24 Hour Time

Objectives

To be familiar with and able to convert between digital and analog times within the 24 hour clock.

Resources

Abacus 4 Textbook 2 | Scanner or photocopier | 12- and 24- Hour Clock video | Analogue and Digital Clocks (MyMaths)

Today's Lesson

Main Activity

Turn to page 72 in Abacus 4 Textbook 2.

Scan or copy the page again, so that your student can write directly beneath the visual aids.

Ask your student to read and explain the process involved on this page. This exercise is the same as for the previous lesson. Ask your student to complete the page, working independently.

If your student is comfortable with this concept and works quickly through the exercise, they might like to have a go at this challenge…

Look at this digital clock:

Imagine that the clock stands on a mirror and makes a reflection:

That’s interesting… The reflection tells a real time, but it’s not the same, right time.

Now look at this digital clock…

…and imagine that this clock stands the mirror to make a reflection:

Wow! Not only does it tell a real time, but it’s the same, right time!

Can you explore how many times through the day the reflection tells the same, right time?
Now investigate what happens if you place the mirror to the right of the clock, like this:

Citations

[1] app.mymaths.co.uk