Being curious

  • Subtraction Surprise
    problem
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    Subtraction Surprise

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    Try out these calculations. Are you surprised by the results?

  • Climbing Conundrum
    problem

    Climbing Conundrum

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    Five children are taking part in a climbing competition with three parts, where their score for each part will be multiplied together. Can you see how the leaderboard will change depending on what happens in the final climb of the competition?

  • Dicey Operations
    game
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    Dicey Operations

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    In these addition and subtraction games, you'll need to think strategically to get closest to the target.

  • Consecutive Numbers
    problem
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    Consecutive Numbers

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    An investigation involving adding and subtracting sets of consecutive numbers. Lots to find out, lots to explore.

  • Your number is...
    problem
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    Your Number Is...

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    Think of a number and follow the machine's instructions... I know what your number is! Can you explain how I know?

  • A rolled up old-fashioned treasure map.
    problem
    Favourite

    Treasure Hunt

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    Can you find a reliable strategy for choosing coordinates that will locate the treasure in the minimum number of guesses?

  • missing multipliers
    problem
    Favourite

    Missing Multipliers

    Age
    7 to 14
    Challenge level
    filled star empty star empty star

    What is the smallest number of answers you need to reveal in order to work out the missing headers?