Being collaborative

  • Stop the Clock
    problem

    Stop the clock

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

    This is a game for two players. Can you find out how to be the first to get to 12 o'clock?

  • problem

    Reaction timer

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

    This problem offers you two ways to test reactions - use them to investigate your ideas about speeds of reaction.

  • All in a jumble
    problem

    All in a jumble

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

    My measurements have got all jumbled up! Swap them around and see if you can find a combination where every measurement is valid.

  • problem

    Oh! Harry!

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

    A group of children are using measuring cylinders but they lose the labels. Can you help relabel them?

  • What Do you Need?
    problem

    What do you need?

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

    Four of these clues are needed to find the chosen number on this grid and four are true but do nothing to help in finding the number. Can you sort out the clues and find the number?

  • Tug Harder!
    problem

    More Tug of war

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

    In this game, you can add, subtract, multiply or divide the numbers on the dice. Which will you do so that you get to the end of the number line first?

  • Tug of War
    problem

    Tug of war

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

    Can you use the numbers on the dice to reach your end of the number line before your partner beats you?

  • First Connect Three
    problem

    First connect three

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

    Add or subtract the two numbers on the spinners and try to complete a row of three. Are there some numbers that are good to aim for?