Explaining, convincing and proving

  • Number match
    problem
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    Number match

    Age
    5 to 7
    Challenge level
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    Can you work as a group to match these numbers?

  • problem
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    Pairs of numbers

    Age
    5 to 7
    Challenge level
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    If you have ten counters numbered 1 to 10, how many can you put into pairs that add to 10? Which ones do you have to leave out? Why?

  • The add and take-away path
    problem
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    The add and take-away path

    Age
    5 to 7
    Challenge level
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    Two children made up a game as they walked along the garden paths. Can you find out their scores? Can you find some paths of your own?

  • All Change
    problem
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    All change

    Age
    5 to 7
    Challenge level
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    There are three versions of this challenge. The idea is to change the colour of all the spots on the grid. Can you do it in fewer throws of the dice?

  • problem
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    The animals' sports day

    Age
    5 to 7
    Challenge level
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    One day, five small animals in my garden had a sports day. Who do you think won each race?

  • What's happening?
    problem
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    What's happening?

    Age
    5 to 7
    Challenge level
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    Shapes are added to other shapes. Can you see what is happening? What is the rule?

  • problem
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    Two numbers under the microscope

    Age
    5 to 7
    Challenge level
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    This investigates one particular property of number by looking closely at an example of adding two odd numbers together.

  • Walking round a triangle
    problem
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    Walking round a triangle

    Age
    5 to 7
    Challenge level
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    This ladybird is taking a walk round a triangle. Can you see how much she has turned when she gets back to where she started?

  • Two dice, each showing five.
    problem
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    Doubling fives

    Age
    5 to 7
    Challenge level
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    This activity focuses on doubling multiples of five.

  • Count the Crayons
    problem
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    Count the crayons

    Age
    5 to 7
    Challenge level
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    How could you estimate the number of pencils/pens in these pictures?