Tree diagrams

  • Flippin' discs
    problem
    Favourite

    Flippin' Discs

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

    Discs are flipped in the air. You win if all the faces show the same colour. What is the probability of winning?

  • Odds and Evens
    problem
    Favourite

    Odds and Evens

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

    Are these games fair? How can you tell?

  • Interactive Spinners
    problem
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    Interactive Spinners

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

    This interactivity invites you to make conjectures and explore probabilities of outcomes related to two independent events.

  • At least one...
    problem
    Favourite

    At Least One...

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

    Imagine flipping a coin a number of times. Can you work out the probability you will get a head on at least one of the flips?

  • Non-Transitive Dice
    problem
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    Non-Transitive Dice

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

    Alison and Charlie are playing a game. Charlie wants to go first so Alison lets him. Was that such a good idea?

  • Chances are
    problem
    Favourite

    Chances Are

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

    Which of these games would you play to give yourself the best possible chance of winning a prize?

  • problem
    Favourite

    Who's the Winner?

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

    When two closely matched teams play each other, what is the most likely result?

  • In a box
    problem
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    In a Box

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

    Chris and Jo put two red and four blue ribbons in a box. They each pick a ribbon from the box without looking. Jo wins if the two ribbons are the same colour. Is the game fair?

  • Same Number!
    problem
    Favourite

    Same Number!

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

    If everyone in your class picked a number from 1 to 225, do you think any two people would pick the same number?

  • Which spinners?
    problem
    Favourite

    Which Spinners?

    Age
    14 to 18
    Challenge level
    filled star empty star empty star

    Can you work out which spinners were used to generate the frequency charts?