The author and illustrator of the best-selling Words Are CATegorical(R) series use their trademark sense of humor to add up the fun!

    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!

    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.

    A boy and his dog present amusing counting, size comparison, and mathematical facts.

    And, it's true, many of them do. But Paul Erdos never followed the usual path. At the age of four, he could ask you when you were born and then calculate the number of seconds you had been alive in his head. But he didn't learn to butter his own bread until he turned twenty. Instead, he traveled around the world, from one mathematician to the next, collaborating on an astonishing number of publications. With a simple, lyrical text and richly layered illustrations, this is a beautiful introduction to the world of math and a fascinating look at the unique character traits that made "Uncle Paul" a great man.

    Each ring of the doorbell brings more friends to share the delicious cookies Ma has made in this beloved classic.This enjoyable read-aloud picture book about friendship, sharing, and cookies can also be used to introduce basic math concepts to young children.The Doorbell Rang was named a Notable Book for Children by the American Library Association.

    Soon he's joined by two cats, then three frogs, then four turtles, then five fish. But one group by one, his new friends decide to head home, leaving the rooster alone again -- and ready to return to his own comfortable home as well. Bold, colorful collage illustrations, a beguiling story, and a simple introduction to number sets, addition, and subtraction combine to make Rooster's Off to See the World a delight for Eric Carle's many young fans.

    Can Peter unlock the secret of the stick in time to save the kingdom? Whimsical illustrations bring fun to multiplying whole numbers and fractions.

    Symmetry is when one shape looks the same if you flip, slide, or turn it. It's in words and even letters. It's in both nature and man-made things. In fact, art, design, decoration, and architecture are full of it. This clear and concise book explains different types of symmetry and shows you how to make your own symmetrical masterpieces. Notes and glossary are included.

    "How many seeds are in a pumpkin?" Mr. Tiffin asks his class as they gather around the big, medium, and small pumpkins on his desk. Robert, the biggest kid, guesses that the largest one has a million seeds; Elinor, sounding like she knows what she's talking about, guesses the medium one has 500 seeds; and Anna, who likes even numbers better than odd ones, guesses that the little one has 22. Charlie, the smallest boy in the class, doesn't have a guess. Counting pumpkin seeds is messy business, but once the slimy job is done... well, you'll have to read and find out!

    Throughout the day, she welcomes a cast of hilarious characters, from a duchess to a dog trainer, until all the rooms are taken. It’s a full house! But in the middle of the night, Miss Bloom realizes that something is just not right — and sure enough, downstairs the guests are eating her cake. Readers will be happily inspired to do the math and discover that one delicious cake divided by five hungry guests and one hospitable hostess equals a perfect midnight snack at the Strawberry Inn.

    At first they’re cute, but with every passing day, the penguins pile up—along with the family’s problems. Feeding, cleaning, and housing the penguins becomes a monumental task. They’re noisy and smelly, and they always hog the bathroom! And who on earth is sending these kwaking critters? In a large format, and with lots of opportunity for counting, 365 Penguins is sure to become a perennial wintertime favorite.

    There were so many things that he could do with all of that money! He could buy as much gum as he wanted, or even a walkie-talkie, if he saved enough. But somehow the money began to disappear... Readers of all ages will be delighted by this attractive new edition of Judith Viorst's beloved picture book.

    Dynamic illustrations combine with simple yet challenging questions to stimulate young learners to move beyond simple counting to more complex mathematical tasks. Full color.

    Word on the street is that 7 ate 9. If that's true, 6's days are numbered. Lucky for him, Private I is on the case. But the facts just don't add up.It's odd.Will Private I put two and two together and solve the problem . . . or is 6 next in line to be subtracted?