Critical Thinking Puzzels

1. Aunty Math - Every other week is a new math challenge for Aunty Math's niece and nephews. These challenges come in the form of story problems. Your class can post their solutions and strategies and look at others answers also. Past archives with answers. Grades 1-6
2. Brain Binders - All you need is a sheet of paper and a brain. Links containing a puzzle with a finished picture. Your goal is to fold the puzzle into a shape with a solid color on each side.
3. Brain Booster of the Day presented by DiscoverySchool.com - The really cool thing about the list is that it is organized by types of thought processes.
4. Brain Den - many math riddles and puzzles
5. Brain Metrix - Train your brain; many puzzles and games
6. ALFY's Brain Teaser of the week - This page contains brain teasers for the last four weeks. Answers are included.
7. Braingle - Brain Teasers, Riddles, Exercises, Games, Forums and more... Some of the coolest features are only available to registered users, but its free to sign up.
8. Brain Teasers and Math Puzzles - This page contains the ever-growing list of brain teasers and math puzzles on Syvum-Online Education and Interactive Learning. All the brain teasers and math puzzles are interactive with immediate scoring. The brain teasers and math puzzles as well as their explanations use dynamic content to provide continuous learning and entertainment.
9. Brain Bashers - A collection of brain teasers, games and optical illusions. This site is usually updated with at least 5 new teasers each Sunday.
10. Brain Food - This site doesn't change weekly but there is a wide selection to choose from that should keep you busy all year.
11. Brain Twisters - A ten question quiz you can try by yourself or with a friend. There are two versions - one for middle school students and one for elementary students.
12. Creative Puzzles - The purpose of this web site is to promote creative and cognitive thinking
13. Cyberchase - Critical thinking games. These do not change but each one is a challenge !
14. Free Online Games and Puzzles - Daily Crossword Puzzle
15. Free Online Games and Puzzles - Daily Codebreaker Puzzle (a logic exercise)
16. Free Online Games and Puzzles - Daily Jigsaw Puzzle
17. Free Online Games and Puzzles - Daily Word Search Puzzle
18. Games for the Brain - all kinds of games
19. The Game A Day site challenges educators to use puzzles and games across the curriculum to encourage critical thinking and support the development of problem solving skills.
20. Houghton Mifflin has grade level brain teasers. They don't change daily, but each grade has several teasers.
    Grade 1 - Grade 2 - Grade 3 - Grade 4 - Grade 5 - Grade 6
21. In The Grey Labyrinth , there is at least one unsolved puzzle at all times. See if you can deduce the answer for yourself before they post it. Ten recent puzzles are listed and there is a large archive of brain teasing puzzles .
22. KOL Brain Games - twenty five brain games from Kids On-Line [AOL]
23. Math quizzes - There are four separate math quizzes and each one features a new quiz for each day of the quiz. That's 28 to choose from. These will tease your brain!
24. Problem Solving Exercises (61) from PedagoNet
25. The Set Daily Puzzle - A real challenge for logical thinking.
26. Smart-Kit - Brain Teasers - "Puzzles to cross-train your brain"
27. Word Game quizzes - There are seven separate vocabulary quizzes and each one features a new quiz for each day of the quiz. That's 49 to choose from. These will tease your brain!