# Hours and days

## Learning focus

Learn about the number of minutes in an hour and the number of hours in a day.

This lesson includes:

• one learning summary
• two interactive activities

# Learn

In this lesson, you will learn how we measure time on a clock and estimate how long different events take.

First, look at the slideshow below to understand how we measure time using clocks. Try looking at a clock or watch in your home to help you to answer the questions. Time is a unit that can be measured. We use different instruments to measure time. We measure it in different units such as seconds, minutes, hours, days, weeks, months and years.1 of 5 We can use a clock to measure time. On a clock there is a minute hand, an hour hand and sometimes a second hand. So we can measure seconds, minutes and hours.2 of 5 This shows the second hand on a clock. How many seconds are in a minute? There are 60 seconds in a minute.3 of 5 This shows the minute hand on a clock. How many minutes are in an hour? There are 60 minutes in an hour.4 of 5 This shows the hour hand on a clock. How many hour intervals are there on the clock? There are 12. The hour hand goes round the clock twice in a day. So 12 hours + 12 hours = 24 hours or 1 day!5 of 5

### Just a minute

You can use words to help count a minute without using a stopwatch. You can say '1 elephant, 2 elephants, 3 elephants' and so on for each second until you get to 60 elephants for 1 minute.

Can you think of any other words that you could use to help you to count to a minute?

Now let's look at some more units of time on a clock in the next slideshow. How many minutes are there in a quarter of an hour? How many minutes are there in half an hour? How many minutes are there in three quarters of an hour?1 of 4 There are 15 minutes in a quarter of an hour. There are 30 minutes in half an hour. There are 45 minutes in three quarters of an hour.2 of 4 How many minute intervals are there on the clock? How many one hour intervals are there?3 of 4 There are 60 minute intervals and there are 12 one hour intervals. The hour hand goes round the clock twice. 12 hours + 12 hours = 24 hours = 1 day.4 of 4

# Practise

## Activity 1

Time to put your knowledge to the test! Here is a quiz all about minutes in an hour and hours in a day.

## Activity 2

Now try and solve some problems using what you have learned about hours and days.

# There's more to learn

Have a look at these other resources around the BBC and the web.