# 7.03 AM and PM

Lesson

## Are you ready?

When we use the words morning and afternoon, you are able to picture what part of the day it is. What other words help you to determine a specific part of the day? Make a list and compare it with your friends.

## Use of AM and PM

This video looks at how a 12 hr clock can be used to tell time across a day that has 24 hrs, by using AM and PM.

### Examples

#### Example 1

Choose whether these activities normally happen in the AM or PM.

a

Going to bed.

Worked Solution
Create a strategy

Think about if this happens before or after midday.

Apply the idea

We normally go to bed after midday.

After midday means PM, so the answer is PM.

b

Eating breakfast.

Worked Solution
Apply the idea

We normally eat breakfast before midday.

Before midday means AM, so the answer is AM.

c

Watching the sun rise.

Worked Solution
Apply the idea

The sun rises before midday.

Before midday means AM, so the answer is AM.

#### Example 2

James went to a movie at 11\text{:}50 am. The movie went for 1 hour and 10 minutes.

a

Would the movie finish in the AM or PM?

Worked Solution
Create a strategy

The movie starts 10 minutes before midday, then goes for an hour and 10 minutes after that.

Apply the idea

After 1 hour and 10 minutes the time will be after midday, so the movie finish in the PM.

b

Complete the statement:

The movie finishes at ⬚\text{:}⬚⬚ pm.

Worked Solution
Create a strategy

Add the 10 minutes first, and then add the 1 hour.

Apply the idea

The movie finishes at 1\text{:}00 pm.

Idea summary

AM means "before midday" and PM means "after midday."

### Outcomes

#### MA2-13MG

reads and records time in one-minute intervals and converts between hours, minutes and seconds