Conjecturing and generalising

  • problem
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    Right Angles

    Age
    11 to 14
    Challenge level
    2 out of 3

    Can you make a right-angled triangle on this peg-board by joining up three points round the edge?

  • 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?

  • ...on the wall
    problem
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    ...on the Wall

    Age
    11 to 14
    Challenge level
    2 out of 3

    Explore the effect of reflecting in two intersecting mirror lines.

  • 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?

  • Power mad!
    problem
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    Power Mad!

    Age
    11 to 14
    Challenge level
    2 out of 3

    Powers of numbers behave in surprising ways. Take a look at some of these and try to explain why they are true.

  • Christmas chocolates
    problem
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    Christmas Chocolates

    Age
    11 to 14
    Challenge level
    2 out of 3

    How could Penny, Tom and Matthew work out how many chocolates there are in different sized boxes?

  • The Tower of Hanoi - three wooden poles, with several coloured rings of decreasing sizes on the middle pole.
    problem
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    Tower of Hanoi

    Age
    11 to 14
    Challenge level
    2 out of 3

    The Tower of Hanoi is an ancient mathematical challenge. Working on the building blocks may help you to explain the patterns you notice.

  • Handshakes
    problem
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    Handshakes

    Age
    11 to 14
    Challenge level
    2 out of 3

    Can you find an efficient method to work out how many handshakes there would be if hundreds of people met?

  • Opposite vertices
    problem
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    Opposite Vertices

    Age
    11 to 14
    Challenge level
    2 out of 3

    Can you recreate squares and rhombuses if you are only given a side or a diagonal?