Books in Charlesbridge Math Adventures series

Crack the case with George Cornelius Factor in this entertaining math adventure that introduces simplified and reduced fractions with equal parts intrigue and humor. When a valuable fraction goes missing, George Cornelius Factor (a.k.a. GCF) vows to track it down. Knowing that the villainous Dr. Brok likes to disguise his ill-gotten fractions, GCF invents a Reducer—half ray gun, half calculator— that strips away the disguise, reducing the fraction to its lowest common denominator and revealing its true form. With the Reducer in hand, George seeks out Dr. Brok in hopes of retrieving the missing fraction. Back matter includes more detail on simplifying, or reducing, fractions.

Join Zero on his math adventure as he discovers his place through multiplication. Zero is lonely in Digitaria. He can't play Addemup with the other numbers because he has nothing to add. All the other numbers seem to belong and they all have a place, but when zero discovers multiplication he thinks he might have a place there. He sets out to find King Multiplus who also is curious about what will happen when Zero gets thrown in the mix. With math and wordplay A Place for Zero is the perfect introduction to multiplication and number placement. A playful way to make math less intimidating and more fun to explore.

Children can test their math skills and learn the Pythagorean Theorem alongside young Pythagoras in this STEM adventure. Pythagoras’ curiosity takes him from Samos to Alexandria, where he meets a builder named Neferheperhersekeper, who introduces him to the right angle. While building, Pythagoras uses geometry to learn how to measure angles and discovers all he needs to know about right triangles. With playful puns and wordplay Ellis creates the perfect STEM/STEAM resource for introducing young readers to a fundamental mathematical equation. A fun and accessible way to get young minds asking “what’s your angle?”.

Mouse and her friends want to play tug-of-war, but they’ll need to use some everyday math to figure out how to make teams that are equal. As Mouse looks at various solutions she is not sure what it means to be equal. Nothing works until Mouse starts to think about it mathematically and divides the teams based on weight. Wonderful illustrations capture Mouse and her animal friends from whiskers to tails as they work to measure and equalize their teams based on size, weight, and effort. A perfect addition to any STEM/STEAM collection that shows readers how math can be used in everyday problem solving.

Readers will put their multiplication skills to use in this clever math adaptation starring the fairy-tale favorite, Rumpelstiltskin. It's been 10 years since the queen defeated Rumpelstiltskin and now he's back to collect his payment from years before. He causes a stir in the kingdom by making mischief with his multiplying stick and threatens to do far worse if the debt is not repaid. It's up to Peter, the young prince, to take possession of the Rumpelstiltskin’s magical multiplying stick and learn how to use it—and multiply both whole numbers and fractions-- in order to restore peace to the kingdom. A perfect mix of math, fairy-tale, and fun, The Multiplying Menace will get STEM/STEAM readers excited to solve the adventure one number at a time.

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.

Julie Ellis and Phyllis Hornung Peacock team up once again to explore Pythagorean ratios in this humorous sequel to WHAT'S YOUR ANGLE, PYTHAGORAS?Pythagoras and his cousins want to win a music contest, but first they must figure out how to play their instruments in tune, something that's never been done before.While trying to fix the problem, Pythagoras makes an important discovery--notes that sound pleasant together have a certain mathematical relationship. When Pythagoras applies this ratio to his cousins' pipes and lyres, the result is music to the ears.

What are the odds?Ethan wakes up one morning to find a very strange cat stuck on his head. The cat, Odds, refuses to budge until Ethan wins a game of probability. Without looking, Ethan must pick out a dime from his coin collection or two matching socks from his dresser, or do something else improbable. If he doesn't, Odds is there to stay, and Ethan has a 100% chance of missing his big soccer game.A very improbable story about a challenging math concept.

Friday is Zachary Zormer's favorite day of the week. At least it is until he realizes he forgot this week's assignment, "Bring in something fun to measure." Tyler, the class show-off, brings a picture of himself from the newspaper. How can Zack top that when all he has to work with is a piece of paper he finds in his pocket? Week after week Zack takes on a different math concept (length, width, area, perimeter) with surprising projects including a mobius strip, a paper frame large enough to step through, and a light show that demonstrates how the sun heats the earth.