Exploring and noticing

  • Two's company
    problem
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    Two's Company

    Age
    11 to 14
    Challenge level
    2 out of 3

    Seven balls are shaken. You win if the two blue balls end up touching. What is the probability of winning?

  • Cosy corner
    problem
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    Cosy Corner

    Age
    11 to 14
    Challenge level
    2 out of 3

    Six balls are shaken. You win if at least one red ball ends in a corner. What is the probability of winning?

  • Mixing Paints
    problem
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    Mixing Paints

    Age
    11 to 14
    Challenge level
    2 out of 3

    Can you work out how to produce different shades of pink paint?

  • Speeding up, slowing down
    problem
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    Speeding Up, Slowing Down

    Age
    11 to 14
    Challenge level
    2 out of 3

    Experiment with the interactivity of "rolling" regular polygons, and explore how the different positions of the dot affects its speed at each stage.

  • Route to infinity
    problem
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    Route to Infinity

    Age
    11 to 14
    Challenge level
    2 out of 3

    Can you describe this route to infinity? Where will the arrows take you next?

  • Twisting and Turning
    problem
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    Twisting and Turning

    Age
    11 to 14
    Challenge level
    2 out of 3

    Take a look at the video and try to find a sequence of moves that will untangle the ropes.

  • Non-Transitive Dice
    problem
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    Non-Transitive Dice

    Age
    11 to 14
    Challenge level
    2 out of 3

    Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?

  • What's the weather like?
    problem
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    What's the Weather Like?

    Age
    11 to 14
    Challenge level
    2 out of 3

    With access to weather station data, what interesting questions can you investigate?

  • Unequal Averages
    problem
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    Unequal Averages

    Age
    11 to 14
    Challenge level
    2 out of 3

    Play around with sets of five numbers and see what you can discover about different types of average...

  • Fibonacci Surprises
    problem
    Favourite

    Fibonacci Surprises

    Age
    11 to 14
    Challenge level
    2 out of 3

    Play around with the Fibonacci sequence and discover some surprising results!