Probability

  • A Brief History of Probability
    problem

    A brief history of probability

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

    Can you help d'Alembert discover the probabilty of at least one head in two coin flips?

  • Snail Trails
    game

    Snail trails

    Age
    11 to 14
    Challenge level
    filled star empty star empty star
    This is a game for two players. Does it matter where the target is put? Is there a good strategy for winning?
  • Flippin' discs
    problem

    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

    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

    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.

  • Sociable Cards
    problem

    Sociable cards

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

    Move your counters through this snake of cards and see how far you can go. Are you surprised by where you end up?

  • Do you feel lucky?
    problem

    Do you feel lucky?

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

    Some people offer advice on how to win at games of chance, or how to influence probability in your favour. Can you decide whether advice is good or not?

  • What does random look like?
    problem

    What does random look like?

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

    Engage in a little mathematical detective work to see if you can spot the fakes.

  • At least one...
    problem

    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?

  • Handling Data - Short Problems
    problem

    Strange dice

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

    If two of these unusually numbered dice are thrown, how many different sums are possible?