Other
Mycoted: Lateral Thinking Puzzles
A storehouse of puzzles designed to train the brain to think in atypical ways. Find riddles, visual puzzles, analogies, math problems, and more. Excellent source of raw material for practicing original and creative thinking one puzzle at...
Other
Games for the Brain
Features great games to wake up the brain. Test your knowledge of words, numbers, vocabulary, and more while having fun.
Braingle
Braingle: Cryptography Brain Teasers
Test your critical thinking skills with a variety of cryptography brain teasers, phrases or expressions "encoded in some way." Solve the teasers provided at this site, and submit your own for others to try!
Braingle
Braingle: Group Brain Teasers
The brain teasers at this site test "your ability to recognize groups of common attributes" and "to figure out why the words or letters are grouped as they are." Sort brain teasers according to title, popularity, and difficulty, and...
Braingle
Braingle: Language Brain Teasers
"Manipulate words and letters" with these "language brain teasers" that ask you to think about letters, anagrams, syllables, consonants, rhymes, and other topics that you talk about in English class. Try the brain teasers presented here,...
Braingle
Braingle: Optical Illusion Brain Teasers
Check out the variety of optical illusions provided at this site. Fool your eyes with "Chair or Block," "Angles or E," "Old or Young Woman," "Face or Vase," and others.
Braingle
Braingle: Probability Brain Teasers
Check out the variety of probability brain teasers at this site, which you can sort by popularity and difficulty.
Braingle
Braingle: Math Brain Teasers
Check out the variety of math brain teasers at this site, which you can sort by popularity and difficulty.
National Council of Teachers of Mathematics
The Math Forum: K 12 Math Puzzles
This site from the Math Forum of Drexel University provides a selection of math puzzles for grades K through 12 are found here. Types include: taking the numbers in the year 2004 and arriving at the numbers 1 through 100, using four 4s...