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Reference And Resource
A great resource for classroom teachers, students and school librarians. Use these
pages for individual research or classroom projects.
Be sure to bookmark these resources so you can return to them later.
The Solar System
A listing of fun facts and trivia about our solar system's planets.
Math Tutoring Service
The Problem Site's administrator, Douglas Twitchell provides math tutoring services for high school students.
Slick Math
Interesting math problems and brainteasers which have surprisingly simple and elegant solutions and proofs.
Codes and Secret Messages
Learn about a variety of ways to encode messages, and try out the encoder-decoder! Includes backwards codes, shifted codes, binary, hexadecimal and matrix codes.
Beginner Programming Tips
A few little tips and tricks that will help new programmers keep their code neat and clean, easy to read, and fast executing.
The Golden Ratio
Everything a high school student would ever want to know about one of the most fascinating numbers they'll ever meet.
Search It Out
Search It Out Quizzes are open ended internet quests, with students using the Google "Safe Search" bar to find answers to questions.
Problems and Brainteasers
An archive of weekly math problems and brainteasers. Submit your own solution and earn points.
Resources on Other Sites
Each of these off-site resources will open in a new window.
Puzzler Blog
Get information about what is new on this site, or its sister puzzle sites - Quote Puzzler and Tile Puzzler
Anti Spam Site
This site has all kinds of information about spam (not the luncheon meat!) and how to deal with it, as well as some amusing stories about spam.
Ask Doug
Doug, the designer and administrator of this site occasionally fields questions about about a wide variety of subjects. If you can't find the answer you're looking for, go ahead and send Doug an email.
Educational Product Reviews
This is a great place to find out about fun educational games, and puzzles. All reviews are written by members in good standing at one or more of the Puzzler Sites.
Glimpses of Eden
A site with original acrylic paintings and scenic photography framed at affordable prices.
Lousy Website
This is a fun way of exploring all the mistakes beginning website designers make when creating websites.
Amateur Hikers
This website has a variety of useful and interesting geography information, including elevation, latitude and longitude of mountains all over the world. Students can even write up descriptions of mountains to be posted on the site.
Math Problem Writer
If your school, region or state math competition needs a problem writer, Doug has been writing competition problems for many years. Contact him for information and prices.
Fifteen Minutes of Fiction
Hundreds of writers have joined this site with thousands of writing samples. Visit each week for the Weekly Writing Prompt!
Articles for Educators
A website where teachers can post lesson plans and classroom activity ideas. Only clear and well written articles are posted, so readers don't waste their time browsing garbage to find useful ideas.
SEO Scam Watch
An informational site that provides information about scams that SEO (Search Engine Optimisation) Specialists pull.
DouglasTwitchell.com
Links to all the websites by the creator of The Problem Site, plus a few fun tools.
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Printable
Hangman
Picture Word
Four-Scramble
Word Search
Blackberry Game
Telephone Game
Strange Hangman
Word Grid
Secret Word
Scrambled Word
One of These
Entrapment
Adders!
Zap!
Side By Side
One To Ten
Sub Triangles
Magical Squares
Math Scramble
Secret Number
Secret Number 2
Fractional Hi Lo
Concentration
Monty Hall Game
Trio Match
Treasure Hunt
Pirate's Map
Fizziks
Tilt
Zero Gravity
Easter Egg Hunt
Quad Puzzle
Tic Tac Toe
Rotating Block
Math Tutoring
The Solar System
Codes
Slick Math!
The Golden Ratio
Programming
Search It Out!
Brainfood
Math HS
Maine Page
Calculus Page
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