81. Mathematical Puzzles Mathematical Puzzles Your guide to the best web sites for math puzzles. http://thinks.com/webguide/math-puzzles.htm

Sponsored Links Electronic Sudoku Multiplayer Games Bingo Brain Games ... Home Mathematical Puzzles Interactive Mathematics Miscellany and Puzzles Excellent. Ken Duisenberg's Puzzle of the Week A good archive to dip into. MathPuzzle.com The webmaster, Ed Pegg Jr, is a twenty year member of the National Puzzler's League, and frequently contributes to the New York Times crossword, Games, and National Public Radio's Sunday Puzzler. This fantastic site is packed full of interesting goodies, and there's a weekly math puzzle. The MathSoft Math Puzzle Page Mathematical puzzles featured here have been previously published in Allan Gottlieb's column in the Tech Review. Nick's Mathematical Puzzles The puzzles presented here are selected for the deceptive simplicity of their statement, or the elegance of their solution. They range over geometry, probability, number theory, algebra, calculus, trigonometry, and logic. All require a certain ingenuity, but usually only pre-college math. Some puzzles are original. The Null Set - Mathematical Puzzles A good selection of puzzles, by Guy Kindler at Tel Aviv University, graded from simple to tough - but most requiring some undergraduate maths knowledge. Number and Word Puzzles 44 monthly puzzles provide entertainment and education for all ages on this Australian website.

82. Amby's Education Site -- Math Puzzles & Learning Activities Amby s Education Resources Math Puzzles and Learning Activities. http://amby.com/educate/mathgame.html

Amby's Education Site: Learning Activities Applied Math / Simulations Origami Polyhedra Fractals ... Other Math Resources Applied Math / Simulations EduStock Edustock is designed to teach people of all ages about the stock market. It includes: Tutorials on the stock market How to pick good stocks Company Profiles: Information to help you research companies FREE realtime Stock Market Simulation Links to other sites with useful Stock Market info EduStock http://tqd.advanced.org/3088/welcome/welcomenf.html The Diet Problem: An Application of Linear Programming Check-off the foods you're willing to eat and the program will find the cheapest combination of them meeting a person's daily nutritional requirements. Provides numbers of servings, cost, percentages of nutrients from different sources, etc. in both table and pie chart form. PLEASE consult your doctor before embarking on any diet especially one, for example, including 10 servings of Air-Popped Popcorn!! Argonne National Laboratory Mathematics and Computer Science Division http://www.mcs.anl.gov/home/otc/Guide/CaseStudies/diet/index.html

83. Math Games, Fun Math, & Math Puzzles Online & Books List of websites with lots of online math games, fun math topics, or fun puzzles . http://www.homeschoolmath.net/online/math_games_fun.php

Subscribe to Maria's Math news - filled with math teaching information Two Freebies - Sep 2010 mailing October 2010: Multiplication tables, Kinetic Books, PEMDAS, estimation... Latest from my blog Math teaching videos My videos at YouTube show you how to teach concepts. How to teach long division Worksheets Hover your mouse above to open a menu of various worksheets you can generate for free! 1st grade 2nd grade 3rd grade 4th grade ... Curriculum Advice, reviews, and resources to help you choose a math curriculum! Math Mammoth How to choose Is your math curriculum coherent and logical? Scope and sequence chart ... Online math games, tutorials, and activities Games you can play online, interactive tutorials, fun math websites and more. Arranged by topic/level for ease of use. Addition and subtraction Clock Money Multiplication ... Articles Learn how to TEACH concepts or about general concerns in math education. Four habits of highly effective math teaching How to help a student who is behind in math Do's and don'ts of teaching problem solving Kindergarten math ... Reviews In-depth reviews of math products A list of free message boards, math help websites, and online tutoring services.

84. Math Puzzles And Games For Kids Math puzzles and games are a great way to reinforce learning and develop problem solving. http://www.green-planet-solar-energy.com/math-puzzles.html

What's New? Solar And You The Environment Kids' Stuff Vehicles Some Theory Site Stuff ] Subscribe To This Site Math Puzzles and Games for Kids Math puzzles and games are a great way to reinforce learning and develop problem solving skills. By using their math skills in a game form, your child will develop a more positive view of maths in a safe yet challenging environment. This section is aimed at reinforcing basic skills. For learning and practice of the basic skills, see the Math Help section. Free Math Games Quick to learn and fun to play, these math games will help your child with all areas of basic maths skills. Being strong with basic skills provides your child with a platform for ongoing success in maths. Addition and Subtraction. Pairs to Eleven. With a simple deck of cards you can help your child memorise number pairs that add to eleven. Fun and quick, this game will get your child's brain switched on. Memory Elevens. This is a memory game using pairs that match to eleven. Good for building number skills and tracking within a grid. The game is scalable so you can give your child a sense of success regardless of age. Game of 31 is a fun addition and strategy game that only requires a deck of cards and pencil and paper. This is a great game for reinforcing addition facts in a fun and challenging way.

85. BrainBashers : Puzzles And Brain Teasers Brain teasers, puzzles, online games, optical illusions and jigsaws. http://www.brainbashers.com/

Home Puzzles Games Illusions ... Log In BrainBashers is a collection of brain teasers, puzzles, riddles, games and optical illusions. BrainBashers has thousands of puzzles and brain teasers, and with new material added every single day, including games and optical illusions, you can be sure there's always something to do. With over one hundred awards, BrainBashers is the place to spend a boring Sunday afternoon training your brain. Fridays and weekends are special on BrainBashers. You can access the Weekend Specials on the ' Today @ BrainBashers ' page. If you enjoy BrainBashers, please tell your friends. If not, tell us! Fun Fact Today's fastest supercomputer is over 6,000 times faster than the average home computer. Odd Word Dendrology - the study of trees. BrainBashers features brain training delights such as puzzles jigsaws mazes logic and mind riddles ... brain teasers and so much more. There's Common Answers and so many games to play, you could be here for days! Send A Postcard Link To BrainBashers Daily Gubbins Email Teachers ... Weekends @ BrainBashers Question Of The Week Can you play tennis?

86. Jim Loy's Puzzle Page I discovered your site looking for info on Figure Logic puzzles. Stereograms David Coles Triangle Puzzle Math Maze. My original puzzles http://www.jimloy.com/puzz/puzz.htm

Go to my home page Jim Loy's Puzzle Page Also see my Mathematics pages. My puzzle pages have been chosen, by Learning in Motion , as one of the top ten educational sites on the WWW (for October 2000). I received this email: I discovered your site looking for info on Figure Logic puzzles. It's very nice! I am a pretty capable puzzle solver. It is because of you, I think, that I have become such a fan of Word Arithmetic. I am now more willing to make a table and guess things. Thank you for existing! Number Puzzles: Classic puzzles: NEW Archimedes' Cattle Problem NEW Number Magic Four Fours Eight Loaves of Bread The Fly and the Bicycles ... Chinese Rings NEW The Missing Dollar Nim in my Mathematics pages A Clock Puzzle The High Low Game More recent puzzles: A Couple of Mensa Puzzles The Case of the Missing Divisor Sally's Age Eve Did Talk ... Sum of n Consecutive Integers in my Mathematics pages Not Much of a Puzzle Word Arithmetics: Solving Word Arithmetics (the basics) Advanced Word Arithmetics Word Arithmetics - part 3 Word Arithmetics - part 4 Word Arithmetics - Advice By eMail ... Word Arithmetics - Part 8 (a tough one) Word Arithmetics - Impossible?

87. MazeWorks - Java Games And Puzzles Online playable puzzles and games written in Java, and an interesting maze generator program. http://www.mazeworks.com/home.htm

MazeWorks Daily Chess Problem A new problem every day English 16 A delightful puzzle created in the 19th century by Sam Loyd, described by Martin Gardner as "America's greatest puzzlist." Fiver A simple and surprisingly addictive puzzle. I named it after a character in one of my favorite novels, Watership Down Peg Solitaire When we were kids, my sister and I played this as a board game called Hi-Q . I named this version after her. Sliders A couple of famous sliding block puzzles, a not-so-famous one, and an infamous one. Tower of Hanoi The classic puzzle, a favorite of programmers and Buddhist monks. Hare and Hounds A 19th-century board game invented in France, also called The Military Game . It was popular among French army officers during and after the Franco-Prussian war. Hex-7 An elegant game of strategy invented in the 1940's, Hex is no longer available commercially but has recently seen an increase in popularity. TacTix Created by the brilliant Danish inventor Piet Hein, TacTix is a variation of Nim, one of the oldest of mathematical games.

88. Math Puzzles Prime Number Puzzles — 1. How many of the three digit numbers that can be made from all of the the digits 1, 3 and 5 (used only once each) are prime? http://2000clicks.com/MathHelp/Puzzle.aspx

Navigation Home Search Site map document.write (document.title) Contact Graeme Home Email Twitter Math Help Math Puzzles Contents of this section: Math Puzzles Unsolved Problems 2004 Logic Quiz 2004 State Logic Quiz ... Arithmetic Sequence of Squares Description of these pages Unsolved Problems — 36 (or more) problems, which until the past ten years or so have remained unsolved. Each of the problems is simple enough that it is accessible to non-mathematicians. 2004 Logic Quiz — The Archdiocese of Los Angeles (a division of the Catholic church) conducts an annual event for middle school children (ages 11 through 14) called the Academic Decathlon. This event consists of a number of tests, including the logic quiz, this one from 2004. 2004 State Logic Quiz — After our school won the Archdiocese of Los Angeles Academic Decathlon, we went on to the State competition, where we took 2nd place in the Logic Quiz, and 2nd place overall. Reciprocal Polynomial — Find values of a and b for which x + ax + bx + ax + 1 = has at least one solution.

89. Math Puzzles/problems Jan 1, 1998 Problems And Puzzles. Some of these are very simple, some are not so simple, .. Math Problem Sites. Moscow 57th School in Russian http://sds.podval.org/puzzles.html

Problems And Puzzles Some of these are very simple, some are not so simple, some are just jokes. (from Adam Wasserman) What is the degree of the highest exponent of K when you complete the operation: (K-A)(K-B)(K-C)...(K-Y)(K-Z) solution (from Ilya Sharapov) Prove that for any integer n the number [(2+sqrt(3)) n is odd. ( [x] is the integer part of x solution 2 kids, John and Jim, are running on an escalator (a moving stairway). John is running three times as fast as Jim, and by the time they are off the escalator, John has stepped on 75 stairs while Jim has stepped on 50 stairs. How many stairs does the escalator have? How is its speed related to the speed of the boys? Were they running with or against the escalator? solution Consider a sequence of n+1 integers a , a , ..., a n such that a k j . I.e., a is the number of zeros in the sequence, while a in the number of 20-ies in it. E.g., the sequence of length 4 satisfies the condition: these is only one zero there, so a , there are two ones, so a , there is one two, so a , and there are no threes, so a . Describe all such sequences. solution (from Bruno Haible Prove that for any positive integer n, the finite product

90. Math Games And Puzzles Online and printable Math games and logic puzzles. http://www.akidsmath.com/mathgames/index.html

A Kid's Math - A Play and Learn Math Site with resources for kids and their teachers Seasonal Puzzles and Games Other Games Shape Lay Game Use the shapes to fill in the picture. Whack a Difference Something's different about one of the objects. Find the difference and click on the object that is different from the other two. The faster you find it and click, the higher you score. Shape Swap Game Swap the locations of the circles and the triangles using as few moves as possible. Mini Golf Game Use the mouse to set the direction and the force of the golf ball. Rubik Snake Game Twist the blocked snake to make the shape that is shown. Tangram Puzzle Put the seven pieces of the puzzles back together to make a square. 15 Slider Number Puzzle Move the numbers, 1-15, in the correct order. Number of moves is recorded and the timer is on. Download a 15 slider puzzle. (Windows only) A Kid's Math A Kid's Heart Story It A Kid's Photo Math Games and Logic Puzzles Kakuro Puzzles Online Puzzles : Almost 300 online kakuro puzzles to play - addition and multiplication. Choose a puzzle to play or let the computer select a random puzzle from the category of your choice. Printable Kakuro Puzzles : Arithmetic puzzles to print. As with the online puzzles, you can choose the puzzle to print or you can have the computer select a random puzzle from the category of your choice.

91. Perplexus.info :: Logic Puzzles, Brainteasers, Riddles And Math Tricks Oct 29, 2010 A forum and collection of brain teasers, logic problems, math problems, paradoxes, science games, probability, riddles, and geometric shapes http://perplexus.info/

All about flooble fun stuff Get a free chatterbox ... Avatars perplexus dot info Home Welcome to perplexus.info , flooble's perplexing puzzle portal. Here, we collect all sorts of puzzles, from simple logic questions and word tricks to in-depth math problems like probability and geometry. Click around and see if your brain is up to the task! If you're new here, make sure you sign up so that you can leave comments and submit your own problems! Categories All Problem Categories Latest: Data Disorder (in Numbers A certain function is of the form n*k a -m*(k-b) c , where all variables are integers. Results are computed for the function as k is increased by increments of 10 from some initial number, t . As the results become very large, it becomes impracticable to print-out every digit, so that the numerous leading digits are redacted as xxx. A section of the print-out, containing the 451st to 460th results, reads as follows: There is reason to suspect that, although the respective values of these results have been correctly recorded, their order (451-60) may have become scrambled.

92. Fun Math Games - Puzzles For Kids Math Puzzles. Maths Puzzles. Math Puzzles for Kids. 2x3. Dog, 3x4. Giraffe, 4x6. Lion, 5x9. Monkey. 2x4. Lions, 3x5. Leopard, 4x7. Elephant, 6x7 http://www.scweb4free.com/mathpuzzles.htm

Math Puzzles for Kids Dog Giraffe Lion Monkey Lions Leopard Elephant Gorilla Camel Cat Monkeys Elephant Cheetah Monkey Tiger Tiger Chick Parrot Rhinoceros Dolphin Eagle Tigers Monkey Lions Elephant Zebra Giraffe Dog

93. Math Puzzles Parsimonious Pirates. Thirteen pirates go on an extended voyage, pillaging and plundering from Africa to Asia. By the end they have quite a stashtoo much http://www.cs.cmu.edu/~smagill/puzzles.html

94. Welcome To Discovery Education's Puzzlemaker! Create Crossword Puzzles, Word Sea Create and print customized word search, crisscross, math puzzles, and more— using your own word lists. Like it? Buy it! Get the Puzzlemaker CD-ROM for your http://puzzlemaker.discoveryeducation.com/

Classroom Resources Home Resources Professional Development STORE ... Siemens Science Day var addthis_pub="sarafisher"; Classroom Resources Puzzlemaker Word Search Criss-Cross Double Puzzles Fallen Phrases Math Squares Mazes Letter Tiles Cryptograms Number Blocks Hidden Message Welcome to Puzzlemaker! Puzzlemaker is a puzzle generation tool for teachers, students and parents. Create and print customized word search, criss-cross, math puzzles, and more—using your own word lists. Like it? Buy it! Get the Puzzlemaker CD-ROM for your classroom with lots of extra features, including: • Searchable Merriam-Webster dictionaries • Over 350 clip-art images Make a puzzle now! It’s free! Choose a type of puzzle from the list below and make your own puzzle online for classroom or home use. Word Search Criss-Cross Double Puzzles Fallen Phrases ... Hidden Message Try a Pre-Made Puzzle Test Your Green IQ Math Mind Game Parts of Speech It’s that time of year again... Time to refresh your classroom and re-energize your students. That’s what

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