81. Math Chess - EFront Math Chess Retrograde Analysis resources; Scacchi e Matematica, Nel sito L Italia Scacchistica) at IP in recreational mathematics 6. http://www.velucchi.it/mathchess/

eMail mathchess@velucchi.it fax +39.05061431159 some of my prehistorical Web pages Internet Archive hosted) at : www.cli.di.unipi.it/~velucchi www.geocities.com/SiliconValley/9174 www.geocities.com/CapeCanaveral/8499 www.geocities.com/CapeCanaveral/1904 ... anduin.eldar.org/~problemi bio/bibliographycal notes www.geocities.com/Colosseum/Field/4530/mv.htm leoncini.freeservers.com/velucchi.html www.johnrausch.com/PuzzleCollectors/000000b0.htm www.chessworld.org/V.htm (Seek: Velucchi at Cambridge University Library (UK - Search by Author: Velucchi ) :: at State Library of Victoria (Australia - Search Author: Velucchi ) :: at The On-Line Encyclopedia of Integer Sequences (Enter a Word: Velucchi ) :: at Eric Weisstein's World of Mathematics PDB - Chess Problem Database Server (Enter: A='Velucchi' ) :: at KB - Koninklijke Bibliotheek - National library of the Netherlands (The Hague - NL) :: at .Zip PBM format) :: at BCPS library (UK - Seek: Velucchi ) :: at L'Italia Scacchistica (Chiavi: Velucchi , Nel sito:

82. GAMES 98 Links to recreational math Sites (6/28/98). Centre for Innovation in Mathematics Teaching. The University of Exeter s center. University of Toronto. http://www.margrabe.com/Games/Games98.html

THE WILLIAM MARGRABE GROUP, INC., CONSULTING, PRESENTS THE DERIVATIVES 'ZINE TM November 2001 Home ABOUT CONTACT SEARCH ... DEVIL'S DD Derivative Games TM from 1998 Click here to return to the main Derivative Games page. Derivative Games from 1999 Derivative Games from 1998 Derivative Games from 1997 Derivative Games from 1996 Commonality A salesman named Les is the host of a special party at The Grind After the Grind for some friends from the office – Art, Lance, Megan, and Roger. Their occupations are, not in this order, compliance officer, programmer, risk manager, and trader. Cande R. is dancing in Roger's lap. Les says, "I brought us together, tonight, because I discovered that each of us has the same relationship between his or her name and his or her occupation." After a few minutes, Lance says, "If that's the case, would you pay for Mattie Lup Roset to come over and join us for a while?" Megan blows up. "That does it. Tomorrow morning, I file a sexual harassment suit." What is each person's occupation?

83. Recreational Mathematics@Everything2.com Any math which can be made into a game or puzzle (though some of these Most of the older recreational mathematics which was at all interesting has http://www.everything2.com/index.pl?node=recreational mathematics

84. Book Reviews In NerdMedia recreational math. The Golden Ratio (Mario Livio); Temperament (Stuart Isacoff); Proofs From The Book (Paul Erdos); Gödel, Escher, Bach (Douglas Hofstadter http://tjclark.ath.cx:2500/nerdmedia/show/BookReviews

NerdMedia Book Reviews Home Page All Pages Recently Revised Authors ... Export Gautam has mentioned: The Waste Books (Georg Christof Lichtenberg) Selected Short Stories (William Faulkner) The Wolves Of Memory (George Alec Effinger) What Entropy Means To Me (ibid.) Tristram Shandy (Laurence Sterne) Kristel has mentioned: Life And Death In Shanghai (Nien Cheng) other Oppressed Women In 20th Century China Autobiographies Neverwhere (Neil Gaimon) Discworld Series Name Of The Rose (Umberto Eco) An Equal Music (Vikram Seth) Possession (A.S. Byatt) but beautiful (Geoff Dyer) His Dark Materials trilogy (Philip Pullman) (George Orwell) Jazz (Toni Morrison) Lives of the Great Composers (Harold Schonberg) Meg has mentioned these books Infections And Inequalities (Paul Farmer) Pride And Prejudice (Jane Austin) The Hero And The Crown (Robin McKinely) INPO The Lives Of A Cell (Thomas) Nisa (Shostak) The Sun Also Rises (Hemingway) The Seekers (Boorstin) Toshi has read and favorably mentioned these books ( Middling Books found here): Scifi, fantasy: Pattern Recognition (William Gibson) Neuromancer (ibid.)

85. Temple Times: Making Math Fun Is All In The Cards In addition to making math fun, Chein said the skills learned in the recreational math class can be used throughout life. http://www.temple.edu/temple_times/3-6-03/mathemagic.html

MARCH 6, 2003 VOLUME 33 NUMBER 21 Professor has a few tricks to make math fun Recreational mathematics. Although the term seems like a classic oxymoron, it is actually a class here at Temple. Designed to get people thinking about the magic of math, the course is taught by a handful of professors, including one who knows the trick to making math fun. The competition, sponsored by the actuarial science program in the risk, insurance and healthcare management department of the Fox School of Business and Management, pitted 11 area high schools in a series of math events. Winning was secondary to encouraging an interest in mathematics. And, if a trick or two could be used to advance the cause, then Chein was up for the task. Problem Solving through Recreational Mathematics with Bonnie Averbach, an actuarial science professor at Temple. An avid fan of logic and math puzzles, Chein began toying with the idea of creating a course on recreational mathematics in the early 1970s. As quickly as you can say presto chango, the class was born. It is now offered once a year and has many faculty members vying to teach the class.

86. Block-Packing Jambalaya 5 D. Klarner, BrickPacking Puzzles , J.recreational math., 6(2), Spring, 1973, pp. 112-117. Written on the occasion of the Puzzle Exhibition at the http://home.comcast.net/~billcutler/docs/blockpacking.html

Block-Packing Jambalaya billcutlerpuzzles.com My primary interest over the years has been burr puzzles, but there is another small category of puzzles which is especially intriguing to me. It is 3-dimensional box-packing puzzles where the box and all the pieces are rectangular solids. The number of such puzzles that I am aware of is quite small, but the 'tricks', or unique features that the puzzles employ are many and varied. I know of no other small group of puzzles which encompasses such a rich diversity of ideas. Presented here are 11 such 'block-packing' puzzles. The tricks to most of the puzzles are discussed here, but complete solutions are not given. The puzzles are grouped according to whether there are holes in the assembled puzzle and whether the pieces are all the same or different. For each puzzle, the total number of pieces is in parentheses. If known, the inventor of the puzzle, date of design, and manufacturer are given. I. No holes, all pieces the same "Aren't these puzzles trivial?", you ask. Well, you are not far from being completely correct, but there are some interesting problems. David Klarner gives a thorough discussion of this case in

87. Eispap.html The Persistence of a Number, NJA Sloane, J. recreational math, 6 (1973), pp. 9798. Some Doubly Exponential Sequences, AV Aho and NJA Sloane, http://www.research.att.com/~njas/sequences/eispap.html

Papers dealing with integer sequences The On-Line Encyclopedia of Integer Sequences postscript pdf ], N. J. A. Sloane, in Handbook of Computer Science , 2000 (to appear). My Favorite Integer Sequences postscript pdf ], N. J. A. Sloane, Sequences and their Applications (Proceedings of SETA '98) , C. Ding, T. Helleseth and H. Niederreiter (editors), Springer-Verlag, London, 1999, pp. 103-130. On Cayley's Enumeration of Alkanes (or 4-Valent Trees) , E. M. Rains and N. J. A. Sloane, Journal of Integer Sequences Low-Dimensional Lattices VII: Coordination Sequences postscript pdf ], J. H. Conway and N. J. A. Sloane, Proc. Royal Soc. London, Series A , 453 (1997), pp. 2369-2389. The Primary Pretenders html postscript pdf ], J. H. Conway, R. K. Guy, W. A. Schneeberger and N. J. A. Sloane, Acta Arithmetica , 78 (1997), pp. 307-313. Algebraic Description of Coordination Sequences and Exact Topological Densities for Zeolites , R. W. Grosse-Kunstleve, G. O. Brunner and N. J. A. Sloane, Acta Cryst. , A52 (1996), pp. 879-889. A New Operation on Sequences: The Boustrophedon Transform postscript pdf ], J. Millar, N. J. A. Sloane and N. E. Young

88. Recreational Mathematics (David Eppstein) An extensive list of web resources for recreational math. Category Recreations. Url http//www.ics.uci.edu/~eppstein/recmath.html...... http://www.science-search.org/index/Math/Recreations/6242.htm

Search in Science-Search.org for: What's new Top Searches Statistics Science News ... Home : Detailed Information Name: Recreational Mathematics (David Eppstein) Description: An extensive list of web resources for recreational math. Category: Recreations Url: http://www.ics.uci.edu/~eppstein/recmath.html Date: Current Rating: Rate this web site: Rating: Votes: Something wrong with this resource? Report this link as broken About Us Contact Us Site Guide ... Add Science Search to Your Web Site The Science Search Directory is based on DMOZ. Science Search has modified and enhanced this data. Submitting to DMOZ: Help build the largest human-edited directory on the web. Submit a Site Open Directory Project Become an Editor Science Search's Sponsors: Goom NL

89. Key Curriculum Press | Miquon Math Materials Miquon Math Materials Take Second Place in 1996 Practical Homeschooling Reader logic, and recreational math into the early learning concepts and skills. http://www.keypress.com/catalog/products/supplementals/Prod_Miquon.html

Home Customer Service Ordering Information Contact Us ... Site Map State Resources Choose Your State... Alabama Alaska Arizona Arkansas Colorado Connecticut Delaware District of Columbia Florida Georgia Hawaii Idaho Illinois Indiana Iowa Kansas Kentucky Lousiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oregon Oklahoma Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming Resource Centers The Geometer's Sketchpad Fathom Dynamic Data TinkerPlots Discovering Algebra ... Statistics in Action Professional Development In Partnership with You Summer Institutes Custom Workshops Implementation Workshops General Information Ordering Information Customer Service Contact Us Meet Our Authors ... Press Room Other Key Sites Key College Publishing KCP Technologies Keymath.com Supplementals Miquon Math Materials Miquon Math Materials Miquon Math Materials Take Second Place in 1996 Practical Homeschooling Reader Awards!

90. Recreational Mathematics - MavicaNET URL http//math.furman.edu/~mwoodard/mquot.html. shown in filters Publications Contains many links to recreational mathematics resourses. http://www.mavicanet.com/directory/eng/8677.html

selCatSelAlt="Deselect category"; selCatDesAlt="Select category"; selSitSelAlt="Deselect site"; selSitDesAlt="Select site"; MavicaNET - Multilingual Search Catalog MavicaNet Lite - Light version Catalog Belarusian Bulgarian Croatian Czech Danish Dutch English Estonian Finnish French German Greek Hungarian Icelandic Irish Italian Latvian Lithuanian Norwegian Polish Portuguese Romanian Russian Serbian (cyr.) Serbian (lat.) Slovak Spanish Swedish Turkish Ukrainian Culture Science Mathematical Sciences Culture ... Elementary Mathematics Recreational Mathematics Sites Sister categories ... Applied Mathematics Computer Science Discrete Mathematics Elementary Geometry Elementary Mathematics Encyclopaedias and Encyclopaed... Foundations and Topology Geometry and Geometric Analysi... History of Mathematics Information Theory, Modelling,... Logic Mathematical Education Mathematical Physics, Differen... Mathematicians: Personalia Mathematics by region Number Theory, Algebra, Analys... Popular Themes Probability and Statistics Programming Resources for Mathematics Terminology, History, and Gene...

91. Vijay Natarajan recreational math. Fold up patterns to create Archimedian Solids Some simple but curious things related to Math Spatial Illusions, Repeating Geometric http://graphics.idav.ucdavis.edu/~vijayn/links/links.html

Recreational Math Fold up patterns to create Archimedian Solids Some simple but curious things related to Math Spatial Illusions, Repeating Geometric Patterns A good collection of recreational math pages ... The Gathering for Gardner International News Times Herald CNN Google news Indian News Times of India Hindu samachar.com Google India news Travel Mapquest Yahoo maps Davis Weather Durham Weather Email gmail hotmail yahoogroups Sports Duke Basketball Duke Devils ESPN Dictionary dictionary.com Webster Last modified: Tue Feb 24 15:48:57 EST 2004

92. Miscellaneous Bill » Blog Archive » Numbers Containing Numbers This is a little recreational math problem that I think I came up with. (After, I think, seeing this problem.) I think it’s hard. But maybe I’m just missing http://www.32768.com/bill/weblog/2004/10/29/numbers-containing-numbers/

miscellaneous bill Categories cars coding lisp metajunk ... Uncategorized blogroll beaver sowbug Culturemagnet Kloba Filter ... E Syllabus Enum old junk Java Lego Palm OS See Also del.icio.us/miscellaneousbill Meta Login Valid XHTML Archives September 2005 August 2005 June 2005 April 2005 ... November 2001 Note Big fish eat the little ones. word chains numbers containing numbers October 29th, 2004 This is a little recreational math problem that I think I came up with. (After, I think, seeing this problem (Update: The is nothing new under the sun. 1995 discussion from sci.math Define M(n) to be the smallest positive integer k such that the representations of the numbers 1 through n are all substrings of the representation of k. As an example, here are the first few M(n), working in base 4: n M(n) For what n can you find M(n), using base 2? 8? 10? 16? Does there exist a cheap way to compute M(n) for large n? This entry was posted on Friday, October 29th, 2004 at 12:19 am and is filed under rec math Bob Clagett Says: November 2nd, 2004 at 11:24 am

93. Science Forums And Debate - About The Term "recreational Mathematics"..... i am not sure what recreational math is . but Mathworld has some stuff under recreational maths http://www.scienceforums.net/forums/archive/index.php/t-6767.html

Science Forums and Debate Mathematics Applied Mathematics > About the term "recreational mathematics"..... PDA View Full Version : About the term "recreational mathematics"..... albertlee 10-23-2004, 02:02 AM What does "recreational mathematics" mean? what sort of things in mathematics is considered as "recreational"? is "recreational mathematics" another word of "game theory"? if not, what is their difference? and maybe their relationship? Apreciate for furthur responds Albert bloodhound 10-23-2004, 07:25 AM recreational mathematics is NOT I repeat NOT another word for "Game theory". Game theory is another branch of mathematics ( or economics?). i am not sure what recreational math is.... but Mathworld has some stuff under recreational maths http://mathworld.wolfram.com/topics/RecreationalMathematics.html dave 10-25-2004, 03:47 PM I believe it's a term for things like math puzzles, etc. Game theory was invented by von Newmann, wasn't it? Models wars and stuff from what I can remember. Beamer GPS Free Online Dictionary Hotels ... The eBay Song

94. Expository And Recreational Mathematics Expository and recreational mathematics. Dan Isaksen. I have written several expository The Tanglewood of mathematics, Math Horizons, September 1997. http://www.math.wayne.edu/~isaksen/Expository/

Expository and Recreational Mathematics Dan Isaksen I have written several expository mathematical articles and several articles about recreational mathematics. Below is a list of papers that I have published, with short descriptions of the subject of each. Many of these topics make great undergraduate colloquia. Please contact me if you're interested in hearing a talk on any of these subjects. In the long term, I intend to spend more time on these sorts of projects. Somehow I never seem to find the time. In conjunction with Al Petrofsky , I plan to write down a lot of ideas about the topology, geometry, and symmetry of knitting. There is some really interesting and surprisingly sophisticated mathematics behind knitting. Al and I wrote a not-quite-finished HTML version of our work on Mobius knitting . I also a have page of links for mathematical knitting. In conjunction with Tara Holm , I plan to finish a paper about symmetries of parking lots. This is kind of like the classification of wallpaper symmetries into 17 types. A cohomological viewpoint on elementary school arithmetic American Mathematical Monthly (2002), no. 9, 796805.

95. The Number Years Fractal Web SitesIf you are interested in recreational mathematics, or even just weirdness in general, take a look at this site. Clifford Pickover isn t just a web site http://www.jquinn.oxy.edu/numberyears/

Welcome Instructions Sample Games The NUMBER YEARS Instructor Login Credits Sponsors A J E N E R I C A R T Production

96. MSSM Summer Camps - Home Day and boarding programs for boys and girls in grades 59. Offers hands-on classes in math, science, and technology as well as recreational activities. Held at the Maine School of Science and mathematics in Limestone. Calendar, daily schedule, FAQ, and downloadable application form. http://www.mssm.org/sumex/index.html

Calendar of Dates Boys 5th - 7th Grade: July 3rd - 9th, 2005 Boys 7th - 9th Grade: July 10th - 16th, 2005 Girls 7th - 9th Grade: July 17th - 23rd, 2005 Girls 5th - 8th Grade: July 24th - 30th, 2005 A printable version of this calendar is available here . Opens in Adobe Acrobat Reader. Located at the Maine School of Science and Mathematics in Limestone, Maine, the MSSM Summer camps are held to provide young students with an opportunity to explore math, science, and technology. With new and exciting chances to explore hands on areas of these fields, MSSM Summer Camps hopes to ignite within students a desire to pursue careers in these fields in the future. Welcome to our website featuring the new logo designed by Linday Searles. Some of you may remember Lindsay as a camper, others of you may remember her as a student at MSSM, and still others may remember her as mentor or houseparent at summer camps. She has a long history here and we are grateful for her new design which we will be phasing in over the next year. Please give us feed back on our new logo and webdesign and bear with us as we make this transition. MSSM Summer Camps website is © The Maine School of Science and Math 2004.

97. Mathematics: Intellectual And Recreational 13501400; MiddleEnglish mathematic from the Latin mathematica from the Greek mathematikè Four 4s These problems actually use Logic more than math, http://thestarman.dan123.com/math/

Some Investigations into: Mathematics (math e the systematic study of forms, figures, and quantities; the properties, measurement, and the relationships between them, expressed in both numbers and symbols A collective word for all the procedures and operations of related "branches" which have historically arisen from mathematics; such as, Arithmetic, Geometry, Algebra, Trigonometry, Calculus (Differential and Integral), Set Theory, Boolean Logic, Statistics, and Topology. Often used to describe or speak of the mathematical aspects of various sciences , such as the mathematics of physics. 1350-1400; MiddleEnglish mathematic from the Latin math e matica from the Greek math e matik téchn e ) scientific (craft), equivalent to math e mat- (the singular of máth e ma ) science or knowledge -ik e fem. of -ikos -ic [Composite definition by The Starman; based on many different sources.] "The universe is a book open for us to gaze upon, but it cannot be understood unless one first learns its language, the language of Mathematics; written in numbers and geometric figures, without which it is impossible to understand a single word of it. " Il Saggiatore OK, pull out some

98. Recreational Diving Students will be given the opportunity to practice math skills and learn about the physical aspects of recreational diving by exploring information on the http://edweb.sdsu.edu/courses/edtec596/Units/Dive/DiveUnit.html

Recreational Diving http://edweb.sdsu.edu/courses/EDTEC596/Units/Dive/DiveUnit.html Designed by Helena Cho Cedric Logan Mark Sovitsky Introduction This unit was developed at San Diego State University in EDTEC 596 , Interdisciplinary Teaching with Technology, Bernie Dodge , Instructor. This interdisciplinary unit will focus on recreational diving. Students will explore the effects that the ocean has on divers as well as the effects that divers have on the ocean. Students will also learn math through the perspective of diving. Content Areas and Grades This unit is anchored in grades seven to nine with the learning emphasis placed on math and physical education. The unit can be extended to grades ten to twelve with very little modification. Curriculum Standards Students will explore recreational diving and topics including rates of change (with respect to oxygen consumption and related topics), understanding charts and graphs (with references to slope), and physical effects of diving on the body, along with how these topics are related. Math Standards Addressed Mathematics as problem solving Mathematics as communication Mathematics as reasoning Mathematical connections ... Whole number computation Physical Education Standards Addressed Discover the benefits of exercise as a way of life Enjoy all forms of exercise and movement Develop movement knowledge Social development Students will be given the opportunity to practice math skills and learn about the physical aspects of recreational diving by exploring information on the web. Math skills will range from learning function and algebra concepts, problem solving and mathematical reasoning and putting mathematics to work.

99. Interactive Mathematics Miscellany And Puzzles math puzzles. Interactive education. A lot of math information for teachers, students and parents. Work out and enjoy mathematics. http://www.cut-the-knot.org/index.shtml

Username: Password: Sites for teachers Sites for parents Awards Interactive Activities ... Sites for parents Interactive Mathematics Miscellany and Puzzles Raymond Smullyan, a Mathematician, Philosopher and author of several outstanding books of logical puzzles, tells, in one of his books, a revealing story. A friend invited him for dinner. He told Smullyan that his teenage son was crazy about Smullyan's books and could not wait to meet him. The friend warned Smullyan not to mention that he is a Mathematician and that Logic is a part of Mathematics because the young fellow hated Mathematics. Having told this story, would it be wise to announce up front what this site is about? Perhaps against a better judgement, I've put together a manifesto that aims to explain the purpose of this site. Did you know that... The banner is clickable Arithmetic Base Conversion Divisibility Criteria Euclid's Game Fast Arithmetic Tips ... And much much more ... Logic Lewis Carroll's Logic Game Venn Diagrams And more ... Color Cycling on Mandelbrot ... And more ... Fallacies Curry's Paradox Delian Problem Solved A Faulty Dissection Langman's Paradox ... Rouse Ball's Fallacy Calculus Equations of the Straight Line Function, Derivative and Integral

100. Mathematical Games math Forum (Magic squares); Eric Weisstein (Magic squares); Ivars Peterson (Magic Tesseracts); C Rorres (Archimedes cattle problem) http://www-groups.dcs.st-and.ac.uk/~history/HistTopics/Mathematical_games.html

Mathematical games and recreations Alphabetical list of History Topics History Topics Index Version for printing Mathematical puzzles vary from the simple to deep problems which are still unsolved. The whole history of mathematics is interwoven with mathematical games which have led to the study of many areas of mathematics. Number games, geometrical puzzles, network problems and combinatorial problems are among the best known types of puzzles. The Rhind papyrus shows that early Egyptian mathematics was largely based on puzzle type problems. For example the papyrus, written in around 1850 BC, contains a rather familiar type of puzzle. You can see a picture of the Rhind papyrus Seven houses contain seven cats. Each cat kills seven mice. Each mouse had eaten seven ears of grain. Each ear of grain would have produced seven hekats of wheat. What is the total of all of these? Similar problems appear in Fibonacci 's Liber Abaci written in 1202 and the familiar St Ives Riddle of the 18 th Century based on the same idea (and on the number 7). Greek mathematics produced many classic puzzles. Perhaps the most famous are from

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