Tree diagrams

problem

Dropouts

Age

14 to 16

Challenge level

What percentage of students who graduate have never been to France?
problem

Do you brush your teeth every day?

Age

14 to 18

Challenge level

How can we find out answers to questions like this if people often lie?
project
Investigating epidemics

Simple models which help us to investigate how epidemics grow and die out.
problem
Favourite

Which spinners?

Age

14 to 18

Challenge level

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

Peas in a pod

Age

14 to 16

Challenge level

What is the chance this pea plant will look like its parents?
problem
Favourite

Who's the winner?

Age

14 to 16

Challenge level

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

Genetics

Age

14 to 16

Challenge level

A problem about genetics and the transmission of disease.
problem
Favourite

Non-transitive dice

Age

11 to 14

Challenge level

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

Ante up

Age

16 to 18

Challenge level

Use cunning to work out a strategy to win this game.
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?