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  2. Grid method multiplication - Wikipedia

    en.wikipedia.org/wiki/Grid_method_multiplication

    The grid method (also known as the box method) of multiplication is an introductory approach to multi-digit multiplication calculations that involve numbers larger than ten. Because it is often taught in mathematics education at the level of primary school or elementary school , this algorithm is sometimes called the grammar school method.

  3. Alphanumeric grid - Wikipedia

    en.wikipedia.org/wiki/Alphanumeric_grid

    An alphanumeric grid (also known as atlas grid [1]) is a simple coordinate system on a grid in which each cell is identified by a combination of a letter and a number. [2]An advantage over numeric coordinates such as easting and northing, which use two numbers instead of a number and a letter to refer to a grid cell, is that there can be no confusion over which coordinate refers to which ...

  4. Power Grid - Wikipedia

    en.wikipedia.org/wiki/Power_Grid

    Power Grid is the English-language version of the second edition of the multiplayer German-style board game Funkenschlag, designed by Friedemann Friese and first released in 2004. Power Grid was released by Rio Grande Games. In the game, each player represents a company which owns power plants and tries to supply electricity to cities.

  5. Double counting (proof technique) - Wikipedia

    en.wikipedia.org/wiki/Double_counting_(proof...

    This is a simple example of double counting, often used when teaching multiplication to young children. In this context, multiplication of natural numbers is introduced as repeated addition, and is then shown to be commutative by counting, in two different ways, a number of items arranged in a rectangular grid.

  6. Dot planimeter - Wikipedia

    en.wikipedia.org/wiki/Dot_planimeter

    When counting dots near the boundary of the shape as 1/2, there are 69 interior dots and 20 boundary dots for an estimated area of 79, close to the actual area of 25 π ≈ 78.54. A dot planimeter is a device used in planimetrics for estimating the area of a shape, consisting of a transparent sheet containing a square grid of dots. To estimate ...

  7. War and Peace (game) - Wikipedia

    en.wikipedia.org/wiki/War_and_Peace_(game)

    War and Peace was designed by Mark McLaughlin and published by Avalon Hill in 1980 in a boxed set with cover art by Denis Dighton.. After the demise of Avalon Hill, the rights to the game were acquired by One Small Step Games, which reprinted it in 2020, with a redrawn map and counters, and new scenarios of the Italian Campaign of 1796–7, the Egyptian Campaign of 1798 and the Marengo ...