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         Math Puzzles & Problems:     more books (43)
  1. Math and Logic Games a book of Puzzles and Problems
  2. Mind-Bending Puzzles 5 Knowledge Cards: Math and Word Problems by Terry H. Stickels, 2001-01
  3. Math Odyssey 2000: Puzzles, Mysteries, Unsolved Problems, Breakthroughs, and the People of Mathematics by Clement W. Falbo, 1994-01
  4. Multilink: Problem Solving: Games, Puzzles and Investigations (Multilink Math) by Stone, Stillman, et all 1993-12
  5. MORE MATH TEASERS: 196 PUZZLES AND PROBLEMS WITH SOLUTIONS AND EXPLANATIONS. by Joseph, illustrated by Arthur M. Kraft. Degrazia, 1986
  6. Math and Logic Games : A Book of Puzzles and Problems by Franco Agostini, 1986
  7. Word problem puzzle fun for general math classes (Copy masters) by Fred Pyrczak, 1987
  8. 5-Minute Math Problem of the Day for Young Learners: 180 Fast & Fun Reproducible Problems & Puzzles That Help You Build Early Math Skills Every Day of the School Year, Grades 1-2 by Betsy Franco, 2001-09
  9. Math and Mind Builders (Grade 1); Daily Problems & Puzzles to Strengthen Critical Thinking Skills
  10. Whodunit Math Puzzles
  11. Beginning math puzzles: Counting, adding, subtracting by Ellen Matlach Hassell, 1994
  12. Adding & Subtraction Puzzles (Math Skills) by R. Gee, 1994-09
  13. Problem solving with the programmable calculator: Puzzles, games & simulations with math & science applications by David L Dunlop, 1983
  14. Gifted and Talented Puzzles and Games for Reading and Math (Gifted & Talented) by Kaye Furlong, Nancy Casolaro, et all 1993-08

21. Math Worksheets, Puzzles, Printables, Problems, Test Prep
Algebra Worksheets Main Table of Contents, Algebra Word problems!, Arithmetic to Algebra. math puzzles math Crossnumber math Box math Sequences Number
http://www.edhelper.com/math.htm

Return to edHelper.com

Math Printables
Basic Math
Place Value
Addition Subtraction Multiplication ... Arithmetic to Algebra
Math puzzles: Math Crossnumber Math Box Math Sequences Number Word Searches ... Critical Thinking Puzzles
Build a Mixed Review Worksheet!
For edHelper.com subscribers. Sign up now by clicking here!
Select the skills to include:
Place Value Whole Numbers Addition Subtraction Multiplication Division by 1-Digit Division by 2-Digits Order of Operations (positive whole numbers) Understand Decimals (Part 1) Understand Decimals (Part 2) Add and Subtract Decimals Multiply Decimals Divide Decimals Beginning Algebra Number Theory Fractions Measurement Integers Ratios and Proportional Reasoning Percents Perimeter, Circumference, and Area Volume and Surface Area Decimals Inequalities Probability
Number of Pages (for each key) Select the number of pages: 1 page 2 pages 3 pages 4 pages 5 pages 6 pages Number of Keys Select the number of different printables: 1 key 2 keys 3 keys Answer Key Answer key also includes questions Answer key only gives the answers No answer key Algebra Mixed Review Worksheet For edHelper.com

22. Decimals: Printables, Puzzles, Word Problems, And Worksheets!
Division word problems Science problems (physics, biology, and chemistry) Decimal word problems review printable Addition math Box from math Box puzzles!
http://www.edhelper.com/decimals.htm

Return to edHelper.com

Decimal Worksheets x Build a Mixed Review Worksheet!
For edHelper.com subscribers. Sign up now by clicking here!
Select the skills to include:
Understand Decimals (tenths and hundredths) Understand Decimals (to thousandths) Add and Subtract Decimals Multiply Decimals Divide Decimals Decimals (Middle School) Decimal Word Problems
Number of Pages (for each key)
Select the number of pages: 1 page 2 pages 3 pages 4 pages 5 pages 6 pages
Number of Keys
Select the number of different printables: 1 key 2 keys 3 keys
Answer Key Answer key also includes questions Answer key only gives the answers No answer key Decimals Logic Printables Employees: hours worked and pay (decimals) Employees: hours worked and pay (pay differs by less than $1) Track team: distance traveled Track team: time to finish ... Snow accumulation Understanding Decimals Tenths Write each as a decimal (given: graphics, fractions, and word form) Given graphics, write the decimal (decimals greater than 1) Write each as a decimal (decimals greater than 1) Write each as a fraction Tenths and Hundredths Hundredths: Write each as a fraction and decimal Hundredths: Write each as a decimal Hundredths: Write each as a fraction Tenths and hundredths: Write each as a decimal ... Tenths and Hundredths Mixed Review Thousandths Thousandths: Write as a decimal Thousandths: Write as a fraction Thousandths: Write as a decimal (decimals greater than 1) Thousandths: Write as a fraction (decimals greater than 1) Tenths, Hundredths, and Thousandths

23. Math Forum: K-12 Problems, Puzzles, Tips & Tricks
Sets of math problems and puzzles, and computation tips and tricks to speed up your calculations. K12 math problems, puzzles, Tips Tricks.
http://mathforum.org/k12/mathtips/
Student Center
Teachers' Place
Calculation Tips
Problems ... Puzzles
See also the Math Forum's Internet Mathematics Library list of math problems and puzzles on the Internet, and our Teacher2Teacher FAQ: Tricks for Learning Math. Download an archive for local viewing of the following tips and tricks: Mac or Windows
Calculation Tips
Math Problems

24. The Math Forum - Math Library - Problems/Puzzles
math Library is a comprehensive catalog of Web sites and Web pages relating to the study of mathematics. This page contains sites relating to problems/puzzles.
http://mathforum.org/library/resource_types/problems_puzzles/
Browse and Search the Library
Home
Resource Types Ed. Materials : Problems/Puzzles

Library Home
Search Full Table of Contents Suggest a Link ... Library Help
Subcategories (see also All Sites in this category Selected K12 Problem and Puzzle Sites
By Topic By Level Arithmetic Elementary Algebra PreK-2 ... Discrete Math There are so many items in this category that we recommend using the keyword search and math topic or grade level menus to narrow down your results. See also our section of Daily/Weekly/Monthly Challenges
All Sites - 1420 items found, showing 1 to 50
  • $1000 High School Calculus Student Award (Math Chat) - Frank Morgan, MAA Online
    Solution to the challenge: Justin Smith calls 5939 a "right" prime because it remains prime after dropping any number of digits from the right: 5939, 593, 59, and 5 are all prime. How many right primes are there less than 1000? Is there a largest right ...more>>
  • $1000 Math Chat Book Quest (Math Chat) - Frank Morgan, MAA Online
    Solution to the challenge: On a beach in Oregon, at a certain moment, the very last bit of the Sun disappears below the horizon. The question is: Can I make that last bit of Sun reappear by jumping up quickly to my full height, or perhaps by very quickly ...more>>
  • 100 Percent! - Energy Conservation Enhancement Project
  • 25. Some Problems And Puzzles
    Some problems and puzzles. Inspired by various math books.
    http://www.cs.uidaho.edu/~casey931/puzzle/
    Some problems and puzzles
    Inspired by various math books
    Inspired by my friends
    • Mike Fellows is the mathematical inspiration behind MegaMath. He doesn't think that knowing a lot of mathematics is a prerequisite for having fun with mathematics. He has an amazing ability to translate complex mathematical ideas into puzzles or games. The unusual and sometimes funny stories and images that he uses to do so (such as "the long rubbery arm of mathematics" serve to show how amusing he finds much of mathematics to be. All of the mathematical ideas in MegaMath are his. In addition, here are some of his other favorites

    26. The Ultimate Puzzle Site! (puzzles, Riddles, And Quizzes: The Ultimate Puzzle An
    no mathematics) mathematical Pproblems (a little math) Harder mathematical problems (some more math) Logical puzzles BrainTeasers Complex problems The 1 st
    http://www.dse.nl/~puzzle/index_us.html
    Lots of challenging puzzles and riddles in various categories and exciting interactive quizzes and tests! The Ultimate Puzzle and Riddle Site!
    T HE U LTIMATE P UZZLE S ITE
    Rob van Gassel Jurgen Heijmans Edwin van Veldhoven
    Nederlandstalig (switch to dutch) Show navigation index!
    A S hort I ntroduction...
    W elcome to The Ultimate Puzzle Site, an initiative of three dutch former students. We hope you, and many other people, will share the excitement of puzzling. We guarantee that all puzzles and riddles on our site are interesting ( click here for a proof)! Don't hesitate to check this site frequently and find out what has been changed or added!...
    T he puzzles have been subdivided into the following categories: B asic P uzzles (no mathematics)
    H
    arder R iddles (no mathematics)
    M
    athematical P problems (a little math)
    H
    arder M athematical ... roblems (some more math)
    L
    ogical P uzzles ... uiz (testing your knowledge on extreme matters)
    T
    he nd Q ... uiz (testing your logical insight)
    B
    rain T ests ... xperiments (test your brain!)
    F
    unny P uzzles ... okes
    T he puzzles are marked with stars ( ) denoting the degree of difficulty of the given puzzle. Our

    27. Math
    original math lessons on story word problems, candy math of interactive lesson activities, games, and puzzles to coordinate with Harcourt Brace s K8 math series
    http://www.csun.edu/~vceed009/math.html
    This site has a new address. You will be automatically taken there in 10 seconds, or click the link below to go there right away. Please change your bookmarks and favorites. http://www.sitesforteacher s.com
    Math
    Lesson Plans Applications Board Games Organizations
    Lesson Plans
    Academy Curriculum Exchange (K-5). The Academy Curriculum Exchange offers 32 mini-lesson plans covering various math topics at the elementary school level.
    Academy Curriculum Exchange (6-8). The Academy Curriculum Exchange offers 13 mini-lesson plans covering various math topics at the middle school level.
    Academy Curriculum Exchange (9-12). The Academy Curriculum Exchange offers 8 mini-lesson plans covering various math topics at the high school level.
    Activity Search from Houghton Mifflin. Activity Search from Houghton Mifflin features a curriculum database where the K-8 teachers can search for math lesson plans/activities by grade level.
    Ancient Egypt Lesson Plans for Teachers. The Detroit Institute of Arts (DIA) provides a variety of cross-curricular lesson plans for grades 4-8 based upon the theme of ancient Egypt. Formath teacher-created plans, click here
    Apple K-12 Curriculum.

    28. Jon Basden's Web Site
    Percent problems (4); Rate problems (4); Toothpick puzzles (11). Problem of the Day Archives The links below are problems that were used in math classes at
    http://www.highland.madison.k12.il.us/jbasden/problems/
    Math Problems Math Problems by Category The links below are to pages that contain problems that are original, modifications of existing problems, or submitted by Highland Middle School students. Problem of the Day Archives The links below are problems that were used in math classes at Highland Middle School from during the 1997-2000 school years. Most of the problems are not original, and efforts have been made to cite their sources where known. If you recognize a problem that is not cited or not properly cited and the problem is yours, or if you know the source, please send an email to jbasden@mac.com , and the correction will be made promptly. Jon Basden - jbasden@mac.com
    document.write(document.URL);
    Highland High School

    Friday, March 15, 2002 11:19 AM
    Home: http://www.highland.madison.k12.il.us/jbasden

    29. Mteverest
    Everest math puzzles created by Paula Fleischer Learn about Everest, climbing, Nepal and Sherpa culture while solving increasingly difficult math Word problems.
    http://mteverest.homestead.com/
    Learn about Mount Everest, climbing, Nepal, Sherpa culture, and internet navigation while solving these increasingly difficult Math Word Problems.
    Mount Everest Math Puzzles This site was created and is maintained by Paula Fleischer, the Technology Teacher at Peachland Avenue Elementary School in Newhall, CA.
    Comments and Questions can be submitted below. Remember to include your email address if you want a response.
    Since Edmund Hillary and Tenzing Norgay reached the top of Mount Everest in 1953, many people have tried to climb the highest mountain in the world.
    Do these Math Puzzles to learn more about Mount Everest. Hits: This page was last updated on: January 20, 2004
    If you prefer to use your regular email program, you may send a message to: SherpaEverest@yahoo.com April 23, 2001 These kind words have been written about Mount Everest Math Puzzles. Hello Mrs. Fleischer, I just wanted to tell you that these math puzzles are just wonderful .... I think you should start working on another puzzle website.!
    Yasin B., grade 6

    30. Math.com Puzzles, Games, And Contests
    (Alex Bogomolny). K12 problems and Puzzle Sites - Web sites with problems, challenges, and puzzles sorted by grade level and topic. (math Forum).
    http://www.math.com/students/puzzles.html
    Home Teacher Parents Glossary ... Email this page to a friend More Games Peg Solitaire
    Fiver

    Hare and Hounds

    Tower of Hanoi
    ...
    Maze Generator

    Resources Cool Tools
    References

    Test Preparation

    Study Tips
    ...
    Wonders of Math

    Search Exercise Your Brain and Have Fun! Puzzles and Games 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 Cut-the-Knot Interactive mathematics miscellany and puzzles. (Alex Bogomolny) K-12 Problems and Puzzle Sites - Web sites with problems, challenges, and puzzles sorted by grade level and topic. (Math Forum) The Amazing Mathematical Object Factory - Magic squares and more, with information and history. (Canada's SchoolNet) Famous Puzzles - Exercise your brain with problems that have kept people guessing for centuries! (Math Forum)

    31. Math Puzzles & Problems
    One of the numbers in the last square in each problem has been replaced with a If 8 web programmers can format 1001 puzzles in 429 minutes, how long does it
    http://www.puzz.com/1001/math.htm

    Answer

    Answer
    HELLO, GOODBYE!
    Answer
    PROBABILITY UNIVERSITY
    Answer
    A DOZEN EDGES
    Answer

    6. A cube is made of a white material, but the exterior is painted black. If the cube is cut into 125 smaller cubes of exactly the same size, how many of the cubes will have 2 of their sides painted black? Answer FOLD IN HALF
    Answer
    PAY RAISE/PAY CUT
    Answer
    9. Two trains, each two miles long, enter two one mile long tunnels that are two miles apart from one another on the same track. The trains enter the tunnels at exactly the same time. The first train is going 5 miles/hour, and the second train is going 10 miles/hour. What is the sum of the lengths of the two trains that will protrude from the tunnels at the exact moment that they collide, assuming that neither train changes its speed prior to collision? The trains are on the same track headed in opposite directions (i.e. directly toward one another). Answer 10. If the same functions are applied to reach the results in each of the three sets of numbers, find what number should replace the ? in the last set:
    Answer
    11. You have 1,432 feet of fence that must be strung out in a straight line. A fence post must be placed for every 4 feet of fence, so how many fence posts will be needed?

    32. Math Forum Internet Mathematics Library: New Location
    forum.swarthmore.edu/~steve/steve/mathpuzzles.desc.html BOBCAT s Puzzle and Problem Links for 3rd 5th Grade Students3rd Grade - 5th Grade Main Page math - puzzles and problems (3rd Grade - 5th Grade Level) K-12 math problems, puzzles, Tips Tricks
    http://forum.swarthmore.edu/~steve/steve/mathpuzzles.html
    The Forum Internet Resource Collection
    has become
    The Internet Mathematics Library
    Please change your links and bookmarks to: http://mathforum.org/library/
    Library Home
    Full Table of Contents Suggest a Link ... Library Help
    We now offer many more categories, selected starting points, updated entries, and powerful search and browse functions. We hope you find this enhanced presentation helpful as you search for mathematics sites on the Internet. Please search and browse the new Library. Here are a few shortcuts: We are now cataloguing only mathematics and math education sites.
    Home
    The Math Library Quick Reference Search ... Contact Us
    http://mathforum.org/
    webmaster@mathforum.org

    33. Dell Math Puzzles And Logic Problems - Compare Prices & Read Reviews At DealTime
    Compare Dell math puzzles and Logic problems prices from across the Web and read Dell math puzzles and Logic problems reviews from other consumers at DealTime
    http://www.dealtime.com/xPC-Dell_Math_Puzzles_and_Logic_Problems
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    Magazine Subscriptions All Categories Books Cars Electronics Kids and Family Movies Music Office Video Games Back to: Magazines Magazine Subscriptions Dell Math Puzzles and Logic Problems Magazine: Compare Prices
    Read all 5 reviews
    Write a review at Epinions.com
    Features: Price range: Sort by price: Low to high High to low var dH;var mLCT=1;var dNCT=2;var bCT=3;var mNCT=4;var mPCT=5;var d=document;var sp='';
    See 18 matches at 15 stores Sort by : Store name Store rating Price Featured Product d.write('') Dell Math Puzzles and Logic Problems
    Dell Math Puzzles and Logic Problems offers a variety of puzzles and problems to challenge and stimulate. 6 issues a year
    MagazineCity
    8 store reviews
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    d.write('') d.write('') MagazineCity Featured Product d.write('') Dell Math Puzzles and Logic Problems - 6 Issues *LOWEST AUTHORIZED PRICE* FREE GIFT CARD MAILED WITHIN 24 HOURS. 100% Risk-Free for 90 Days. Low Price Guarnatee. 100% Money Back Guarantee. No tax. Free shipping. USA addresse... GetSubscriptions.com Magazines

    34. Dell Math Puzzles And Logic Problems Magazine Reviews - DealTime
    Read Dell math puzzles and Logic problems Magazine reviews as well as extensive comparison shopping information on the Dell math puzzles and Logic problems
    http://www.dealtime.com/xPR-Dell_Math_Puzzles_and_Logic_Problems
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    Overall Rating: Write a review at Epinions.com See full product specs
    Member Ratings and Reviews
    (5 total) Sort by... Most Recent Highest Rating Lowest Rating AUTHOR'S RATING Feed Your Brain: Dell Math Puzzles and Logic Problems
    By:
    quasar
    July 5th, 2002
    Pros: many cross sums in each issue, all math and logic all the time
    Cons: only six issues per year
    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. AUTHOR'S RATING Exercise for the Brain
    By:
    tuggy June 20th, 2001 Pros: Great puzzles to challenge the mind. Cons: Only published 6 times a year Bottom Line: Puzzles to challenge the brain, and to keep you entertained. AUTHOR'S RATING Even if you're not a rocket scientist By: Coraoccllo December 5th, 2000

    35. The First Grade Backpack - Arithmetic
    Number Cracker find the missing number in the sequence; Numbertime fun math puzzles; math Stories Choose from many word problems.
    http://www.geocities.com/EnchantedForest/Tower/1217/math1.html
    Arithmetic Activities

    36. Dyllan's - A To Z Activity Dinosaur Page
    Dinosaur puzzles Solve the math problems, and then substitute a letter for each number, from the code to find the Dinosaur Name.
    http://www.geocities.com/EnchantedForest/Dell/2237/dino/puzzles.html
    Dinosaur Activities
    A to Z - Infomation Color Pages Dino Mazes and Dot-to-Dots
    Dinosaur Math Puzzles Crossword Puzzles
    Dinosaur Information Pages

    Dinosaur Puzzles
    Solve the Math Problems, and then substitute
    a letter for each number, from the code to find
    the Dinosaur Name. There is a Javascript Version,
    where you can find out the answer before you leave,
    Dinosaur - Subtraction Puzzle 1
    Dinosaur - Subtraction Puzzle 2 Dinosaur - Subtraction Puzzle 3 Dinosaur - Subtraction Puzzle 4 ... Dinosaur - Multiplication/Division Puzzle 2
    Dinosaur Crossword Puzzles
    Along with the answers to the puzzle. Brachiosaurus Crossword Puzzle Giganotosaurus Crossword Puzzle Triceratops Crossword Puzzle Tyrannosaurs Rex Crossword Puzzle Last Updated May 3, 1999 Dyllan Email: Willie-dyllan@geocities.com Home Page: http://www.geocities.com/~willie-dyllan/

    37. Math
    Games and Mind Bender puzzles Aunty math problems; Brain Binders paper Brain Games; Megamath Activities; Mental math Tricks; Simon Says Puzzle (Click on
    http://www.k111.k12.il.us/king/math.htm
    Back to King's Home Page King's List of On-line Math Activities
    click on Calculator to see links this page was compiled
    and is maintained by
    Mrs. DeWitt
    Many of these programs need shockwave: (if you don't have it ..it is free)
    Beginning Math Activities
    Basic Facts Basic Math Skills Factors/Multiples ... ISAT 8th Grade Word List Beginning Math Activities
  • BBC Education's Number Time Games
  • Simple Add and Subtract
  • Test the Toad + and - problems with numbers 1-15) Little Animals Activity Center ( interactive number games for addition and subtraction) Number Recognition/Sequencing
  • Dart Board Level 1 (recognize numbers 1-9) Find the Number (Recognition activity for numbers 1-10) Mend the Number Square ( Place missing numbers on 1-100 grid) Find One More (matching game) Snakes and Ladders (1 player or 2 player activity.. works like chutes and ladders) Watch Addem (Number Movies) Number Songs FunBrain Activities
  • Number Recognition/Sequencing
  • Bunny Count ( count and match numbers and characters) One False Move (sequence numbers from lowest to highest) Guess the Number (guess number with high low clues) Learning Planet Activities
  • Number Recognition/Counting/Sequencing
  • Count Your Chickens ( counting activity) 1 2 3 Order (what comes next... up to 10)
  • 38. Math Puzzles For Kids
    Fun and Challenging math problems for the Young, and Young At Heart. If you know of other problems/puzzles that young students would enjoy, please send them
    http://eklhad.net/funmath.html
    var r = '857';
    Fun and Challenging Math Problems for the Young, and Young At Heart
    These problems are aimed at junior high and high school students with a flare for mathematics and logic. These are "real world" problems, rather than abstract riddles about sets or trigonometry etc. The questions should be accessible to a wide audience, even if the answers are not. When you find a question that interests you, it's tempting to just read the answer at the end of this web page, but please don't - that would spoil the fun. Instead, think about the problem in your spare time for a few days. Talk about it with your friends. Then, if you're really not getting anywhere, or you think you've got the answer, come back and read the answer. Educators might want to present the problem on Monday and talk about it on Friday.
  • A school has 1,000 students and 1,000 lockers, all in a row. They all start out closed. The first student walks down the line and opens each one. The second student closes the even numbered lockers. The third student approaches every third locker and changes its state. If it was open he closes it; if it was closed he opens it. The fourth student does the same to every fourth locker, and so on through 1,000 students. To illustrate, the tenth locker is opened by the first student, closed by the second, reopened by the fifth, and then closed by the tenth. All the other students pass by the tenth locker, so it winds up being closed. How many lockers are open?
  • A checkerboard is missing two of its squares. The lower left square and the upper right square are gone. That leaves 62 squares on the board. You are given 31 dominoes. Each domino is a rectangle that can cover exactly two squares on the checkerboard. Can you place all 31 dominoes on the checkerboard, so that all 62 squares are covered?
  • 39. Homework Center - Mathematics
    down word problems for grades 5 to 12. puzzles, Quizzes and Flashcards. AIMS Puzzle Corner http//www.aimsedu.org/Puzzle/index.html 12 fun math puzzles a year
    http://www.multcolib.org/homework/mathhc.html

    School Corps
    Library Catalog Library Databases Ask Us! ... Tareas Escolares
    Mathematics:
    Mathematics Megasites
    Algebra

    Geometry

    Mathematician Biographies
    ...
    Unit Conversions
    Mathematics Megasites
    The Abacus
    http://www.ee.ryerson.ca:8080/~elf/abacus/
    Construction and anatomy of an abacus. Basics of how an abacus works.
    Ask Dr. Math: Elementary School Archive
    http://mathforum.org/library/drmath/drmath.elem.html
    Answers to lots of elementary math questions.
    Ask Dr. Math: High School Archive
    http://mathforum.org/library/drmath/drmath.high.html
    Answers to lots of high school math questions.
    Ask Dr. Math: Middle School Archive
    http://mathforum.org/library/drmath/drmath.middle.html
    Answers to lots of middle school math questions.
    Calculating Machines
    http://www.webcom.com/calc/
    From an 1885 adding machine and an abacus to history of the machines from 1623 to 1970.
    Interactive Mathematics Miscellany and Puzzles http://www.cut-the-knot.org/content.shtml
    Interactive activities from all areas of math.
    Interactive Mathematics Online
    This site is great for helping in high school math, especially in geometry.
    Math League Help Topics http://www.mathleague.com/help/help.htm

    40. Bsuvc.bsu.edu/~d004ucslabs/
    La página de juegos de ingenio, acertijos y recreaciones Crosswords and crossword variants, anagrams, doublets, trivia, riddles, chess problems, math puzzles, logic puzzles, wordsearch puzzles
    http://bsuvc.bsu.edu/~d004ucslabs/

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