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2. 25 Printable Brain Teasers You Can Print for Free - AOL

   www.aol.com/25-printable-brain-teasers-print...

   How many of these brain busters can you solve? The post 25 Printable Brain Teasers You Can Print for Free appeared first on Reader's Digest.

3. List of puzzle topics - Wikipedia

   en.wikipedia.org/wiki/List_of_puzzle_topics

   Brain teaser; Chess puzzle. Chess problem; Computer puzzle game; Cross Sums; Crossword puzzle; Cryptic crossword; Cryptogram; Maze. Back from the klondike; Ball-in-a-maze puzzle; Mechanical puzzle. Ball-in-a-maze puzzle; Burr puzzle; Word puzzle. Acrostic; Daughter in the box; Disentanglement puzzle; Edge-matching puzzle; Egg of Columbus; Eight ...

4. Brain teaser - Wikipedia

   en.wikipedia.org/wiki/Brain_teaser

   A brain teaser is a form of puzzle that requires thought to solve. It often requires thinking in unconventional ways with given constraints in mind; sometimes it also involves lateral thinking. Logic puzzles and riddles are specific types of brain teasers. One of the earliest known brain teaser enthusiasts was the Greek mathematician Archimedes ...

5. Mathematical Olympiads for Elementary and Middle Schools

   en.wikipedia.org/wiki/Mathematical_Olympiads_for...

   There are two divisions, Elementary and Middle School. Elementary level problems are for grades 4-6 and Middle School level problems are for grades 7-8, though 4-6 graders may participate in Middle School problems. Hundreds of thousands of students participate annually in MOEMS events. MOEMS plans soon to develop an online teacher training program.

6. Mental calculation - Wikipedia

   en.wikipedia.org/wiki/Mental_calculation

   If one has a two-digit number, take it and add the two numbers together and put that sum in the middle, and one can get the answer. For example: 24 x 11 = 264 because 2 + 4 = 6 and the 6 is placed in between the 2 and the 4. Second example: 87 x 11 = 957 because 8 + 7 = 15 so the 5 goes in between the 8 and the 7 and the 1 is carried to the 8.

7. Text mining - Wikipedia

   en.wikipedia.org/wiki/Text_mining

   In the United States, the School of Information at University of California, Berkeley is developing a program called BioText to assist biology researchers in text mining and analysis. The Text Analysis Portal for Research (TAPoR), currently housed at the University of Alberta , is a scholarly project to catalogue text analysis applications and ...