Books published by publisher Charlesbridge Publishing

Join Sir Cumference, Lady Di of Ameter, and their son Radius for wordplay, puns, and problem solving in this geometry-packed math adventure. 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.

For fans of the Sir Cumference series with Pi on their mind, here is the second installment in this fun look at math and language. This time the math adventure is centered around a potion that changes Sir Cumference into a fire-breathing dragon. Can Radius change him back? Join Radius on his quest through the castle to solve a riddle that will reveal the cure. It lies in discovering the magic number that is the same for all circles. Perfect for parent and teachers who are looking to make math fun and accessible for everyone.

When Dad takes Leo to visit the doctor, Leo learns to wait his turn, sit quietly while his eyes and ears are checked, and be brave during a shot. And, of course, Leo gets a book before he leaves! Little brother Leo was first introduced through the best-selling Lola Reads series in Lola Reads to Leo. In 2014, Leo made his debut with his own adventure, Leo Loves Baby Time, followed by 2016's Leo Can Swim. This spin-off of the best-selling Lola Reads series is perfect for babies and toddlers.

For fans of all things that go this noisy alphabet book explores construction equipment from A to Z. Find out about these construction machines and more, from a huge saw that cuts through roads to a massive vacuum that sucks up boulders. You'll even learn a quick and easy recipe for concrete. Rock crushers, jackhammers, and wrecking balls will delight the youngest of readers learning their ABCs. Jerry Pallotta's trademark humor punctuates the informative text. Vibrant oil paintings bring to life a busy construction site.

Sarah Jane Hartwell is back with a whole new grade-school challenge: a class trip to the zoo. After the stress of her last attempt at taking her class on a field trip (seen in First Year Letters), Mrs. Hartwell has a plan for an upcoming trip to the zoo—a plan that includes lots and lots of rules. Armed with her foolproof field-trip tips, she's determined that absolutely nothing will go wrong. Sure enough, her students prove that they can line up straight, walk quietly, and take plenty of notes—but everyone soon realizes that the hotly-anticipated trip is becoming a letdown. Can Mrs. Hartwell save the day from herself?

A brother and sister's search for a new life and new home . . .5,000 years ago in ancient Mesopotamia during a terrible drought, Jomar and Zefa's father must send his children away to the city of Ur because he can no longer feed them. At fourteen, Jomar is old enough to apprentice with Sidah, a master goldsmith for the temple of the moongod, but there is no place for Zefa in Sidah's household. Zefa, a talented but untrained musician, is forced to play her music and sing for alms on the streets of Ur. Marjorie Cowley vividly imagines the intrigues, and harsh struggle for survival in ancient Mesopotamia.

Vacation--no homework, no school, and no more teacher’s dirty looks! Unfortunately, it usually begins with the family sitting around somewhere or stuck in a plane, train, or car. BOR-IIIING! Fortunately, with these quizzes, puzzles, games, and doodles, the fun doesn’t have to wait, even if you do. And you can do them anywhere—no electricity needed—with just a pencil. Fill in travel quotes, writing in the name of anyone who says one of the phrases on the page—like "I have to go to the bathroom" or "I think we’re lost." Play gomoku, a two-person game that’s similar to tic-tac-toe. Plan the ultimate vacation—a week anywhere in the world. Draw creepy critters, try tongue-tripping-twisters, and unscramble anagrams. It’s all so entertaining that no one will ask the dreaded question: Are we there yet?

Join our rambunctious teapot as he gets all steamed up just waiting to share his imaginative adventures with you. Grab your coat as you sail down the river on a boat to China, run off to Mexico to fight a bull, race with the hounds on a fox hunt, and hide deep in the jungle where no one will find you.I'M A LITTLE TEAPOT is a book to share with friends and family—after all, isn't that what "Tea-Time" is all about?

Ahoy, mateys! Get on board! Boats and the need for them have been around for thousands of years. Reed boats might have been the first boat ever to be built. The Vikings built wooden ships that were strong and ornate. And now boats like an Aircraft Carrier house 6,000 people and can carry over 100 planes. In Jerry Pallotta's newest book we get to see an entire alphabet of floating wonders. David Biedrzycki has provided dramatic settings for a variety of boats and captures the mood of each body of water. In one he paints a calm lake where a red canoe glides across the water and in another the stormy swells of an angry ocean tossing a three-masted Xebec. The facts about each boat are sprinkled with traditional Pallotta humor.

Readers will put their division skills to use in this clever math adventure follow-up to THE MULTIPLYING MENACE. After being banished to the Abyss of Zero, Rumpelstiltskin is back, and he’s stirring up more trouble than ever. Together with his sidekick, a witch named Matilda, Rumpelstiltskin plots his revenge on Peter and uses his magical powers to divide the kingdom into frogs. Peter and his dog, Zero, must locate the Great Multiplier and find a solution that will break the Great Divide before Rumpelstiltskin has a chance to combine the two mighty math sticks. Can Peter once again save the kingdom in time, or will it meet a green and warty fate?Young readers will learn all about dividing by whole numbers and fractions, as well as division rules for equations involving zero, all while follow Peter and Zero on another adventure. A perfect mix of math, fairy-tale, and fun, THE MULTIPLYING MENANCE DIVIDES will get STEM/STEAM readers excited to solve each puzzle one number at a time.