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.

    The Queen has everything, everything except a bed. The trouble is that no one in the Kingdom knows the answer to a very important question: How Big is a Bed? because beds at the time had not yet been invented. The Queen's birthday is only a few days away. How can they figure out what size the bed should be?

    But how do you count zero, a number that is best defined by what it's not?Can you see it?Can you hear it?Can you feel it?This important math concept is beautifully explored in a way that will inspire children to find zero everywhere--from the branches of a tree by day to the vast, starry sky by night.

    When a hungry nightingale threatens to eat him for breakfast unless he can measure her song, the inchworm calls on his craft and skill to creatively solve the dilemma.

    we must be counting by feet! Children will love this hilariously illustrated introduction to simple counting and multiplication with big feet and small - on people and spiders, dogs and insects, snails and crabs - from one to one hundred!

    From Donald Crews, the Caldecott Honor artist and award-winning creator of Truck, Freight Train, and many other classic picture books for young children, this picture book is a fun introduction to basic math concepts.What can you do with ten black dots?One dot can make a sun, two dots can make the eyes of a fox, and three dots can make a snowman's face.And that's just the beginning in this unique counting book! Children will develop visual learning skills, explore creativity, and practice counting numbers, all in one deceptively simple—and fun!—picture book.A proven favorite at home and in the preschool classroom.

    A publishing event!"If you decide to go to the moon," writes Faith McNulty, "read this book first. It will tell you how to get there and what to do after you land. The most important part tells you how to get home.Written in the second person, the text allows the reader to participate in every aspect of the journey, from packing ("don't forget your diary and plenty of food") to liftoff (at first you'll feel heavy; don't worry") to traveling through space (where "the moon glows like a pearl in the black, black sky"). The reader lands at the Sea of Tranquility, the site of the first lunar landing.

    Change just adds up with this bankable book illustrated with real money. Counting, adding, and identifying American currency from one penny to one dollar is exciting and easy. When you have counted all your money, you can decide to save it or spend it.

    Huge numbers are hard to comprehend. This book explains quantities in terms children can understand. For example, one million dollars could buy two full pizzas a day for more than sixty-eight years.

    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.

    Each shape has two spreads. Full color.

    New lengths bring new fractions to conquer, but the worms prove equal to every challenge, triumphantly munching their way through this delicious tale of math and measuring. Children and teachers alike will cheer this entertaining visual demonstration of a confusing math concept.

    The engaging “What if?” format of this informational picture book is sure to delight five– to seven– year– olds.Each of the four books in the Math in Nature series will cover one season of the year and one area of the math curriculum. Colorful, cut– paper collage art uniquely evokes the natural world, while two levels of text — one a lyrical story, the other asking children to problem– solve — bring the reader to a full understanding of the math concept being covered.

    Round, curvy, pointy, or straight-shapes are all around us.With vibrant illustrations that highlight shapes in all their forms, this informative book reinforces the identification of circles, squares, crescents, diamonds, triangles, rectangles, trapezoids, and ovals while encouraging kids to pair shapes together to make new forms.

    As we dream with him, we are taken further and further into mathematical theory, where ideas eventually take flight, until everyone--from those who fumble over fractions to those who solve complex equations in their heads--winds up marveling at what numbers can do.Hans Magnus Enzensberger is a true polymath, the kind of superb intellectual who loves thinking and marshals all of his charm and wit to share his passions with the world. In The Number Devil, he brings together the surreal logic of Alice in Wonderland and the existential geometry of Flatland with the kind of math everyone would love, if only they had a number devil to teach them.