A perfect introduction to mathematical concepts for young readers, written by a Newbery honor-winning author!This colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference, is just right for budding mathematicians, scientists, historians, and librarians! Filled with fascinating details about Eratosthenes's world (and in print since 1994), kids are sure to flip through the pages time and again.

    "How long is a second?""A second is a hiccup--the time it takes to kiss your mom, or jump a rope, or turn around."The newest book by acclaimed picture-book creators Hazel Hutchins and Kady McDonald Denton explains units of time in imaginative terms children can understand: A second lasts as long as a hiccup; a week is seven sleeps; and a year is the time it takes to grown into new shoes! Any parent who's been asked, "How long is a minute?" or any kid who's wondered, "What does 'an hour' mean?" will enjoy this smart, simple, and surprising book.

    Along the way, the children encounter all sorts of animals including elephants, lions and monkeys, while counting from one to ten in both English and Swahili. The lively, rhyming text is accompanied by an illustrated guide to counting in Swahili, a map, notes about each of the animals, and interesting facts about Tanzania and the Maasai people. A portion of the proceeds from the sale of each book will be donated to the African Wildlife Foundation, to aid their wildlife conservation and community building efforts in Tanzania. (Softcover) 32pp;10.25 x 10 inches

    Here are 12 "hypotheses," as well as lists of "what you need," "what to do," and "what happened" that are sure to make young readers laugh out loud as they learn how to conduct science experiments (really!). Jenny Offill and Nancy Carpenter—the ingenious pair that brought you 17 Things I'm Not Allowed to Do Anymore—have outdone themselves in this brilliant and outrageously funny book.

    For some, it's music. For others, it's art. For our heroine, it's math. When she looks around the world, she sees math in all the beautiful things: the concentric circles a stone makes in a lake, the curve of a slide, the geometric shapes in the playground. Others don't understand her passion, but she doesn't mind. There are infinite ways to see the world. And through math is one of them.This book is a gorgeous ode to something vital but rarely celebrated. In the eyes of this little girl, math takes its place alongside painting, drawing and song as a way to ponder the beauty of the world.

    Yet contrary to popular belief, George Washington never had a set of wooden teeth. Starting at the age of twenty-four, he lost on average a tooth a year, and by the time he was elected President, he had only two left! In this reverentially funny tale based on Washington’s letters, diaries, and other historical records, readers will find out what really happened as they follow the trail of lost teeth to complete tooflessness.

    But the dot, though perfect in every way, only had eyes for a wild and unkempt squiggle. All of the line's romantic dreams were in vain, until he discovered...angles! Now, with newfound self-expression, he can be anything he wants to be--a square, a triangle, a parallelogram....And that's just the beginning!First published in 1963 and made into an Academy Award-winning animated short film, here is a supremely witty love story with a twist that reveals profound truths about relationships--both human and mathematical--sure to tickle lovers of all ages.

    In this book, readers will discover the plants and animals that make up the rich, interconnected ecosystem of a mountain pond. Over the pond, the water is a mirror, reflecting the sky. But under the pond is a hidden world of minnows darting, beavers diving, tadpoles growing. These and many other secrets are waiting to be discovered...over and under the pond.

    even if you don't have sparkles.Thelma dreams of being a glamorous unicorn. Then in a rare pink and glitter-filled moment of fate, Thelma's wish comes true.She rises to instant international stardom, but at an unexpected cost. After a while, Thelma realizes that she was happier as her ordinary, sparkle-free self. So she ditches her horn, scrubs off her sparkles, and returns home, where her best friend is waiting for her with a hug.From award-winning author Aaron Blabey comes this joyful book about learning to love who you are...even if you don't have sparkles

    Jimmy's boa constrictor wreaks havoc on the class trip to a farm.

    series!If you take a mouse to the movies, he'll ask you for some popcorn. If you give him the popcorn, he'll want to string it all together. Then he'll want to hang it on a Christmas tree.The famous little mouse from If You Give a Mouse a Cookie that has delighted millions of readers is back in an irresistible tale full of holiday antics.Collect all the books in this giggle-inspiring classic series!

    A cumulative rhyme relating how Ki-pat brought rain to the drought-stricken Kapiti Plain. Verna Aardema has brought the original story closer to the English nursery rhyme by putting in a cumulative refrain and giving the tale the rhythm of “The House That Jack Built.”

    Zip. Zilch. Nada. That's what all the other numbers think of Zero. He doesn't add anything in addition. He's of no use in division. And don't even ask what he does in multiplication. (Hint: Poof!) But Zero knows he's worth a lot, and when the other numbers get into trouble, he swoops in to prove that his talents are innumerable.

    Seuss. In Sam and the Firefly, P. D. Eastman (author of Are You My Mother? and Go, Dog. Go!) introduces us to the dynamic duo of Sam and Gus, who soar through the air writing words in the night sky. But when Gus’s words end up causing confusion and chaos for the people on the ground, it’s up to Sam to help Gus “write” his wrongs. Originally created by Dr. Seuss, Beginner Books encourage children to read all by themselves, with simple words and illustrations that give clues to their meaning."...provides interest, suspense and word repetition. Illustrations excellent. Recommended."--(starred) School Library Journal.

    First published to wide acclaim in 2002, this eye-opening book has since become a classic, promoting "world-mindedness" by imagining the world's population -- all 6.8 billion of us -- as a village of just 100 people. Now, If the World Were a Village has been newly revised with updated statistics, several new activities and completely new material on food security, energy and health. By exploring the lives of the 100 villagers, children will discover that life in other nations is often very different from their own. If the World Were a Village is part of CitizenKid: A collection of books that inform children about the world and inspire them to be better global citizens.