1. David Eppstein In that spirit, I ve collected many pages and links of recreational math web sites. My recreational math publications. Number Theory. http://www.ics.uci.edu/~eppstein/recmath.html

David Eppstein About Contact Research Students ... Math Fun Like many, I was inspired early on by Martin Gardner's Mathematical Games column, which included a mixture of puzzles, silliness, curious/useless math, and quite serious (but not overly technical) math. In that spirit, I've collected many pages and links of recreational math web sites. My recreational math publications Number Theory . Implementations of some simple number-theoretic algorithms along with pointers to other number theory web pages. Combinatorial Game Theory . Mathematical strategies for games like chess, go, and nim. The Geometry Junkyard . Many links to recreational geometry web pages, open problem lists, lecture notes, usenet postings, and brief blurbs from my own papers. For more serious geometry links, see my Geometry in Action pages.

2. Recreational Mathematics Numbers and other Recreational Topics. MathMania. Mathematics Competitions. Mathematical Games and Recreations. Humour in Mathematics. Math Joke Collection 1; Math http://camel.math.ca/Recreation/recreation.html

Recreational Mathematics Knot A Braid of Links POP Mathematics Interactive Mathematics Miscellany and Puzzles Palindromic Numbers and other Recreational Topics ... Mathematical Games and Recreations Humour in Mathematics Math Joke Collection 1 Math Joke Collection 2 Mathematics related comics and cartoons collection Mathematical Quotations Server ... Mathematical Recreation On Internet - Review Introductory paper by Mario Velucchi also see his comprehensive collection of Mathematical Recreations links The Diamond 16 Puzzle Questions? Comments? Suggestions for additions? Send Email to camel@camel.math.ca

3. Recreational Math recreational math. home. g4g4.com. Challenge= Help, SolveUnsolved and Partially solved problems from Ken's ArchivesClick here to do problems now. Problem Scroll down for Links. Next Card Color Betting recreational math. Scroll Down for Links recreational math books available (topics dissections, Pentominoes, inversions, fourth dimension, problems, Martin http://www.g4g4.com/recmath.htm

R E CR E ATI O NA L MA T H Scroll Down for Links home g4g4.com Challenge Help, Solve Unsolved and Partially solved problems from Ken's Archives- Click here to do problems now Problem: Scroll down for Links Next Card Color Betting: Paula shuffles a deck thoroughly and places cards up one at a time. Victor begins with a total bankroll of $100, and can bet any fraction of his current worth, prior to each revelation, on the color of the next card. He gets even odds regardless of the current composition of the deck, Thus, for example, he can decline to bet until the last card, whose color he of course knows, then bet everything and be assured of going home with $200. Is there any way Victor can guarantee to finish with more than $200? If so, what's the maximum amount he can assure himself of winning? From Peter Winkler- Games People Don't Play For Solution(will post May 1, 2000), e-mail webmaster@g4g4.com

4. Math Games And Recreational Math A variety of resources for games, numerology, puzzles, illusions, magic sqaures to enhance your love of mathematics! Fact TricksGlossaryMath TutorsBrowse CategoriesMath Help and TutorialsMath FormulasMath Lesson recreational mathematics. Guide picks. Math puzzles, games, tricks, squares, and magic http://math.about.com/cs/recreationalmath

zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') About Homework Help Mathematics Recreational Math Home Essentials Grade By Grade Goals Math Formulas ... Math Tutors zau(256,152,145,'gob','http://z.about.com/5/ad/go.htm?gs='+gs,''); Math Help and Tutorials Math Formulas Math Lesson Plans Math Tutors ... Help zau(256,138,125,'el','http://z.about.com/0/ip/417/0.htm','');w(xb+xb); Stay Current Subscribe to the About Mathematics newsletter. Search Mathematics Recreational Mathematics Math puzzles, games, tricks, squares, and magic to stimulate and challenge your right brain. Alphabetical Recent Archimedes Lab Something for everyone, including puzzles to make and solve, tessellations, geometric puzzles, optical illusions, and curiosities. Great brain food. Brain Teasers A great site for the young student. Brain teasers for the 8-13 year old. These challenges help to improve your problem solving abilities. Clever Games for Clever People Exercise your brain with these great problem solving puzzles that are sure to improve your mathematical thinking and logic ability. Combinatorics How many combinations are there? Think you know combinatorics? Then take the challenge. Solutions are provided, don't cheat!

5. Recreational Math: Introduction In this section of Lionel Deimel’s Farrago, you will find discussion of topics in recreational math where I have made some small contributions. http://www.deimel.org/rec_math/rec_math.htm

Previous Home Next I was doing mathematics—arithmetic, at any rate—for recreation as early as age 6, although it was not until I got to junior high school that I encountered what is generally known as recreational mathematics. It was in junior high that I encountered a charismatic teacher, Mrs. Eunice Williams, who gathered around her, Pythagoras-like, a group of talented math students and infected them with her excitement and love for mathematics. At least two students in my class eventually became professional mathematicians, and I studied computer science in graduate school and minored in math. In fact, when I had a rare opportunity to take a free elective in college, I chose a linear algebra course. In graduate school, one of my favorite courses was modern algebra. My dissertation was in automata theory, which comes perilously close to being a topic of recreational mathematics, which is how I viewed it while I was still an undergraduate. I enjoy mathematical puzzles and problems of all kinds, although I don’t spend a lot of time working on them. Every so often, however, a problem really engages me—particularly if it can be generalized—and the topic becomes consuming. Working on such a project helps me keep my mathematical skills sharp and gives me an excuse to do things that I wouldn’t normally do in the course of my work.

6. Puzzles, Puzzle Links RECREATIONALMATH. Links. Featured LinksNumber Line "Number Line was invented in TO EXCHANGE. recreational math books available (topics dissections, Pentominoes, inversions, fourth http://www.g4g4.com/recmath1.htm

R E C R E A T I O N A L M A T H Links Featured Links: Number Line : "Number Line was invented in Japan. At first it may seem difficult, but don't worry..... Cube Lovers archives Cliff Pickove Ed Pegg Jr Weekly column in the spirit of Mathematical Games. Francis Edward Su The Fair Division Calculator for dividing cakes, chores, or rent; and Math Fun Facts!, a collection of interesting math tidbits! Challenge = Help, Solve Unsolved and Partially solved problems from Ken's Archives- Click here to do problems now TO EXCHANGE Recreational Math books available: (topics: dissections, Pentominoes, inversions, fourth dimension, problems, Martin Gardner)- Click Here for selection Journal of Recreational Mathematics: Charles Ashbacher Juegos de Ingenio Ivan Skvarca, In Spanish Shufflebrain - Original web games by Scott Kim Ivars Peterson's MathTrek A weekly helping of new developments in mathematics, math in everyday life, with updates on a variety of puzzles and games. http://sciencenews.org Karl Scherer The site displays a selection of the author's books, puzzles, board games, games software, mazes, chess problems, math problems, etc http://www.kiwi.gen.nz/~karl Mamikon A. Mnatsakanian

7. Math Magic Math Magic is a web site devoted to original mathematical recreations Numbers With Names recreational math Sites http://www.stetson.edu/~efriedma/mathmagic

Math Magic is a web site devoted to original mathematical recreations. If you have a math puzzle, discovery, or observation, please e-mail me about it. You can also send answers to the problem of the month. Problem of the Month Archive Problem of the Month (June 2004) This month we investigate the question "What is the smallest rectangle with aspect ratio r that contains n congruent rectangles with aspect ratio r?" In other words, for positive integers n, and r 1, we define m n (r) to be the minimum value of m so that an m x mr rectangle contains n non-overlapping non-tilted 1 x r rectangles. Clearly if n is a perfect square, then m n (r) = n with no wasted space. What are the values of m n (r) for non-square values of n? For example, there are 3 cases for m (r): r r r m (r) = 2 m (r) = r m (r) = 2 / r A much harder question is to find M n (r) , the smallest value of m so that so that an m x mr rectangle contains n non-overlapping 1 x r rectangles that might be tilted. For example, when r > 1.9762, M (r) < m (r): What are the values of M n (r) for small values of n?

8. Maths Index Articles and images on recreational math from fractals and magic squares to mathemorchids and Galois. http://www.geocities.com/aladgyma/articles/scimaths/maths.htm

Maths Index Mathemorchids The algorithms of nature. Polygrammagick The lesser-known cousins of magic squares. Reciprocal Arrangements Magic squares from the digits of prime reciprocals. Rep It Up More magic squares from reciprocals. Dying Jungian Rimbaud vs Galois, or Poetry vs Maths Platonic Hex (NEW 22/ii/2004) Magic Platonic polyhedra. Sequence and Pearls (NEW 14/iii/2004) Patterns created by modified Fibonacci sequences. The Joy of x (NEW 21/iii/2004) Patterns created by (x + y ) mod q (may load slowly). Squareway to Heaven (NEW 14/iii/2004) Magic squares dedicated to the seven heavenly bodies of traditional astrology. 3x3 Font (NEW 18/ii/2004) A minimal font. Gamma, Gamma, Gamma, Hey! The swastika and 1/273. Koch Doodles Fun with fractal snowflakes. 222 Divine Some interesting facts associated with the second repunit. 111 Chariots The 111 instances of the word "chariots" in the Old Testament of the King James Bible. Sum Beastliness Some simple mathematics associated with 666, the Number of the Beast. Delete and Repeat till Complete Deletion algorithms and multiplicative palindromes. Unless otherwise stated, all articles are by

9. Recreational Mathematics Forum A forum for posting messages about math recreations. Hosted at Delphi. http://forums.delphiforums.com/recmath/start/

10. Math.com Recreational Math Roman Numeral Calculator. Articles. American Mathematical Association Online columns (some monthly, some more often) on recreational math. http://www.math.com/everyone/recreational.html

Home Teacher Parents Glossary ... Email this page to a friend Resources Cool Tools References Test Preparation Study Tips ... Wonders of Math Search Math.com Online Puzzles - A collection of interactive online puzzles based on historic games. Online Rubik's Cube - Guaranteed to keep you online past bedtime! (Advanced Topic - Notes on the Math of Rubik's Cube Famous Puzzles - Exercise your brain with problems that have kept people guessing for centuries! (Math Forum) Cut-the-Knot Interactive mathematics miscellany and puzzles. (Alex Bogomolny) Fractals Chaos Tessellations Spirograph ... Roman Numeral Calculator Articles American Mathematical Association Online columns (some monthly, some more often) on recreational math. Scientific American: A Century of Mathematics How can we evaluate what has been accomplished and guess at what's to come? Contact us Partnership Link to us Legal Notices . Please read our Privacy Policy

11. Math.com Classroom Recreational Math on their toes including you! Puzzle Collection Problems of the Week recreational math for Everyone. Forum Web Units and Lessons http://www.math.com/teachers/recreational.html

Home Teacher Parents Glossary ... Email this page to a friend For Teachers Teacher Centers Recreational Math Problem of the Week ... At Home Resources Cool Tools Formulas References Test Preparation ... Wonders of Math Search Puzzles and games can bring math to life with challenges guaranteed to keep everyone on their toes - including you! Puzzle Collection Problems of the Week Recreational math for Everyone Forum Web Units and Lessons A collection of web-based, interactive and multimedia units created by teachers. Many use alternate materials and cross-curricular activities to extend math beyond the textbook. (Math Forum) Student pages: Pages designed to spark student interest in the "cool" side of math. Fractals Chaos Tessellations Spirograph ... Legal Notices . Please read our Privacy Policy

12. Math Games And Recreational Math Mathematically Interesting Games For those of you who enjoy recreational, try playing Logic Puzzlers and Teasers Over 30 math and logic puzzles ranging from http://math.about.com/od/recreationalmath/index_r.htm

zJs=10 zJs=11 zJs=12 zJs=13 zc(5,'jsc',zJs,9999999,'') About Homework Help Mathematics Recreational Math Home Essentials Grade By Grade Goals Math Formulas ... Math Tutors zau(256,152,145,'gob','http://z.about.com/5/ad/go.htm?gs='+gs,''); Math Help and Tutorials Math Formulas Math Lesson Plans Math Tutors ... Help zau(256,138,125,'el','http://z.about.com/0/ip/417/0.htm','');w(xb+xb); Stay Current Subscribe to the About Mathematics newsletter. Search Mathematics Recreational Mathematics Math puzzles, games, tricks, squares, and magic to stimulate and challenge your right brain. Sort By: Guide Picks Alphabetical Mathematically Interesting Games For those of you who enjoy recreational, try playing these games and figure out the mathematics behind them. Mazes of all Shapes Mazes of all shapes, mostly names, but also animals and abstract. Find your 'name' in a maze. Probability Puzzlers Great puzzlers to challenge you, complete with solutions if you need them. Puzzle Competitons Some excellent brain teasers/boosters to challenge your right brain. Solutions are provided in some instances. Puzzles, Games and Amusements for All Ages

13. Recreational Mathematics -- From MathWorld http://mathworld.wolfram.com/topics/RecreationalMathematics.html

INDEX Algebra Applied Mathematics Calculus and Analysis Discrete Mathematics ... Alphabetical Index ABOUT THIS SITE About MathWorld About the Author DESTINATIONS What's New MathWorld Headline News Random Entry ... Live 3D Graphics CONTACT Email Comments Contribute! Sign the Guestbook MATHWORLD - IN PRINT Order book from Amazon Recreational Mathematics Cryptograms Dissection Folding Games ... Sports

14. Recreational Math (Riddle, Puzzle, Brain Teaser) - Numericana The Eugène Strens recreational mathematics Collection (University of Calgary). Math Puzzles in Sam Loyd s Cyclopedia listed by Donald E Knuth (UC Stanford). http://home.att.net/~numericana/answer/recreational.htm

home index units counting ... physics Final Answers , Ph.D. Recreational Mathematics [Man] is only completely a man when he plays. Friedrich Von Schiller Counterfeit Coin Problem : In 3 weighings, find an odd object among 12, 13, 14. Unabridged discussion General Counterfeit Penny Problem : Find an odd object in the fewest weighings. Unabridged discussion Seven-Eleven : Four prices with a sum and product both equal to 7.11. Equating a right angle and an obtuse angle , with a clever false proof. Choosing a raise : Trust common sense, beware of fallacious accounting. 3 men pay $30 for a $25 hotel room , the bellhop keeps $2... Is $1 missing? Chameleons : A situation shown unreachable because of an invariant quantity. Sam Loyd's 14-15 puzzle also involves an invariant quantity (and two orbits Einstein's riddle : 5 distinct house colors, nationalities, drinks, smokes and pets. Numbering n pages of a book takes this many digits (formula). The Ferry Boat Problem (by Sam Loyd): To be or not to be ingenious All digits once and only once : 48 possible sums (or 22 products). Crossing a bridge : 1 or 2 at a time, 4 people (U2), different paces, one flashlight!

15. Basic Library List-Recreational Mathematics Stewart, Ian. Game, Set, and Math Enigmas and Conundrums Cambridge, MA Basil Blackwell, 1989. recreational mathematics Puzzle Collections. Ainley, Stephen. http://www.maa.org/BLL/recmath.htm

Recreational Mathematics Back to Table of Contents Recreational Mathematics: Surveys * Averbach, Bonnie and Chein, Orin. Mathematics: Problem Solving through Recreational Mathematics New York, NY: W.H. Freeman, 1980. *** Ball, W.W. Rouse and Coxeter, H.S.M. Mathematical Recreations and Essays, Mineola, NY: Dover, 1987. Thirteenth Edition. * Beiler, Albert. Recreations in the Theory of Numbers Mineola, NY: Dover, 1964. *** Berlekamp, Elwyn R.; Conway, John Horton; and Guy, Richard K. Winning Ways for Your Mathematical Plays, New York, NY: Academic Press, 1982. 2 Vols. Cadwell, J.H. Topics in Recreational Mathematics New York, NY: Cambridge University Press, 1966. Foster, James E. Mathematics as Diversion Astoria, IL: Fulton County Press, 1978. *** Kraitchik, Maurice. Mathematical Recreations, Mineola, NY: Dover, 1953. Second Edition. * Melzak, Z.A. Companion to Concrete Mathematics, New York, NY: John Wiley, 1973, 1976. 2 Vols. ** Ogilvy, C. Stanley. Tomorrow's Math: Unsolved Problems for the Amateur, New York, NY: Oxford University Press, 1972. Second Edition.

16. Recreational Math Links Recreational. Mathematics. (aka Fun Stuff). Just for Fun. Mega Math. Geometry Jokes. Puzzles. Cool Math. ReturnTo Links. http://www.apsu.edu/Galois/Links/mathlinks_rec.htm

Recreational Mathematics (a.k.a. Fun Stuff) Just for Fun Mega Math Geometry Jokes Puzzles ... Cool Math Return To Links

17. MathWorld News: The Mathematical Explorer Software Released MathWorld Headline News. recreational math Package Released by the Makers of Mathematica. August 20, 2001While many interesting http://mathworld.wolfram.com/news/2001-08-20/explorer/

INDEX Algebra Applied Mathematics Calculus and Analysis Discrete Mathematics ... Alphabetical Index ABOUT THIS SITE About MathWorld About the Author DESTINATIONS What's New MathWorld Headline News Random Entry ... Live 3D Graphics CONTACT Email Comments Contribute! Sign the Guestbook MATHWORLD - IN PRINT Order book from Amazon MathWorld Headline News Recreational Math Package Released by the Makers of Mathematica August 20, 2001While many interesting books devoted to the subject of recreational mathematics have been authored over the years, relatively few pieces of computer software on the topic have been released. This gaping void has now been filled by Wolfram Research's package The Mathematical Explorer The Mathematical Explorer is a stand-alone custom Mathematica product designed for anyone who has ever delighted in exploring the unexpected pleasures of mathematics. As readers of Martin Gardner's "Mathematical Games" columns are aware, one of the joys of recreational math is that no degree in higher math is necessary; a deep appreciation for the subject can be obtained with just a little basic algebra and a sense of fun. The Mathematical Explorer represents a compilation of topics from the books and articles of Stan Wagon, noted mathematician, author, and proponent of the

18. E-z Math Recreational Links ezgeometry recreational math Links. http://www.e-zgeometry.com/links/reclinks.htm

e-zgeometry Recreational Math Links Hot Math Games Math Magic Cool Math Topics Unknown ... Peg Game - Addictive - Try to leave only one peg in the center hole (be patient) Triangle Peg Game - a different version of the classic peg game Donkey Puzzle - Very Challenging - Only one student has done it Boxes - Take turns placing lines down until boxes are formed (most boxes wins) Sokoban - Move the money symbols to the shaded area - Be careful - Stay out of corners BattleShips - NO... You sunk my battleship!! Triple Quintzee - A web version of Yatzee Block Buster - Lots of strategy The Riddler - Try Double Take (memory) or Scrambler (a timed puzzle) Mancala - Ancient Stone Game - Read the rules Abalone - Hexagonal Strategy - Read the rules first Armada - Java Battleships On-line Battleships Game Go To Top Go To Top - Very Suprising Thinks.Com - Great Site Eight Queen Problem - Quite Tricky Rolling Cubes - Quite Tricky 3-D Rubix Like Puzzles - Cool Puzzles Go To Top Largest Know Prime Numbers Where is your birthday in Pi?

19. Proposing A Recreational Math Question/problem - Technology View Thread Proposing a recreational math question/problem. Click Here Proposing a recreational math question/problem. http://www.physicsforums.com/archive/t-1219

Physics Help and Math Help - Physics Forums Mathematics General Math Archives View Thread : Proposing a Recreational math question/problem Proposing a Recreational math question/problem imathgeek Hi there, I am a new person here, so I hope that you can understand this problem as I have written it. Suppose that you have an 8 by 8 grid (like a geo board) where at the intersections of the line segments are posts whereby you may run a string or rubber band about and make all sorts of geometric shapes. "On the 8 by 8 grid can you form squares with a string or rubberband such that the squares have integral areas from 1 through 9? The lines needn't be horizontal or vertical in order to do this. If possible, how do you form your squares on the grid to achieve the desired area? If not possible, provide a proof showing why it cannot exist." This is a problem I posed to my geometry students and I have received all sorts of answers. I am looking to verify my own work on the problem. Yep, I am a new professor and gave a problem that I didn't have an answer to. I know that squares of areas 1, 4 and 9 are trivial. I can place squares with areas 2, 5, and 8. Since these are the only sums of two squares less than 10, these should be the only squares possible.

20. Proposing A Recreational Math Question/problem - Physics Help And Math Help - Ph 0415-2003, 0550 PM, 1. imathgeek. Registered User. Join Date Apr 2003. Location Charleston, SC. Posts 3. Proposing a recreational math question/problem. http://www.physicsforums.com/showthread.php?t=1219

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