41. Index This is a fantastic site for all kinds of math puzzles and games. Math and Logic Puzzles and Games have been my hobby for over 50 years. http://www.geocities.com/bob_kraus_2000/

MATH and LOGIC PUZZLES and GAMES WARNING!!! The puzzles on this site are very difficult, and most require the use of a good spreadsheet program in order to solve them. It will take many hours, perhaps days, to solve each puzzle. They are intended for people with a degree in math, or those capable of attaining one. For easier puzzles see the links. CONTENTS Click on one of the topics below. Links to Other Good Sites: Ed Pegg Jr.'s MathPuzzle Site LOGIC PUZZLES MATH PUZZLES GAMES This is a fantastic site for all kinds of math puzzles and games. One of its best features is the enormous number of links! John Gowland's Math Puzzle Site Comments or Suggestions? This is a good site that has a great many of a tricky type of CrossNumber Puzzle as well as many other math puzzles and recreations. Name: Robert A. Kraus Email: bobkrauschicago@cs.com Personal Note: My name is Bob Kraus. I have lived in Chicago all my life and have a degree in Math from IIT. Math and Logic Puzzles and Games have been my hobby for over 50 years. The purpose of this site is to share some of the puzzles and games I have designed. Zillions of Games This site promotes an excellent strategy game-playing program for chess, reversi, and morris-type games. Hundreds of games and variants are available. You can program your own games and play them against the computer. Free Demo of 50 games, including Neutron, a game I designed.

42. Mathemajic: Where Maths Means More.. Indian site featuring calculation tricks and math puzzles. http://mathemajik.tripod.com/

setAdGroup('67.18.104.18'); var cm_role = "live" var cm_host = "tripod.lycos.com" var cm_taxid = "/memberembedded" Search: Lycos Tripod Free Games Share This Page Report Abuse Edit your Site ... Next MatheMajik Where maths means More... Maj Illusion Things to mess with your head and unbelievable for yours eyes !!! Top Indian Headlines Kashmir is not negotiable ... Poll Solving a puzzle is Waste of Time Yes No View Results Previous Polls Speacials Love Puzzle Message Boards Should Vedic Maths be thought for primary level? NewsLetter Email id Mathematicians of India Magical Equations Srinivas Ramanujan The genius who introduced the concept of infinity to the world. Aryabhata The genius who introduced Zero and Pi(3.14) to the world. check out amazing magical equations. Consecutive Numbers Consecutive Square Numbers. Sum of Consecutive Cubes. ... Sum of Consecutive Odd numbers. Magical Calculation Puzzels Check out the easiest method of finding square of any two digit numbers. The Great Train conspiracy New To Boat against the current? New Amazing simple puzzle Cool Articles Ancient India's Contribution to Mathematics: It was from this translation of an Indian text on Mathematics that the Arab mathematicians perfected the decimal system and gave the world its current system of enumeration which we call the Arab numerals, which are originally Indian numerals.

43. No Title math puzzles 171. Daryl Cooper South Hall 6522 UCSB. The puzzles below vary in difficulty, generally later ones are harder. Almost all of them I have heard http://www.math.ucsb.edu/~cooper/puz1.html

Next: About this document MATH PUZZLES 1-71 Daryl Cooper South Hall 6522 UCSB The puzzles below vary in difficulty, generally later ones are harder. Almost all of them I have heard from other people. They are purely for amusement. I do not give out answers. I am always on the lookout for new puzzles. They should be unusual. Most routine puzzles are of no interest to me. Surely this is impossible! [1] An ant starts at one end of a rubber band and walks along it at a speed of 1 inch per second. The rubber band is 10 inches long, and is being stretched uniformly at a rate of 20 inches per second. Does the ant ever reach the other end of the rubber band?. Give reasons. [2] Can you subdivide a cube into finitely many smaller cubes no two of which have the same size? [3] What is the maximum number of knights that you can place on a chess board so that no knight threatens (ie can jump onto) any other knight? Can you show your answer is the best possible? [4] Suppose I take a chess board, and remove two squares from opposite corners (ie the corners are on the same DIAGONAL) Is it possible to cover the remaining squares using dominoes, where each domino covers two adjacent squares? [5] There are 12 balls, identical in appearance. One of the balls is either heavier or lighter than the others.If I give you a balance and allow you to make 3 weighings, how could you arrange to discover which ball is the odd one out, and whether it is heavier or lighter than the others? [using a balance, you can weigh balls on one side against balls on the other side]

44. Mathematical Puzzles [encyclopedia] Click here for customer reviews/more info on The Everything Kids math puzzles Book The Everything Kids math puzzles Book Brain Teas http://eluzions.com/Puzzles/Math/

Arts Computers Gallery Games ... Fortune's Formula : The Untold Story of the Scient... William Poundstone Martin Gardner Brain Busters! Mind-Stretching Puzzles in Math and... Barry R. Clarke The Simple Solution to Rubik's Cube James G. Nourse Recommendation: The Colossal Book of Mathematics: Classic Puzzles,... Martin Gardner Entertaining Mathematical Puzzles Martin Gardner Recommendation: The Moscow Puzzles : 359 Mathematical Recreations ... Boris A. Kordemsky The Everything Kids' Math Puzzles Book: Brain Teas... Meg Clemens, Sean Glenn, Glenn Clemens, Sean Clemens Test Your Logic: Fifty Puzzles in Deductive Reason... George Summers Lewis Carroll's Games and Puzzles Lewis Carroll, Edward Wakeling Mathematical Puzzles EluZions.com Puzzles Math Books Dr. Ecco's Cyberpuzzles: 36 Puzzles for Hackers and Other Mathematical Detectives , by Dennis Elliott Shasha The puzzles collected here require no formal background beyond arithmetic and elementary algebra.just lively curiosity and keen intelligence. With 36 illustrated cases organized around eight major mathematical themes (from "Combinatorial Geometry and Geography" to "Ciphers and Secrecy"), this book will encourage you to use your mind and your computer in ways you never previously imagined. There are 9 gold coins. They all weigh the same except one is lighter than the others. Find this coin with two weighings on a pan balance.

45. Tim's Interactive Puzzle Solution Center Selection of online brainteaser and math puzzles. Includes difficulty ratings. http://www.sakharov.net/puzzle/

The Sakharovs Alex Irina Tim ... Email Projects Resources Sport Photos Median Logic Math Foundations Badminton Clubs Trip Photos ... Air Show Tim's Interactive Puzzle Solution Center Authentic dynamic visual implementations of famous and other curious brain teasers Two squares Remove eight sticks from a given figure so that the remaining sticks compose two squares that do not touch each other Cube Find out which colors will be on opposite faces of a cube whose faces are shown unfolded Eight Queens Place eight queens on a chessboard so that no queen attacks another Fair Share Help divide barrels so that everyone gets an equal share ** N Summed Numbers Find three numbers by given sums for some of their pairs Cannibals and Missionaries Help missionaries to cross a river with cannabals. Beware: one wrong move and missionaries will be eaten. * N Four Diamonds -simple version- Restore a four-diamond figure scrambled by a computer *** ! N Four Diamonds -difficult version- Restore a four-diamond figure scrambled by a computer Number pattern Discover a pattern and find a missing number ** ! N

46. Math Puzzles And Fun, Grades K-4 math puzzles and Fun compiled by the editors of FamilyEducation.com Students practice math activities while playing games, puzzles, and more. http://www.familyeducation.com/botr/product/0,3919,81-31723,00.html

Math Puzzles and Fun compiled by the editors of FamilyEducation.com Grades K-4 Students practice math activities while playing games, puzzles, and more. Table of Contents: Bird Beeps Safe Deposit Boxes An Outdoor Night Lantern Draw a Face Number Concentration Get That Bunny Home Calculator Confusion Know the Operation Crazy Quilt Dinah Dinosaur's 2-piece Math Suit Rainy Day Addition Classroom Number Search Whirling Around Help Subtract Fires The Math Elf Game Tens and Ones Concentration Teddy Bear Tropical Fish The Bear Twins Tippy's Points Just Ducky! Garden Tool Shapes Place Value Mail Happy Birthday to Me! Doggie Stops Football Teddy Bears The Circus Is Coming to Town Dot-to-Dot Tiger Count Number Puzzle Find the Way to the Bone Math Cut Ups Star Chase Number Search Dragon Count and Draw Construct Three Basic Shapes Math Games Grades K-2 Math Games Grades 3-8 Little Books 1-10 Grades Pre-K-3 Little Books 11-20 Grades Pre-K-3 Baseball Math Grades 4-8 Measurement Grades K-3 Addition, Subtraction, and Facts Review Sheets

47. MathPuzzle.com Celebrates math puzzles and mathematical recreations. http://www.mathpuzzle.com/

Puzzler's Picks Mathematica MathWorld Mathematical Explorer Mathforge.net Math Games Math Games Sudoku Variations Vector vs. Raster Tournament Dice Deadly Rooms of Death ... Paterson's Worms Revisited Archived Pages Mar-Jun Mar/April, design 2 Mar/April, design 1 Jan/Feb ... June-Dec More mathpuzzle pages Awards Book Recommendations Chaos Tiles Characteristic Polynomial ... Zome Google Search www mathpuzzle Support mathpuzzle.com Material added 11 Sep 05 Sudoku Variations The Magic Sudoku puzzle by Alexandre Owen Muniz a few weeks back was very popular . I followed it up with a Math Games column about Sudoku Variations . An unsung hero in this is Wei-Hwa Huang, who sent me an enormously helpful list of Sudoku types . Alan O'Donnell sent solutions (and corrections) for every puzzle in the column "I think I can say I've truly conquered this genre of puzzle now." Bob Harris mentioned that the Geometric Sudoku are also known as Latin Squares , with only one given per region. Bob Harris: It's amazing to me how much more difficult generating an 8x8 puzzle seems to be than a . Here's an 8x8 (below). Probably pretty hard, but at least 3 cells can be labeled quickly and a couple other matches (this cell is the same as this other cell) can also be identified.

48. Halfway Down The Danube: You Want Math Puzzles? fpi_coffecup.jpg Here s a math puzzle. Taken from the 46th International Mathematical So my intuition on what makes a math puzzle too easy is off. http://www.bookcase.com/~claudia/mt/archives/000722.html

Halfway down the Danube Main July 20, 2005 You want math puzzles? Here's a math puzzle. Taken from the 46th International Mathematical Olympiad , held in rainy Merida, Mexico: In a mathematical competition 6 problems were posed to the contestants. Each pair of problems was solved by more than two-fifths of the contestants. Nobody solved all 6 problems. Show that there were at least 2 contestants who each solved exactly 5 problems. Give yourself four hours and thirty minutes. Incidentally, Romania won four gold medals, a silver, and a bronze at the Olympiad out of her six contestants. They're all high school students. Posted by coyu at July 20, 2005 02:51 PM Comments A nice problem! I got it in a minute or two without pencil and paper, but that's because I teach undergrad discrete math. I think this would be a good homework problem for my students, but maybe too tricky for an exam. A hint: Remember the Lake Wobegon Principle, which says that it is not possible for every number in a set to be above average (strictly greater than the arithmetic mean).

49. Untitled Small collection of math puzzles and oddities geared toward gifted 9 to 12-year-olds. http://www.geocities.com/themetagrobologist/nav.htm

What is MaGiC? Puzzles Diary Oddities What is MaGiC? Puzzles Diary Oddities ... e-mail Tom

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Homepage About News Exchange ... Contact RECREAT I ONAL MATH Puzzles Recreational Math Geometry Math Societies ... 4th Dimension Books by Martin Gardner available in the BOOKSTORE Conferences FOR SALE =author has participated in G4G Conference Math Hysteria: Fun and Games With Mathematics - by Ian Stewart - Recently Published 6/04 Wonders of Numbers: Adventures in Math, Mind, and Meaning by C. Pickover Mathematical Puzzles: A Connoisseur's Collection by Peter Winkler -5 Stars Perplexing Puzzles and Tantalizing Teasers/2 Volumes in 1 By Martin Gardner Mesmerizing Math Puzzles by Rudolf Kurchan Intriguing Puzzles in Math and Logic Dell Math Puzzles And Logic Problems - MAGAZINE Gifts - Educational Harry Potter Bertie Bott's Beans - Food Gift Item-Yummy " Each flavor is special and has its very own taste. " Sterling Silver X Weave Puzzle Ring Size 9 Rush Hour From ThinkFun (old name Binary Arts) Game Received Mensa award- User rating: 5 Stars from 88 reviews- Educational Items of Interest: Touching Numbers Puzzle : Created by Cihan Altay Kotani's Ant Problem : Paper by Dick Hess Quickies - Jaime Poniachik David Singmaster - Has compiled much material regarding Sources of Recreational Mathematic s **NEW** "Over the past 30 years I have compiled materials for teaching and for my own interests. I am happy to share these with interested people.

51. .:Math4Free:. Offers math puzzles and comics. http://www.math4free.net/

This is an site dedicated for kids ho whant to learn math...just here you will find math for free. An interactive web site that includes math flash cards, games and worksheets . Elementary and middle school kids can use these activities to improve their skills. Parents use our tools to allow kids to practice up on the areas the class is working on, or on the next grade level. These flash cards , games and worksheets are free for the general public.

52. Educational Software: Educational Game Software + English ( ESL ) Learning Softw Math learning software featuring arithmetic operations, math puzzles, and problem solving questions. http://www14.brinkster.com/rayedusoft/

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53. Math Puzzles http://members.aol.com/kidcross/math.htm

54. Math Pop Quiz Interactive math puzzles let students test their addition, subtraction, multiplication, geometry, division, and algebra skills. http://www.coolquiz.com/quizzes/math/

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55. Numeracy Teaching Ideas Activities help with numbers, measuring, geometric shapes, and problem solving using math puzzles and games. http://www.teachingideas.co.uk/maths/contents.htm

DHTML Menu, (c)2004 Apycom Welcome to Teaching Ideas Today is Numeracy - General The table below contains links to (and descriptions of) all of the General Numeracy ideas on this site. There are also links to some wonderful Numeracy toys and games, recommended books about Numeracy, and some links to other useful Numeracy sites. Don't forget to look at the other Numeracy pages: Number Activities Shape, Space and Measure Activities Data Handling Activities Key for symbols used on this page: Suggested for Ages 5-7 Suggested for Ages 7-11 Suggested for Ages 5-11 Age ranges are only suggestions, and many activities can be modified to fit children of different ages. To find out what the other symbols mean, click here General Numeracy Activities Maths Facts Outfits Make Maths fun by using outfits to review simple facts! Estimation with Shoes! Use an everyday object like shoes to support estimation skills. Detective Trail Send your children out on a detective trail and solve lots of Maths problems.

56. Free Puzzles -- Free Limited Publishing. Free Puzzles to Print. Play to sharpen your mind! math puzzles offer fun way to reinforce basic skills. Improve number sense and problem solving with http://www.kaidy.com/FreePuzzles.htm

Games Fractions Crystal Clear Puzzles ... Drawing Free Puzzles to Print: Witzzle Lite Witzzle Puzzle Generator More Ways 001 Numbers Insert 001 ... Witzzle Puzzle Free Puzzles to Print Play to sharpen your mind! Math puzzles offer fun way to reinforce basic skills. Improve number sense and problem solving with fascinating puzzles! Attention! Newspapers, Magazines, School Publications! Kaidy will authorize free limited publica tion permi ssion for use of our samples/puzzles. Our only requirement is that you send us a copy of your publication within 30 days of its publication date. (See Contact Us page for address.) Educators! You are authorized to make copies for your personal classroom use only. Games For Fun Witzzle Pro FraCard Tangrams Kaidy's Home ... Drawing

57. Dell Math Puzzles And Logic Problems strong Dell math puzzles and Logic Problems Magazine/strong features a variety of puzzles and problems to challenge and stimulate. strong math puzzles and http://www.magazinesofamerica.com/0808-6.html

Magazine Title Search: Dell Math Puzzles and Logic Problems Magazine features a variety of puzzles and problems to challenge and stimulate. Math Puzzles and Logic Problems include Figure Logics, Cross Sums, Number Place, Word Arithmetic, and a whole lot morecomplete with solving charts and detailed solutions. Each issue of Dell Math Puzzles and Logic Problems will sharpen your intellect and lift your spirits! Now Available for Delivery WorldWide! 6 Issues per year. Save 33%! Dell Math Puzzles and Logic Problems Cover Price: $29.94 Your Price: New/Renewal? New Renewal Dell Math Problems and Logic Problems: Two Year Subscription Cover Price: $59.88 Your Price: New/Renewal? New Renewal Dell Math Problems and Logic Problems: Three Year Subscription Cover Price: $89.82 Your Price: New/Renewal? New Renewal 0808-6-cd Dell Math Problems and Logic Problems: Canadian Subscription New/Renewal? New Renewal 0808-12-cd Dell Math Problems and Logic Problems: Two Year Canadian Subscription New/Renewal? New Renewal 0808-6-fd Dell Math Problems and Logic Problems: International Subscription New/Renewal?

58. Compare Prices And Read Reviews On Dell Math Puzzles And Logic Problems Magazine Epinions has the best comparison shopping information on Dell math puzzles and Logic Problems Magazine. Compare prices from across the web and read reviews http://www.epinions.com/content_69057941124

Join Epinions Help Sign In Magazine Subscriptions All Categories Advanced Search Home Media Magazine Subscriptions Dell Math Puzzles and Logic Problems Magazine Overall rating: Reviewed by 5 Epinions users Write a Review Compare Prices View Details Read Reviews ... Subscribe to reviews on this product Read Review of Dell Math Puzzles and Logic Problems Magazine Review Summary About the Author Feed Your Brain: Dell Math Puzzles and Logic Problems Jul 05 '02 (Updated Jul 05 '02) Author's Product Rating Pros many cross sums in each issue, all math and logic all the time Cons only six issues per year The Bottom Line If you like math then you'll love this magazine. If you enjoy mysteries and deduction you'll love this magazine. This isn't your typical puzzle magazine - it's better. Full Review Sadly most people seem to think math is this horrid thing they have to live through in school so they can get to the rest of their lives. It doesn't have to be that way. Math can be invigorating, provide a real brain rush. It can also be fun. Dell Math Puzzles and Logic Problems presents the fun side of math through a variety of games and puzzles. Published six times each year (in January, March, May, July, September, and November) the magazine is a mixture of these math puzzles and logic puzzles. Both types should appeal to the intellectuals among you, to those folks who like to exercise their brain even when a grade or promotion isn't on the line.

59. The Exhibitionists Interactive, practical math puzzles relating to the management of a museum exhibit. Sponsored by the (British) National Museums Liverpool. http://www.liverpoolmuseums.org.uk/nof/maths

Accessible version Hello. Welcome to our behind the scenes tour of National Museums Liverpool. I’m Rachel, a curator here. Today I’ll show you how we create a temporary exhibition . You will see lots of things that are usually hidden from the public. Along the way you can have a go at some puzzles – they’re the stages we go through to create a successful exhibition. It’s okay if you don’t want to do the puzzles – just enjoy the tour. If everyone’s ready we’ll begin. About this site Curator Someone who looks after the objects in a museum. The objects are usually divided into categories and we have a curator for each group, eg curator of British art, curator of birds and mammals, curator of the aquarium. Close Temporary exhibition Some of the exhibitions in our museums are always in the gallery when you visit. Others are only here for a short time and we call these temporary exhibitions. Close About This Site This site is based on the work of National Museums Liverpool. It uses very simple examples to give a basic outline of life behind the scenes at our eight museums. The prices and measurements in the games are made up to give you a taste of how we operate.

60. Dell Math Puzzles And Logic Problems Magazine Subscription : Magazines.com Magaz Dell math puzzles and Logic Problems magazine subscription from Magazines.com discount magazine subscriptions service. Save up to 80% off retail cover http://www.magazines.com/ncom/mag?mid=5077

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