Lesson

Can you remember the words we can use to describe chance ?

What is the chance of winning the lottery?

A

Impossible

B

Unlikely

Worked Solution

Idea summary

Terms to describe chance:

Impossible: definitely will NOT happen.

Unlikely: more likely NOT to happen than to happen.

Even chance: one thing is not more likely to happen than the other

Likely: more likely to happen than not to happen.

Certain: definitely will happen.

Spinners are a popular way to explore chance, this video shows you what a spinner is and how to use it and work out what it means.

If you spin this spinner:

a

What is the most likely symbol to spin?

A

Pig

B

Ball

C

Apple

Worked Solution

b

What is the likelihood of spinning an apple?

A

Unlikely

B

Likely

Worked Solution

Idea summary

When spinning a spinner:

An outcome is only possible if it appears on the spinner.

An outcome is likely if more than half the parts of the spinner have that outcome.

An outcome is unlikely if less than half the parts of the spinner have that outcome.

This video shows us everything we need to know about dice.

A six-sided die is rolled.

What are the chances that the outcome is odd?

A

Unlikely

B

Even chance

C

Likely

Worked Solution

Idea summary

A six sided die has 1, 2, 3, 4, 5, and a 6 on it only. So those numbers are the only possible outcomes when rolling a die.

This video shows us how to find the likelihood of other types of events.

You draw one marble out of this jar without looking:

Which marble is more likely to be selected?

A

Black marble

B

Red marble

Worked Solution

Idea summary

When we want to work out the chance of something happening, we need to work out all the possible outcomes first. A good way to do that is to think about all the different things that could happen.