Exploring and noticing

  • The Koch Snowflake
    problem

    The Koch snowflake

    Age
    16 to 18
    Challenge level
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    Explore the strange geometrical properties of the Koch Snowflake.

  • Counting Stick Conjectures
    problem

    Counting stick conjectures

    Age
    5 to 11
    Challenge level
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    How many rectangles can you see? Are they all the same size? Can you predict how many rectangles there will be in counting sticks of different lengths?
  • Inequalities
    problem

    Inequalities

    Age
    16 to 18
    Challenge level
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    Which of the statements must be true?

  • problem

    Three neighbours

    Age
    7 to 14
    Challenge level
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    Take three consecutive numbers and add them together. What do you notice?

  • problem

    Take your dog for a walk

    Age
    7 to 11
    Challenge level
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    Use the interactivity to move Pat. Can you reproduce the graphs and tell their story?

  • Seesaw Shenanigans
    problem

    Seesaw shenanigans

    Age
    3 to 7
    Challenge level
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    A group of animals has made a seesaw in the woods. How can you make the seesaw balance?

  • Curve Hunter
    problem

    Curve hunter

    Age
    14 to 18
    Challenge level
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    This problem challenges you to sketch curves with different properties.

  • Subtraction Slip
    problem

    Subtraction slip

    Age
    5 to 7
    Challenge level
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    Can you spot the mistake in this video? How would you work out the answer to this calculation?

  • Compare the Calculations
    problem

    Compare the calculations

    Age
    7 to 11
    Challenge level
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    Can you put these four calculations into order of difficulty? How did you decide?