Friend Of Numbers

Age range 6+ A toddler captivated by patterns...A little boy filling his slate with numbers, rubbing them out with his elbow and starting again...A teenager solving complex maths problems...A young man matching the best minds in Cambridge. Bringing the story of brilliant mathematician Srinivasa Ramanujan to children, this book follows his singular fascination with numbers!

This selection of expository essays by Paulo Ribenboim should be of interest to mathematicians from all walks. Ribenboim, a highly praised author of several popular titles, writes each essay in a light and humorous language without secrets, making them thoroughly accessible to everyone with an interest in numbers. This new collection includes essays on Fibonacci numbers, prime numbers, Bernoulli numbers, and historical presentations of the main problems pertaining to elementary number theory, such as Kummers work on Fermat's last theorem.

This workbook for students changes what is often a painful "drill and kill" memorizing process into an opportunity to build a rich network of connections, patterns, thinking strategies and applications. Acquiring a solid knowledge of basic multiplication facts becomes a way to experience math as a thinking activity. In the process, students develop number-sense and discover the rich interaction of factors, prime factors, Greatest Common Factors, Least Common Multiples, preparing them for a smooth transition to fractions and algebra.

A memorable, inspiring introduction to a groundbreaking figure in STEM history. Growing up in southern India during British rule, Srinivasa Ramanujan was fascinated by numbers: they made patterns only he could see. Soon he spent as much time as he could in the world of mathematics, exploring concepts and trying to publish his ideas. In 1914, twenty-six-year-old Ramanujan sailed to England to work with the acclaimed mathematician G.H. Hardy. Cambridge University was so different from home, but Ramanujan’s love of numbers kept him going. He had big questions to ask—and important discoveries to make! This captivating biography follows the short but brilliant life of a man recognized as a genius in his time and our own. With bright, occasionally amusing art and compelling back matter, Friend of Numbers is an unforgettable portrait of one of history’s most incredible mathematical minds.

"A funny, marvelously readable portrait of one of the most brilliant and eccentric men in history." --The Seattle Times Paul Erdos was an amazing and prolific mathematician whose life as a world-wandering numerical nomad was legendary. He published almost 1500 scholarly papers before his death in 1996, and he probably thought more about math problems than anyone in history. Like a traveling salesman offering his thoughts as wares, Erdos would show up on the doorstep of one mathematician or another and announce, "My brain is open." After working through a problem, he'd move on to the next place, the next solution. Hoffman's book, like Sylvia Nasar's biography of John Nash, A Beautiful Mind, reveals a genius's life that transcended the merely quirky. But Erdos's brand of madness was joyful, unlike Nash's despairing schizophrenia. Erdos never tried to dilute his obsessive passion for numbers with ordinary emotional interactions, thus avoiding hurting the people around him, as Nash did. Oliver Sacks writes of Erdos: "A mathematical genius of the first order, Paul Erdos was totally obsessed with his subject--he thought and wrote mathematics for nineteen hours a day until the day he died. He traveled constantly, living out of a plastic bag, and had no interest in food, sex, companionship, art--all that is usually indispensable to a human life." The Man Who Loved Only Numbers is easy to love, despite his strangeness. It's hard not to have affection for someone who referred to children as "epsilons," from the Greek letter used to represent small quantities in mathematics; a man whose epitaph for himself read, "Finally I am becoming stupider no more"; and whose only really necessary tool to do his work was a quiet and open mind. Hoffman, who followed and spoke with Erdos over the last 10 years of his life, introduces us to an undeniably odd, yet pure and joyful, man who loved numbers more than he loved God--whom he referred to as SF, for Supreme Fascist. He was often misunderstood, and he certainly annoyed people sometimes, but Paul Erdos is no doubt missed. --Therese Littleton

In this title, students will learn all about mixed numbers and how to better understand them with the visually enhanced text and question/answer sections.

A full colour, rhyming BOARD BOOK story with die-cut tabs, in which Barney demonstrates how to count up to ten as he meets each of the cartoon character numbers in turn.