Probability - Stage 3

This is part of our Secondary Curriculum collection of favourite rich tasks arranged by topic.

Scroll down to see the complete collection, or explore our subcollections on Perimeter and Area in two dimensions, and Surface Area and Volume in three dimensions.

problem

Favourite

What does random look like?

Age

11 to 14

Challenge level

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

problem

Favourite

At least one...

Age

11 to 14

Challenge level

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?

problem

Favourite

Statistical shorts

Age

11 to 16

Challenge level

Can you decide whether these short statistical statements are always, sometimes or never true?

problem

Favourite

Flippin' discs

Age

11 to 14

Challenge level

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

problem

Favourite

Odds and evens

Age

11 to 14

Challenge level

Are these games fair? How can you tell?

problem

Favourite

Interactive spinners

Age

11 to 14

Challenge level

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

problem

Favourite

Sociable cards

Age

11 to 14

Challenge level

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

problem

Favourite

Do you feel lucky?

Age

11 to 14

Challenge level

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?