معرفة الوقت - المجموعة 3

Read the information below carefully several times and try to remember the key points.

Click on a chapter to view the information.

Tip: read the information out loud (but in such a way that you do not disturb others).

What time is it?

It's seven o'clock!

Time to get up.

Have breakfast, shower, brush your teeth and go to school.

Every day there are events, like getting up, having breakfast, showering, brushing teeth and going to school.

Every day you have to do tasks, at a certain time.

Every day you meet people at a certain time.

Every week you will do some house cleaning.

Every month you will have a party somewhere

In order not to be too late, you need to learn the time.

People like it very much when you are on time.

Telling time is understanding the clock face and knowing what time it is.

A clock is a device used to tell time.

Moving hands on the face of a clock point to the current hour, minute, and second.

A clock can be big enough to be in a giant tower, like Big Ben in London

Big Ben is the most famous clock of the world.

Click on the picture to hear Big Ben.

A clock can also be small enough to fit on a person's wrist, like a wrist watch or simply, a watch.

Do you see what animal is shown on the watch?

A clock can be analog, with hands.

A clock can be digital, with numbers.

Today, a clock can be even on your phone:

A clock has a face. On that face you see the numbers of 12 hours positioned in a circle.

-> 1 hour is divided into 60 minutes.

-> 1 minute is divided into 60 seconds.

Note: The ancient Egyptians and Babylonians decided on this thousands of years ago.

Between the hour numbers you see tiny markings, being the minutes of the hour.

You see on the clock face 48 tiny markings for the seconds, between 12 large markings for the hours.

You see three hands on the clock face:

• The big hand, or hour hand, to tell the hour
• The small hand, or minute hand, to tell the minutes to the hour
• The second hand to tell the seconds to the minute

The clocks hands are constantly in motion.

When 1 second has passed, the second hand moves 1 position.

When 1 minute has passed, the minute hand moves 1 position.

When 1 hour has passed, the hour hand moves 1 position.

Here you see the second hand moving in the picture.

Did you know that it is estimated in the world there are 5 billion clocks.

Can you imagine that? 5 billion clocks!

All ticking 60 times per minute.

When you look at the clock, you see a time.

We have agreed upon certain phrases to tell the time you see.

For instance:

• If the big hand and small hand are on the 12, we say: it's 12 o'clock.

Now follow some examples of times.

We say: it's 1 o'clock.

We say: it's half past six.

Or we say: it's six thirty (6:30).

In this section we show three easy times.

Try to memorize them all.

Look at the picture. Say the time out loud and then press on the button.

In this section we show you 4 times with average difficulty.

Try to memorize them all.

Look at the picture. Say the time out loud and then press on the button.

In this section we show you 6 hard to tell times.

Try to memorize them all.

Look at the picture. Say the time out loud and then press on the button.

In 1656, the Dutch scientist Christiaan Huygens constructed the first timekeeping device using a pendulum.

This invention led to the development of more precise clocks and became the basis for modern pendulum clocks.

Below you see the principle of the pendulum in motion.

The sundial is the earliest type of timekeeping device of humankind.

It indicates the time of day by the position of the shadow of some object exposed to the sun's rays.

The oldest known sundial was made in Egypt in 1500 BCE from the time of Pharao Thutmose III.

The sundial was found in the Valley of Kings.

It is a shadow clock made from green schist, a type of metamorphic rock.

This bronze sundial has a unique shape and an inscription on the back side; “Count that day lost whose low descending sun views from thy hand no noble action done.”

Key points to remember are:

• 1 hour has 60 minutes
• 1 minute has 60 seconds
• A clock has a face
• A clock face has three hands: big hand, small hand, and the seconds hand
• Big Ben in London is the most famous clock in the world
• A time with a whole hour, is called: o' clock
• A time with an hour and 30 minutes, is called: It's half past...
• In 1656, Dutchman Christiaan Huygens invented the pendulum
• 1500 BCE, the sundial was invested by the ancient Egyptians

Once you have gone through the above information a few times, start doing the exercises that go with it.