Maths

Y9 Maths

Key Stage 3

Year 9

Probability

In this lesson, we will look at how we can represent probabilities as words and numbers.

Representing probability

In this lesson, we will look at how we can calculate probabilities for complementary events.

Complementary events

In this lesson, we will look at calculating probabilities and putting events in order of likelihood. We will then calculate probabilities using spinners and number cards.

Calculating probabilities

In this lesson, we will look at calculating theoretical probabilities and relative frequencies using spinners and dice as our examples.

Theoretical probability and relative frequency

In this lesson, we will look in more detail at calculating theoretical probabilities and relative frequencies using spinners and worded problems.

Theoretical probability and relative frequency (Part 2)

In this lesson, we will compare the probabilities of different events to see which is most likely.

Comparing probabilities

In this lesson, we will represent the probabilities of combined events in a sample space.

Combined events and sample spaces (Part 1)

In this lesson, we will look in more detail at how we can represent combined events and sample spaces.

Combined events and sample spaces (Part 2)

In this lesson, we will look at how we can represent combined events as frequency trees.

Frequency trees

In this lesson, we will look at how we can use area maps to calculate probabilities of combined events.

Calculating the probability of combined events

In this lesson, we will look at how we can represent combined events in a tree diagram.

Combined Events and Tree Diagrams (Part 1)

In this lesson, we will look at examples of when a tree diagram is more useful for combined events than a sample space diagram.

Key Stage 3, Maths, Probability