A life of the Genoese weaver's son who sought to prove the world is round, telling how he studied map-making in Portugal, waited long years for financial and material support from Isabella of Spain, and finally made four voyages to the New World.

    During he voyage to Mawson Station and back, Sophie keeps a diary. She sees icebergs, penguins, seals and whales. She makes new friends, wonders at the southern lights and even becomes stranded in a blizzard.

    Sometimes a germ catches up with you.Germs are all around you, but they are too small for you to see. Many germs are harmless, but two kinds, viruses and bacteria, can make you sick. Read and find out about germs, how they can make you sick, and how your body works to fight them off and keep you healthy.

    It's a math class you'll never forget.This classic picture book is an ALA Notable Book, a Reading Rainbow Feature Selection, and a Boston Globe/Horn Book Honor Book for Illustration.The repackage of this fun look at math concepts includes a letter from the author that features several ways for children to find a million everyday things.

    Graeme Base takes the reader on a journey of discovery, from the plains of Africa and the jungles of the Amazon to the woodlands of North America and the deserts of the Australian outback.

    Speaking in homophones, she describes the quirky animal behavior she sees. There's the MOOSE who loved MOUSSE and ATE EIGHT bowls, and the WHALE who was ALLOWED to WAIL ALOUD--and that's just for starters.This playful picture book introduces children to the richness of language through the concept of homophones. A romp through the zoo has never been so eye-opening.A Children's Book-of-the-Month Club Selection

    While his mate is off swimming in the ocean and catching loads of fish, he stands around in the freezing cold with an egg on his feet for two whole months, keeping it warm and waiting for it to hatch. This charming, oversize picture book is full of fabulous facts about nature’s most devoted dad.

    Simple, rhyming text and colorful cartoon cats help children expand their vocabularies and gain an appreciation for the rhythm of language in this lighthearted book of rhyming verse. Adjectives like frilly, silly, polka-dotted, fizzy, and spunky are printed in color, and all the words will tickle you pink!

    Is there enough time? You have 3 shirts and 2 pairs of pants. Can you make 1 good outfit? Then you start to wonder: Why does everything have to be such a problem? Why do 2 apples always have to be added to 5 oranges? Why do 4 kids always have to divide 12 marbles? Why can't you just keep 10 cookies without someone taking 3 away? Why? Because you're the victim of a Math Curse. That's why. But don't despair. This is one girl's story of how that curse can be broken.

    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.

    Explains how fossils are formed and what they tell us about the past.

    Each clever equation is a tiny, perfect poem that prompts readers to look at the ordinary and see the miraculous. Can you look at an egg in a nest and see a jewelry box? How are sunlight and heat like an alarm clock? Engaging sidebars reveal the science behind the signs of spring.

    A Caldecott medalist and a Newbery Honor-winning poet celebrate the beauty and value of spirals.What makes the tiny snail shell so beautiful? Why does that shape occur in nature over and over againbut also celebrate the beauty and usefulness of this fascinating shape.

    You can also find out what happens to water after it travels through a tree's roots, branches, and leaves, and how to figure out a tree's age.Clyde Robert Bulla's simple and concise text and Stacey Schuett's lush illustrations follow a tree's continuous life cycle through spring, summer, winter, and fall.

    Arthur is unhappy about going on vacation with his family, but he shows them how to make the best of a bad situation when they end up stuck in a motel because of rain.