# Probability - Stage 3

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

### Sociable Cards

##### Age 11 to 14Challenge Level

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

### Flippin' Discs

##### Age 11 to 14Challenge Level

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

### What Does Random Look Like?

##### Age 11 to 14Challenge Level

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

### Odds and Evens

##### Age 11 to 14Challenge Level

Are these games fair? How can you tell?

### Cosy Corner

##### Age 11 to 14Challenge Level

Six balls are shaken. You win if at least one red ball ends in a corner. What is the probability of winning?

### Two's Company

##### Age 11 to 14Challenge Level

Seven balls are shaken. You win if the two blue balls end up touching. What is the probability of winning?

### At Least One...

##### Age 11 to 14Challenge 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?

### Statistical Shorts

##### Age 11 to 16Challenge Level

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

### Interactive Spinners

##### Age 11 to 14Challenge Level

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

### Do You Feel Lucky?

##### Age 11 to 14Challenge 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?

### Non-transitive Dice

##### Age 11 to 14Challenge Level

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

### Probability Short Problems - Age 11-14

##### Age 11 to 14

A collection of short problems on probability.

You may also be interested in this collection of activities from the STEM Learning website, that complement the NRICH activities above.