Working systematically

  • Games Related to Nim
    article

    Games related to Nim

    This article for teachers describes several games, found on the site, all of which have a related structure that can be used to develop the skills of strategic planning.

  • Learning Mathematics Through Games Series: 4. From Strategy Games
    article

    Learning mathematics through games series: 4. From strategy games

    Basic strategy games are particularly suitable as starting points for investigations. Players instinctively try to discover a winning strategy, and usually the best way to do this is to analyse the outcomes of series of 'moves'. With a little encouragement from the teacher, a mathematical investigation is born.

  • Latin Squares
    article

    Latin squares

    A Latin square of order n is an array of n symbols in which each symbol occurs exactly once in each row and exactly once in each column.
  • Impuzzable
    article

    Impuzzable

    This is about a fiendishly difficult jigsaw and how to solve it using a computer program.
  • Introducing NRICH TWILGO
    interactivity

    Introducing NRICH TWILGO

    Age
    5 to 18
    Challenge level
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    We're excited about this new program for drawing beautiful mathematical designs. Can you work out how we made our first few pictures and, even better, share your most elegant solutions with us?
  • The Remainders Game
    game
    Favourite

    The remainders game

    Age
    7 to 14
    Challenge level
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    Play this game and see if you can figure out the computer's chosen number.

  • Twinkle Twinkle
    game

    Twinkle twinkle

    Age
    7 to 14
    Challenge level
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    A game for 2 people. Take turns placing a counter on the star. You win when you have completed a line of 3 in your colour.
  • Central Sum
    problem

    Central sum

    Age
    11 to 14
    Challenge level
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    Can you find numbers between 100 and 999 that have a middle digit equal to the sum of the other two digits?
  • Birthday cake Candles
    problem

    Birthday cake candles

    Age
    7 to 11
    Challenge level
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    This challenge involves calculating the number of candles needed on birthday cakes. It is an opportunity to explore numbers and discover new things.