate and engaging text, fully vetted by a blue whale expert, and lyrically lovely illustrations, The Blue Whale is a book that invites children in and holds their attention. Its tempo is like a pleasing melody, which means that the information never becomes too weighty or exhausting―a key thing when it comes to young readers and their enjoyment of a book!

    Start eating your way through this alphabet book. Each turn of the page reveals a mouth-watering arrangement of foods: Indian corn, jalapeno, jicama, kumquat, kiwifruit and kohlrabi. Lois Ehlert's lively watercolors paired with bold easy-to-read type make for a highly appealing and accessible book for parents and children to devour. At the end of the book, Ehlert provides a detailed glossary that includes pronunciation, botanical information, the origin and history of the particular plant and occasional mythological references, with a small watercolor picture to remind the reader of what the plant looks like.

    Your body is built to move.Lizzy Rockwell explains how your bones and muscles, heart and lungs, nerves and brain all work together to keep you on the go. Kids walk and skate and tumble through these pages with such exuberance that even sprouting couch potatoes will want to get up and bounce around—and that’s the ultimate goal. Studies show that American kids are becoming more sedentary and more overweight and that they carry these tendencies with them into adolescence and adulthood. Experts agree that we need to help kids make physical activity a life-long habit. Through education, information, and encouragement, this book aims to inspire a new generation of busy bodies!

    Franklin also designed the lightning rod, suggested the idea of daylight savings time, and invented bifocals-all inspired by his common sense and intelligence. In this informative book, Gene Barretta brings Benjamin Franklin's genius to life, deepening our appreciation for one of the most influential figures in American history.Now & Ben is a 2007 Bank Street - Best Children's Book of the Year.

    Here you are invited to follow Sam Marshall, spider scientist extraordinaire (he’s never been bitten), as he explores the dense rainforest of French Guiana, knocking on the doors of tarantula burrows, trying to get a closer look at these incredible creatures. You’ll also visit the largest comparative spider laboratory in America—where close to five hundred live tarantulas sit in towers of stacked shoeboxes and plastic containers, waiting for their turn to dazzle and astound the scientists who study them.

    One by one, many of the seeds are lost -- burned by the sun, fallen into the ocean, eaten by a bird. But some survive the long winter and, come spring, sprout into plants, facing new dangers -- trampled by playing children, picked as a gift for a friend. Soon only the tiniest seed remains, growing into a giant flower and, when autumn returns, sending its own seeds into the wind to start the process over again. Eric Carle's eloquent text and brilliant collages turn the simple life cycle of a plant into an exciting story, a nature lesson, and an inspiring message of the importance of perseverance.

    Some animals wear hair. Some animals wear prickly spines and roam without a care!At first glance, a wild animal’s appearance may seem simple. But there is fascinating science behind every part of an animal’s physique—from its nose to its toes! Author Jennifer Ward explores different kinds of fur, feathers, skin, and scales in this nonfiction picture book.

    This comprehensive resource on the construction and use of ancient Egyptian pyramids is perfect for young readers looking to expand their knowledge on history, architecture, and ancient Egyptian civilization.

    There are also ligaments and joints that hold your bones together, and cartilage in your bendable parts like your ears and your nose. Learn all about what a skeleton can do—because this isn't some make-believe Halloween skeleton, this is the real skeleton inside you.