Built in MMVIII. Roman numerals are everywhere---on clocks, in books, and on buildings. But what do Roman numerals mean, and how does one use them? Fun with Roman Numerals is a straightforward and appealing introduction to a timely topic. On a scale of I to X, it's an XI!

    A reward of one grain of rice doubles day by day into millions of grains of rice when a selfish raja is outwitted by a clever village girl.

    Soon the royal granaries are almost empty--will the proud king concede that he has been outwitted? A Notable Children's Trade Book in the Field of Social Studies and Outstanding Science Trade Book for Children. Full-color illustrations.

    Never fear, I have a hunchThere is a match for every bunch!"Greg Tang, a lifelong lover of math, shares the techniques that have helped him solve problems in the most creative ways! Harry Briggs's vibrant & inviting illustrations create a perfect environment for these innovative games. So open your mind-and have fun!"This...clever math book uses rhyming couplets... riddles...visual clues to help the reader find new ways to group numbers for quick counting...A winning addition!" --Kirkus

    Delighted with his new career opportunities--as a TV screen and a picture frame--he decides the more angles the better, until an accident teaches him a lesson. Includes special teaching section. Full color.

    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.

    Higgins as he dashes from hall--'twenty minutes past four'--up to attic--'twenty-three minutes past four'--down two flights to kitchen--'twenty-five minutes past four'--and up one to bedroom--'twenty-six minutes past four.'"--Kirkus Reviews, pointered review. Full color.

    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.

    S. of A. States all over the country were waking up, having their first cups of coffee, reading the morning paper, and enjoying the beautiful sunrise.All the states, that is, except for Kansas."At the first annual "states party," Virginia and Idaho hatch a plan to swap spots so each can see another part of the country. Before the party is over, all the states decide to switch places. In the beginning, every state is happy in its new location. But soon things start to go wrong. Will the states ever unscramble themselves and return to their proper places?Packed with madcap humor and whimsical illustrations, this quirky story-starring all fifty states-is chock-full of introductory facts and silly antics that will make learning geography as much fun as taking a vacation.

    . . thanks to some help from their cranky teacher, a little bit of logic, and a lot of amusing misadventure.Yes, Rufus wrote CAIUS IS A DUMBBELL on his tablet at school, but no, he did not break into the schoolroom, did not tie up his teacher, and certainly did not paint his slur about Caius on the Temple of Minerva (even if it is in Rufus's own handwriting). Rufus is doomed unless his six classmates can find out who is really responsible. Every hour seems to bring a new, confusing clue . . . until the boys finally stumble upon someone who is not what he appears to be.

    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.

    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?

    . . until they take so long that the picnic is gone!

    Ruth Heller's prose and pictures are the perfect means for discovering the variety of oviparous animals and their unique ways of laying eggs.

    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.