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  2. Rubik's Cube - Wikipedia

    en.wikipedia.org/wiki/Rubik's_Cube

    The Rubik's Cube is a 3D combination puzzle invented in 1974 [2][3] by Hungarian sculptor and professor of architecture Ernő Rubik. Originally called the Magic Cube, [4] the puzzle was licensed by Rubik to be sold by Pentangle Puzzles in the UK in 1978, [5] and then by Ideal Toy Corp in 1980 [6] via businessman Tibor Laczi and Seven Towns ...

  3. Four fours - Wikipedia

    en.wikipedia.org/wiki/Four_fours

    Four fours. Four fours is a mathematical puzzle, the goal of which is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four. No other digit is allowed. Most versions of the puzzle require that each expression have exactly four fours, but some ...

  4. Singapore math - Wikipedia

    en.wikipedia.org/wiki/Singapore_math

    Singapore math (or Singapore maths in British English [1]) is a teaching method based on the national mathematics curriculum used for first through sixth grade in Singaporean schools. [2][3] The term was coined in the United States [4] to describe an approach originally developed in Singapore to teach students to learn and master fewer ...

  5. The Scientific Method: What Is It? - WebMD

    www.webmd.com/a-to-z-guides/what-is-the...

    The scientific method is a systematic way of conducting experiments or studies so that you can explore the world around you and answer questions using reason and evidence. It's a step-by-step ...

  6. 10 Games and Puzzles to Exercise Your Brain - Healthline

    www.healthline.com/health/mental-health/games...

    7. Sudoku. Sudoku is a number puzzle where you have to fill a grid with numbers 1 through 9, with each number appearing only once in a row, column, or box. This classic game makes you think ...

  7. 8 Ways to Increase Your IQ Levels - Healthline

    www.healthline.com/health/how-to-increase-iq

    But if you do want to boost your IQ, research shows that consistently doing exercises in various areas measured by IQ tests may be able to raise your scores. The following activities may help you ...

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