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  2. Tally marks - Wikipedia

    en.wikipedia.org/wiki/Tally_marks

    In the dot and line (or dot-dash) tally, dots represent counts from 1 to 4, lines 5 to 8, and diagonal lines 9 and 10. This method is commonly used in forestry and related fields. [ 6 ]

  3. Yan tan tethera - Wikipedia

    en.wikipedia.org/wiki/Yan_tan_tethera

    Yan Tan Tethera or yan-tan-tethera is a sheep-counting system traditionally used by shepherds in Northern England and some other parts of Britain. [1] The words are numbers taken from Brythonic Celtic languages such as Cumbric which had died out in most of Northern England by the sixth century, but they were commonly used for sheep counting and counting stitches in knitting until the ...

  4. Australian Aboriginal enumeration - Wikipedia

    en.wikipedia.org/wiki/Australian_Aboriginal...

    The Australian Aboriginal counting system was used together with message sticks sent to neighbouring clans to alert them of, or invite them to, corroborees, set-fights, and ball games. Numbers could clarify the day the meeting was to be held (in a number of "moons") and where (the number of camps' distance away).

  5. Counting - Wikipedia

    en.wikipedia.org/wiki/Counting

    Number blocks, which can be used for counting. Counting is the process of determining the number of elements of a finite set of objects; that is, determining the size of a set. . The traditional way of counting consists of continually increasing a (mental or spoken) counter by a unit for every element of the set, in some order, while marking (or displacing) those elements to avoid visiting the ...

  6. Dots and boxes - Wikipedia

    en.wikipedia.org/wiki/Dots_and_Boxes

    The game ends when no more lines can be placed. The winner is the player with the most points. [2] [7] The board may be of any size grid. When short on time, or to learn the game, a 2×2 board (3×3 dots) is suitable. [8] A 5×5 board, on the other hand, is good for experts. [9]

  7. Skip counting - Wikipedia

    en.wikipedia.org/wiki/Skip_counting

    Skip counting is a mathematics technique taught as a kind of multiplication in reform mathematics textbooks such as TERC. In older textbooks, this technique is called counting by twos (threes, fours, etc.). In skip counting by twos, a person can count to 10 by only naming every other even number: 2, 4, 6, 8, 10. [1]