Wide World Publishing

Do the math!

math challenges to exercise your mind

by Theoni Pappas


Kick start your brain with Do the math!

math challenges that will exercise those gray cells. Whether it's a computation problem, problems involving advanced equations or challenges that use plain old logic, you'll have to use to math.


Problems are provocative and engage your curiosity. The challenges cover a range of math problems, which will tantalize, challenge and amuse you. Sometimes math skills will help you solve them, other times you may rely on logic.


Do the math! is designed so that if you get stuck, you can turn to its HINT section.


Each challenge also comes with an in-depth solution, found in the SOLUTION section.


Problem solving fuels imagination and creativity. These 99 challenges will stimulate your brain, challenge your wits and increase your confidence. Solving or understanding the solutions will both increase your confidence and understanding of math. With each solution you will experience a sense of accomplishment. The challenges that you don't solve will perhaps provide new insights on how to approach various problems. By the end of Do the math! you will have enhanced your mathematical tool kit.


ISBN: 1-884550-74-4 · $12.95

· 4.5"x6" · 242 pages · color illustrations on every page




the mathematical cat

by Theoni Pappas


Pappas is a highly respected and nationally recognized author of books on mathematics for the layperson and the mathematician. She simplifies mathematical concepts and makes math more understandable and approachable. In addition she has a superb track record with her books on mathematics for children.




The famous mathematical cat Penrose takes us on a trip though puzzleland, while sharing fascinating and challenging puzzles in this uniquely designed mini book. Each page's puzzle is introduced by our star Penrose or one of his quirky friends. Readers are treated to page after page of Penrose antics and problems, while the over 100 mind teasers stimulate and engage its readers gray cells, This book's mini format and fun graphics makes it hard to resist picking up, and its characters and puzzles are sure to entertain both kids or adults.


· $10.95 ·160 pages ·4.25"x5.5"

·paperback · index ·illustrations

· ISBN: 978-1-884550-70-6

color throughtout

papewrback: ISBN: 978-1-884550-70-6

ebook: ISBN: 978-1884550-71-3



Other People Too!

by Theoni Pappas


"Pick a page, any page, and let the fun begin! Theoni Pappas's choice of stories, puzzles, and games is delightful, challenging, and timeless."

—Jackie Faillace Getgood,

Mathematics Teaching in the Middle School, NCTM magazine



A book that brings mathematics to life in stories, puzzles and challenges.

Here we find:

• how the fractions were squeezed between the whole numbers

• witness the rise and fall of the Roman numerals

ª do mental gymnastics with intriguing puzzles

• challenge a friend to a special game

• help factorials cut things down to size

• discover what's a zillion

• learn the magic of binary cards

• and much much more


• Helps kids find out that mathematics is more than just computation.

• Lets them discover the world of mathematics.-


$10.95 · 8'x10"

· illustrations throughout

· 128 pp · ISBN: 1-884550-13-4



the mathematical cat



the mathematical cat


by Theoni Pappas


Penrose, no ordinary cat, takes kids on adventurous tours of mathematical concepts and characters with his books.


Join Penrose as he continues on his mad cap tour of mathematical ideas.


Venture with him when he:

 • discovers how to help the square root of 2

 • Meets the fractal dragon

• Watches a tangram egg hatch

• learns how to make a square become a bird

• helps nanocat get back home

and MANY more amusing, entertaining and informative tales,




• discover the mathematical rep-tiles

• meet x, the mathematical actor

• meet Probably

• discover how 1+1 does not always =2.

• help Sorry Snowflake find its symmetry

• take on Napier's hot rods

and MANY more amusing, entertaining and informative tales


All told in an enchanting and captivating style that is sure to make mathematics fun as well as educational. The reader will gain new insights and appreciation for mathematics and its many facets.



"Students will find the stories interesting and will be challenged by the suggested activities and questions. useful as motivational stories and extensions of their lesson. This book will help teachers develop a better understanding of skills and concepts and to motivate students to really like mathematics."

­—Shirley Roberts, Teaching Children Mathematics




$12.95 · 8'x10"

· illustrations throughout

· 114 pages ISBN: 1-884550-14-2




$12.95 · 8'x10"

· illustrations throughout

· 128 pages ISBN: 1-884550-32-0



MORE MATH ADVENTURES with PENROSE the mathematical cat


by Theoni Pappas


More math adventures with Penrose the mathematical cat brings the world of mathematics to life with amusing, fascinating, and exciting stories.  Penrose proved his math prowess in Pappas’s first two Penrose books. Now Penrose, the famous mathematically minded cat, is at it again.  Join Penrose on  all new math  adventures as he introduces math concepts in a non-threatening way.

Here we find Penrose

• running into the confusing numbers

• heading into Poincareville

• learning about squares & lines

 •discovering perfect numbers

• inventing cat numbers

•setting plus straight

• finding math knots

•helping circ;e find its center

and many more math stories & challenges


His encounters with math characters and ideas capture children’s imaginations and stimulates their curiosity while having fun discovering and playing with what the world mathematics offers. Lets you discover that math is much more than learning math facts. A great resource for parents and teachers. An exciting way to get children fascinated by mathematics.


$12.95 · 8'x10"

· illustrations throughout

· 132 pages ISBN: 978-1-884550-76-8




by Theoni Pappas


A treasure trove of stories that make mathematical ideas come to life. Explores math concepts and topics such as real numbers, exponents, dimensions, the golden rectangle in both serious and humorous ways. Penrose the cat, the parable of p, the number line that fell apart, Leonhard the magic turtle and many others offer an amusing and entertaining way to explore and share mathematical ideas regardless of age or background.


for Best Children's Book

by The Educational Source


"For those you love math, for those indifferent to it, and for those who absolutely dread and fear it, this latest volume by the author of The Joy of Mathematics is an entertaining way to explore the world of numbers regardless of age or background." ­ —Bookpaper


· $12.95 ·10"x8"

· illustrations throughout

· 64 pp ISBN: ISBN:0933174-89-6 ·




by Theoni Pappas & Dale Lindley

Kick start your brain with MATHCHALLENGES.  99 challenges that will exercise those gray cells. Whether it's a computation problem, a thought challenge, problems involving advanced equations or just challenges that use  plain old logic, you'll have to resort to mathematical thinking.  Remember mathematics is an active sport. A pencil, paper and perhaps a calculator are your tools. The challenges cover a range of math problems, which may both challenge and amuse you. Sometimes math skills will help you solve them, other times you may rely only on logic.


MATHCHALLENGES  is designed so that you can tackle only one mathematical challenge in a twenty-four hour period. During that time, if you get stuck, you can ask for a hint.  Or, if you are frustrated, you can always look at the solution, but you cannot go to the next challenge until a day has passed.  Why?  Because for some challenges our minds may need time to process the information and seek out that 'aha' moment.  Some math challenges need time to percolate in our minds.  So to remove the temptation of rushing to know the answer, the 24 hour rule lets us mull over the problem, and even, perhaps, come up with alternate ways to solve it.  A hint can be accessed for a challenge in case you need a boost, and when you do check your answer, an in-depth solution is given which may afford new insights.


Problem solving fuels imagination and creativity. These 99 challenges will stimulate your brain, challenge your wits and increase your confidence. Solving or understanding the solutions will both increase your confidence and understanding of math, and with each solution you will experience a sense of accomplishment. The challenges that you don't solve will perhaps provide new insights on how to approach various problems. By the end of these 99 challenges you will have enhanced your mathematical tool kit.


Now available at the Apple APP Store or through iTunes.  —FREE at the APPLE STORE




Exploring mathematical ideas

in small bites


by Theoni Pappas


From nutrional labels and box office statistics to terabytes and megapixels, the 21st century world is awash in numbers. How can the average Joe or Jane make sense of all that data? The key, Theoni Pappas argues is math. In Mathematical Snippets, she draws readers into the fascinating world of mathematics without overwhelming them with mind-numbing equations. Short engaging sections on everything from golf to game theory introduce mathematical concpets and celebrate math's impact on daily life.


Math Snippets lets you surfs through ideas until you are captivated by a topic. It's up to you to find out where your interest and curiosity take you.


$12.95 ·8.5"x5.5"·200 pp

color photos and illustrations throughout





NUMBERS & Other Math Ideas Come Alive

by Theoni Pappas


Humorous stories debunk math as cold or elitist and help readers zero in on math concepts


Numbers and concepts tell their stories in their own words in Numbers & Other Math Ideas Come Alive. Our cold, clinical impressions of mathematics dissolve as we are introduced to the adventures and antics of mathematical concepts. Numbers speak and interact with each other in delightful and amusing stories. The diverse range of math topics in story format make this book accessible, and readers learn from entertaining chapters such as, A Square Is Not So Square and The Day Numbers and Numerals Set the Record Straight also, find out how Math Tailors the Numbers. In each story, properties and characteristics of math ideas are uncovered and explained through the dialogues and actions of its math characters. Readers forget they're learning as they get caught up in the characters' private lives, secrets, and interactions.


"Numbers & Other Math Ideas Come Alive by Theoni Pappas is a fun look at numbers and shapes and their properties. Pappas personifies numbers and shapes, modeling their properties as they interact and explaining their point of view. Each chaper cover a different mathematical idea from the viewpoint of numbers or shapes, explaining concepts though experiences of characters. ... This book covers math concpets that are appropriate for both middle school and high school students. ... a fun and creative way to begin a discussion about new mathematical concepts and to pique the interests of students. A possible extention of this book is to have students write their own stories about mathematical concepts. ...This book is a great way to start that process with young mathematicians in our classrooms." ­

                  —The Mathematics Teacher magazine


• $10.95   • 5"x7"     • 190 pages

• ISBN: 978-1-884550-63-8




by Theoni Pappas


MATHEMATICAL JOURNEYS  explains and illustrates some of the secrets that math holds.. Learn how, when, and  where these mathematical ideas evolved and are heading. Each section explores a mathematical concept's origins and follows spin-offs of the idea. It ends with questions and problems and their solutions.


Delve into world of Fibonacci numbers, follow the path a point travels along a rotating wheel, explore new geometries… see how the mathematics behind these i math concepts touch many aspects of our lives.  MATHEMATICAL JOURNEYS is chock full of illustrations and photos that enhance ones understanding and scope of ideas discussed.

• Designed for self-learners, teachers, homeschoolers, distance learning, and anyone seeking to learn what mathematics is all about. 

• MATHEMATICAL JOURNEYS stimulates the left side of the brain while tantalizing the right side.

• Each topic includes questions, problems & solutions at the end of its section.

• The appendix suggests ways to share the ideas behind each topic, and directions to continue the journey's explorations.

• Explores ideas not always covered in the traditional classroom.  DIscover where and how these ideas evolved and where they appear and are connected to our lives.

Teachers or homeschoolers will find this book is an invaluable tool and the self-learner will experience adventures into exciting worlds of mathematics.


SBN–13:  978-1884550805 · $14.95

· 8"x10" ·144 pages · illustrations throughout




by Theoni Pappas



One of the first books to popularize mathematics.  Now a classic.


Mathematics is everywhere-in soap bubbles, electricity, da Vinci's masterpieces, even in an ocean wave. Contains a treasure trove of clearly illustrated mathematical ideas, concepts, puzzles, and games. Find out what a googol is, visit hotel infinity, read a thorny logic problem that stumped them back in the 8th century. THE JOY OF MATHEMATICS adds up to the most fun you've had in a long time.


Written in Pappas' unique & inviting style

Designed so that either book can be opened at random and a self-contained topic enjoyed.


"Approach goes far beyond the usual mechanical presentation, linking math to vital, everyday life and adding cultural and historical influences to connect math concepts to realistic challenges fun rather than tedious."

-The Bookwatch


"The Joy of Mathematics presents the world of mathematics to readers in a fresh, original way. For any reader, mathematician or not easily readable by all readily usable for enrichment I highly recommend it."

-The Mathematics Teacher


"Rarely does one come across books on mathematics with such breath, beauty, and insight. Pappas' books always contain fascinating and valuable information-not only for curious students and laypeople-but also for the seasoned researcher. The eclectic Pappas is both a mathematician and a poet, and with the cold logic of the one and the inspired vision of the other, she selects topics sure to stimulate readers' imagination and sense of wonder at the incredible vastness of our mathematics universe."

-Clifford A. Pickover,

author of Computers & the Imagination


" designed to help the reader become aware of the inseparable relationship of mathematics and the world by presenting glimpses and images of mathematics in the many facets of our lives." ­Science News

". . .helps demystify this often misunderstood subject randomly arranged topics retain the true essence of discovery test your wits with topo,a mathematical game; ponder the Trinity of Rings; or juggle with a frustrating puzzle-this book gives glimpses of the many places math exists, helping you discover some of its treasures."

-Curriculum Product Review



Pick-of -the-Paperbacks


· $12.95 · 8.5" by 5.5"

·photos & illustrations throughout

· 256 pages ISBN: 0-933174-65-9





by Theoni Pappas


Part of the joy of mathematics is that it is everywhere-in soap bubbles, electricity, da Vinci's masterpieces, even in an ocean wave. Written by the well-known mathematics teacher consultant, this two volume collection of over 500 clearly illustrated mathematical ideas, concepts, puzzles, and games shows where they turn up in the "real" world. You'll find out what a googol is, visit hotel infinity, read a thorny logic problem that was stumping them back in the 8th century. The two books are cross-indexed.


Now Pappas has done it again, or rather, has done more! The pages of MORE JOY of MATHEMATICS spill over with ideas, puzzles, games from all over the world, historic background, exciting graphics and up-to-the-minute math breakthroughs.


Readers will find plenty to enjoy as they discover Pappas' unique easy reading style.





· $1295 · 8.5" by 5.5"

·photos & illustrations throughout

· 312 pages ISBN: 0-933174-73-X




by Theoni Pappas


Delves into the world of ideas, explores the spell mathematics casts on our lives, and helps you discover mathematics where you least expect it. Be spellbound by the mathematical designs found in nature. Learn how knots may untie the mysteries of life. Be mesmerized by the computer revolution. Discover how the hidden forces of mathematics -hold architectural structures together -connect your telephone calls -help airplanes get off the ground - solve the mysteries of the living cell. See how some artists use a mathematical palette in their works and how many writers draw upon the wealth of its ideas. Experience all this in The Magic of Mathematics.


"Thought-provoking yet not overwhelming, this book makes the author's pleasure in mathematics evident. "

—Library Journal


"witty and intriguing" ­—Science News


"Readers will relish this book. The focus is to explain math in a lively, revealing manner. It succeeds!" ­ —The Bookwatch


"Pappas writes at a level that puts all her topics within reach of any mathematics teacher and usually within reach of a generalist as well. In spite of this, she does not skim over facts or misrepresent them. If you haven't bought Pappas' first two books, then get them. If you have them, buy this one as well."

­—The Mathematics Teacher


Like Pappas' The Joy of Mathematics, the illustrations, graphics and photographs in The Magic of Mathematics make the book a visual as well as an intellectual experience.




• $12.95 ·8.5"x5.5"

•photos & illustrations throughout

•324 pages ISBN:0933174-99-3



 MATH Talk

by Theoni Pappas


Creative juices were certainly at work when this book of mathematical dialogues was created by Theoni Pappas. It presents a new way to enjoy and learn mathematical ideas via poetic dialogues read by two people. A new twist to mathematical themes.


"MATH TALK in its novel approach would make an interesting addition to the mathematics library for any age group." The Mathematics Teacher



"Continuing on her crusade to demystify mathematics, Pappas delivers a new way to enjoy and learn some sublimely abstract notions" —The Bookpaper


"One of our favorites is an unusual little paperback called MATH TALK"  —Home Education Magazine



24 delightful and informative poetic dialogues for exploring math ideas.


· Mathematics · Circles · Proper fractions · Fractals

· Fibonacci numbers · One · Operations · Imaginary numbers

· Möbius strip · Zero · Squares · Operations

· Variables · Radicals · Triangles · · Primes · Dimensions

· Golden Mean · e, & i (for three voices)

· Integers · Tessellations · Even numbers

· Googols · We are numbers

• and more


$10.95  ·8.5"x5.5"

·72 pp





by Theoni Pappas


Why isn't there a Nobel Prize in Mathematics?

Why was the first woman mathematician murdered?

Was Einstein's wife the real brains behind his theory?


In this highly readable volume of vignettes, coupled with factual background, Pappas has assembled fascinating stories of intrigue and the bizarre - in short, the human background of the history of mathematics.

MATHEMATICAL SCANDALS delves behind the scenes and reveals real people, whose rivalries, deceptions, and idiosyncrasies are at odds with the mathematician's reputation for clear thinking and scientific detachment.


"If you have a kid over, say 16 years who thinks math is boring, this book is the cure."  — Discover Magazine



"These scandals are not salacious tabloids; rather, they concern incidents and controversies involving personalities from the history of mathematics.The stories are informative, and the writing style is appealing."  —The Mathematics Teacher



"Pappas' passion for math has produced many previous winning titles: this presents a new vision for exploring math Even reluctant math users will find the blend of intrigue and social history involving." —The Bookwatch



"MATHEMATICS SCANDALS gives Pappas' devoted fans another dose of the inventiveness and flair they have come to expect from her work." —Publisher's Group West



"Many associate mathematics with cold logic. To dispel the stereotype, the author examines the human sides and foibles of renowned mathematicians." — The Actuarial Digest


· $12.95 ·160 pages ·5.5"x8.5"

·paperback · index ·illustrations

· ISBN: 1-884550-10-X



Experience the Beauty of Mathematics Through Quotations

by Theoni Pappas


Learn what Alice in Wonderland, Albert Einstein, William Shakespeare, Mae West, Plato and others have to say about mathematics.



THE MUSIC OF REASON is a compendium of profound and profane thoughts on mathematics by mathematicians, scientists, authors and artists.

This collection of quotes - a mixed bag of the humorous and the philosophical -is a thought-provoking sampler on mathematics, dealing with mathematics and the imaginations, the arts, history, nature, numbers, sciences, computers and much more. Students, teachers and others will all enjoy this collection of thoughtful and humorous quotes.


" …divided into fifteen categories each category preceded by a short commentary by the author. integrating mathematics to with such subjects as science, history, English, art, and music, the quotations from this book can act as a springboard for some lively discussions linking mathematics to other subjects and the real world will complement the collections of mathematicians and mathematics educators alike." — ­The Mathematics Teacher


$9.95  • 5"x7"  • illustrated throughout

128 pp • ISBN:1-884550-04-5



by Theoni Pappas





Pappas has come up with yet another way to make math part of your life. Not a calendar, not a reference book, but a compendium of mathematical information that will give you your math fix everyday.


—Each day —


  •  kick starts your brain with a problem or puzzle (detailed solutions are included)
  • as a mathematical quote to inspire the other side of your brain
  • features a historical or current math note
  • has its date expressed in another number system


— Start off your day with it.

— Take it to meetings.

— Share it with friends.


ISBN: 1-884550-20-7 · $12.95

· 5.5"x8.5" · 256 pages · illustrated




by Theoni Pappas




"Pappas's books have been gold mines of mathematical entertainment...spreading inspirational and mathematical good cheer. "  —­Jon Scieszka, author of Math Curse


MATHEMATICAL FOOTPRINTS takes a creative look at the role mathematics has played since prehistoric times, and will play in the future, and uncovers mathematics where you least expect to find it­ from its many uses in medicine, the sciences, and its appearance in art to its patterns in nature and its central role in the development of computers. Pappas presents mathematical ideas in a readable non-threatening manner.



· $10.95 ISBN: 1-884550-21`-5

·240 pages · 5.5"x8.5" · photos & illustrations throughout




by Theoni Pappas

Whether it's stuff in your kitchen or garden, stuff that powers your car or your body, stuff that helps you work, communicate or play, or stuff that you've never heard of ­ you can bet that mathematics is there.


MATH STUFF brings it all in the open in the Pappas style.


Learn what a holyhedron is, how computers get stressed, how e-paper will work, how codes and numbers work with our bodies. Learn about up-to-date math ideas and how they will impact our lives.


By the end of this book you will think "Mathematics is the stuff that dreams are made of."


$12.95 ·8.5"x5.5"·256 pp