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

These are the 4 terms we have seen to describe chance:

- Impossible: definitely will NOT happen.
- Unlikely: more likely NOT to happen than to happen.
- 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 a possible outcome?

A

B

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.

Which of the following is not a possible outcome?

A

Rolling a multiple of ten

B

Rolling a three

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.

These four cards are shuffled. Dave draws one at random and records the shape.

a

How many different outcomes are there?

Worked Solution

b

What are the chances of drawing a star?

A

Likely

B

Unlikely

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.

describes and compares chance events in social and experimental contexts