Being collaborative

  • Connect Three
    problem

    Connect three

    Age
    11 to 16
    Challenge level
    filled star filled star empty star

    In this game the winner is the first to complete a row of three. Are some squares easier to land on than others?

  • Overlaps
    problem

    Overlaps

    Age
    7 to 11
    Challenge level
    filled star filled star empty star

    What does the overlap of these two shapes look like? Try picturing it in your head and then use some cut-out shapes to test your prediction.

  • Shape Times Shape
    problem

    Shape times shape

    Age
    7 to 11
    Challenge level
    filled star empty star empty star

    These eleven shapes each stand for a different number. Can you use the number sentences to work out what they are?

  • Secret Number
    problem

    Secret number

    Age
    5 to 7
    Challenge level
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    Annie and Ben are playing a game with a calculator. What was Annie's secret number?

  • Matching Triangles
    problem

    Matching triangles

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

    Can you sort these triangles into three different families and explain how you did it?

  • Nicely Similar
    problem

    Nicely similar

    Age
    14 to 16
    Challenge level
    filled star filled star empty star

    If the hypotenuse (base) length is 100cm and if an extra line splits the base into 36cm and 64cm parts, what were the side lengths for the original right-angled triangle?

  • A Chance to Win?
    problem

    A chance to win?

    Age
    11 to 14
    Challenge level
    filled star filled star filled star

    Imagine you were given the chance to win some money... and imagine you had nothing to lose...

  • Growing Garlic
    problem

    Growing garlic

    Age
    5 to 11
    Challenge level
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    Ben and his mum are planting garlic. Can you find out how many cloves of garlic they might have had?

  • problem

    Factor-multiple chains

    Age
    7 to 11
    Challenge level
    filled star filled star empty star

    Can you see how these factor-multiple chains work? Find the chain which contains the smallest possible numbers. How about the largest possible numbers?

  • 100 Square Jigsaw
    problem

    100 square jigsaw

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

    Can you complete this jigsaw of the 100 square?