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  2. Missing square puzzle - Wikipedia

    en.wikipedia.org/wiki/Missing_square_puzzle

    The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry. It depicts two arrangements made of similar shapes in slightly different configurations.

  3. Dissection puzzle - Wikipedia

    en.wikipedia.org/wiki/Dissection_puzzle

    Ostomachion is a dissection puzzle attributed to Archimedes. Dissection puzzles are an early form of geometric puzzle. The earliest known descriptions of dissection puzzles are from the time of Plato (427–347 BCE) in Ancient Greece, and involve the challenge of turning two equal squares into one larger square using four pieces.

  4. Tangram - Wikipedia

    en.wikipedia.org/wiki/Tangram

    The origin of the English word 'tangram' is unclear. One conjecture holds that it is a compound of the Greek element '-gram' derived from γράμμα ('written character, letter, that which is drawn') with the 'tan-' element being variously conjectured to be Chinese t'an 'to extend' or Cantonese t'ang 'Chinese'. [5]

  5. Vanishing puzzle - Wikipedia

    en.wikipedia.org/wiki/Vanishing_puzzle

    The missing square puzzle is an optical illusion used in mathematics classes to help students reason about geometrical figures; or rather to teach them not to reason using figures, but to use only textual descriptions and the axioms of geometry. It depicts two arrangements made of similar shapes in slightly different configurations.

  6. Tiling puzzle - Wikipedia

    en.wikipedia.org/wiki/Tiling_puzzle

    Many tiling puzzles are now available as computer games. Tiling puzzles have a long history. Some of the oldest and most famous are jigsaw puzzles and the tangram puzzle. Other examples of tiling puzzles include: Conway puzzle; Domino tiling, of which the mutilated chessboard problem is one example; Eternity puzzle; Geometric magic square; Puzz-3D

  7. Soma cube - Wikipedia

    en.wikipedia.org/wiki/Soma_cube

    The Diabolical cube is a puzzle of six polycubes that can be assembled together to form a single 3×3×3 cube. Eye Level also makes use of the Thinking Cube (once students are in levels 30-32 of Basic Thinking Math or levels 29-32 of Critical Thinking Math), as one of its Teaching Tools, similar to the Soma cube.

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