Lesson video

Hello there, my name is Mr. Tilstone.

I'm a teacher and one of my favourite things in the whole world is maths, so you can imagine I'm very excited to be with you today working with you on your maths lesson, which is all about time.

So if you are ready, let's begin.

The outcome of today's lesson is I can use the hour hand to show half past the hour.

So that's your target.

We've got some keywords which we're going to do in a my turn, your turn style.

So the first one is my turn, hour hand, your turn.

My turn, half past, your turn.

Now that's how I say half past, but depending on where you are in the country, you might pronounce it differently.

You might say half past.

So we're going to practise saying that a lot today, but you don't have to say it how I say it.

Our lesson today is split into two parts.

The first will be read the time to the half hour using the hour hand, and the second will be use the hour hand to show the half hour.

But if you are ready, let's start by reading the time to the half hour using the hour hand, let's go.

In today's lesson, you're going to meet Alex and Andeep.

They're going to be here to give us a helping hand.

Perhaps you've met them before.

Some analogue clocks have three hands.

Have a little look around you.

Have you got a clock in your classroom or your bedroom or living room that looks a little bit like this? Or some have got three hands and they all meet in the centre point of the clock, as you can see.

Not all clocks have it, but some have a long thin hand which shows seconds.

It moves quickly, sometimes it's red.

So have a look at your clock, has it got a second hand on? They don't always.

What they do have is a long hand which moves more slowly.

This shows the minutes, so it's a long hand.

Have a look at your clock.

Can you see the minute hand? And all of them also have a short hand which moves even more slowly, and this shows the hours.

So have a look at your clock.

Has it got an hour hand on it? It should have.

Today's lesson will focus on the hour hand, so that shorter hand.

The hour hand is moving all the time, but it moves so slowly that we can't see it moving.

Sometimes the hour hand is pointing exactly to one of the numerals 1 to 12, showing o'clock.

So if it's pointing exactly at the 1, it's one o'clock.

If it's pointing exactly at the 2, it's two o'clock.

And you might have had some recent experience practising that.

Other times it's in between the numerals, showing a different time that is not o'clock.

Alex is walking backwards and forwards along a number line.

It's a short number line, look, there's only three numerals on it, zero, one, and two.

He's standing directly on number one.

Can you see that, exactly on number one? And now he's standing directly on number two, so straight on the number two.

This time he's not standing on the one or the two.

He's standing somewhere in between one and two, but closer to one.

Would do you agree he's nearer to one than two? He's still standing somewhere between one and two, but this time he's closer to two.

So he's not standing on one, he's not standing on two, he's standing in between one and two, but closer to two.

Oh, have a look at this one.

Is he standing on one or two? No, he is not, is he? I think there's something quite special about where he's standing there.

Can you spot it? Maybe that's a clue for you.

He's standing exactly halfway between one and two, so he's at the halfway point between one and two.

He's right in the middle.

Now let's think about that in terms of clocks.

So when the hour hand is pointing directly to one of the numbers, we can use o'clock.

And we've got this stem sentence here, the hand is pointing directly to mm, so it is mm o'clock.

So let's give an example, see if you can do it as well.

The hand is pointing directly to one, so it is one o'clock.

Can you say that with me? The hand is pointing directly to one, so it is one o'clock.

What about this one? Can you use that stem sentence again? Let's have a look, that's a little clue there.

This time the hand is pointing directly to two, so it is two o'clock.

Will you say that with me? The hand is pointing directly to two, so it is two o'clock.

I think you are getting the hang of this.

Because the hour hand is always moving, sometimes it's not pointing straight to an o'clock time.

Sometimes it's in between them.

And we can show other times in between the o'clock times.

So it's not like the hour hand's on the one and then suddenly the two, it moves slowly in between them.

So for example, in between one o'clock and two o'clock, there are other times that are not o'clock.

And you could think of them as not o'clock times.

It's not one o'clock, it's not two o'clock, so it's not o'clock.

The hour hand on this clock is not pointing directly to one, so it's not one o'clock, we can't say that.

And it's also not pointing directly to two, so it's not two o'clock either, it's somewhere in between.

The hour hand has gone past one, but it's not reached two.

The hour hand on this clock is not pointing directly to one, so it's not one o'clock.

And it's not pointing directly to two, so it's not two o'clock.

The hour hand has gone past one, but it's not reached two yet.

What do you notice this time? There's something special I think about where the hour hand is.

Think about where Alex was standing.

The hour hand on this clock is not pointing directly to one, so it's not one o'clock.

And the hour hand is not pointing directly to two, so it's not two o'clock.

The hour hand has gone past one, but it's not reached two.

But the special thing about it is the hour hand is exactly halfway between one and two.

And there is a special way to say this using the words half past.

So the hour hand is halfway between mm and mm.

It is half past mm.

Can you say that with me? The hour hand is halfway between mm and mm.

It is half past mm.

Now just you.

Now let's practise using it.

So the hour hand is halfway between one and two, so it is half past one.

We could say half past one o'clock, but we don't tend to say it like that.

We tend to say it like this, half past one.

What do you notice this time? Let's use the stem sentence.

The hour hand is halfway between mm and mm.

It is half past mm.

What do you think? Should we have a go? The hour hand is halfway between seven and eight, it is half past seven.

Let's do a check for understanding, let's see how you're getting on.

So you're going to complete that stem sentence so the hour hand is halfway between mm and mm, it is half past mm with that example on that clock that you can see.

Okay, pause the video and I'll give you the answer in a second.

Did you manage to get it? Let us have a look.

The hour hand is halfway between four and five, so it is half past four.

And if you got that, you're on track, you're doing really, really well.

Let's have another check.

Alex has tried to complete the stem sentence.

Is he correct? He said the hour hand is halfway between 9 and 10.

It is half past 10.

Is that right or not? Pause the video.

I don't think that's quite right and we can use that stem sentence to help us.

It's gone past nine.

It hasn't gone past 10 yet, it's gone past nine, so in fact it's half past nine.

And that stem sentence would be the hour hand is halfway between 9 and 10, it is half past nine.

It is time for some independent practise.

Which of these clocks has an hour hand which shows half past? Take the ones that do.

So some of those are showing half past and some of those aren't, so have a go.

Number two, you're going to match the clock to the time.

So one of those says half past eight, which one? One says half past 12, which one? And one says half past seven, which one? And number three, what time do the clocks say? Now I've given you a little bit of a hint by giving you that stem sentence.

The hour hand is halfway between mm and mm, it is half past mm.

So for A, you've just got to fill in the blanks.

For B, we haven't got this stem sentence, you're just going to fill in the blank, half past mm.

And then for C, you need to write the words half past.

Pause the video and give that a go, good luck.

Welcome back, how did you get on with that? Let's have a look, let's give you some answers.

Which of these clocks has an hour hand which shows half past? Well, just that one.

If you have a look at the first one, that's pointing directly at the three, so that's showing three o'clock, not half past three.

And if you look at the third one, it's not exactly halfway between, it's not an o'clock time, but it's not half past either.

And to match the clock to the time, let's have a look.

So half past seven was the first one because it's halfway between seven and eight, it's half past seven.

Half past 12 was the next one, it's halfway between 12 and 1, so it's half past 12.

And then half past eight is the last one, it's halfway between eight and nine, so it's half past nine.

And then what time do the clock say? For the first one, the hour hand is halfway between eight and nine, so it's half past eight.

B is half past 12.

It's halfway between 12 and 1, it's half past 12.

And C, it's half past six.

It's halfway between six and seven, so it's half past six.

Very, very well done if you got those right.

Are you ready for the second part of our lesson? I think you are because you're doing really well.

Now we're going to use the hour hand to show the half hour.

Andeep's teacher is calling out some times.

He's using a paper clock and a paperclip and you might have something very similar in front of you right now.

The paperclip represents the hour hand.

So you could join in with your own version, hopefully you will.

So are you ready? Andeep's teacher calls out, "Half past six," and he's going to make half past six on his clock, so think about what he needs to do to show half past six.

Let's see, he's done that.

Is that right? Has he got that paperclip in the right position to represent the hour hand? Hmm, I don't think so, what do you think? Something looks a bit wrong about that.

So is he right? No, the hand, the hour hand needs to start from the centre of the clock, so it's not quite in the right position, it needs to start in the centre where you can see the dot.

So he's going to have another go, let's have a look.

So he's put it there.

Well, it's definitely in the centre now, isn't it? Is that showing half past six? What do you think? Is he right? I don't think he's quite right again, is he? Something's not right.

What is it, though? This is showing exactly six o'clock, but that's not what Andeep's teacher asked for, is it? Andeep's teacher asked for half past six.

So he's going to have another go.

And he's put it there this time.

What do you think, is he showing half past six? Is he right? Yes.

Yes, he is right.

He's had another go and this time he's got it.

We can use our stem sentence again.

The hour hand is halfway between mm and mm.

It is half past mm.

The hour hand is halfway between six and seven.

It is half past six.

Well done, Andeep.

So we're going to do another one, half past 11.

Let's have a look.

He's going to use that stem sentence and he's going to put the paperclip just here.

Is that showing half past 11, what do you think? Is he right? I'm not sure about that one.

No, the paperclip's pointing the wrong way.

Ah yes, I see, that's not half past 11 at all, is it? Half past five.

So he needs to flip it round and he's done that.

Is he showing half past 11 this time? Is he right? What do you think, yes or no? Yes.

Yes, he is.

The hour hand is halfway between 11 and 12.

It is half past 11.

Well done, Andeep.

He kept trying and he got there in the end.

Let's have a check.

Show the time on your clock and complete the stem sentence.

So that stem sentence once again, the hour hand is halfway between mm and mm.

It is half past mm.

And the time this time is half past 12.

Pause the video.

Where did you put your paperclip? Let's have a look.

Did you put it just there? Well done if you did.

So the hour hand is halfway between 12 and 1, it is half past 12.

If you got that right, you're on track, you're doing really, really well.

This time, Andeep is drawing in the hour hand when his teacher calls out the time.

He's going to use a ruler so it's nice and straight.

We can still use our stem sentence.

The hour hand is halfway between mm and mm.

It is half past mm.

Let's have a look, let's have a listen.

Half past nine.

Andeep's going to draw half past nine with a line, a small line, to represent the hour hand.

Let's see where he puts it and let's see if he's right or wrong.

He's put it just there.

What do you think? Is that showing half past nine? Is he right? Well, it is pointing exactly halfway between 9 and 10, so he's partly right, isn't he? But I don't know, something just doesn't look right there.

Does it to you? That's not what a clock looks like, is it? Can you spot what the problem is? The hand, the hour hand starts from the centre of the clock and Andeep's not drawing it that way so he needs to move it.

He's gonna have another go though, let's have a look.

This time he's done that, so is that showing half past nine, what do you think? Is Andeep right? I don't think he quite is, let's have a look.

No, he's showing half past eight, but the teacher's asking for half past nine.

So he's going to have another go.

Is he right this time, is that showing half past nine? What do you think, yes or no? Is he right? Yes, he is, well done.

The hour hand is halfway between 9 and 10, so it's half past nine.

He kept on trying and he got there in the end like a good mathematician.

Let's have a little check for understanding, let's see how you're getting on.

What mistakes has Andeep made? His teachers called out half past five and that's the line that he's drawn.

I think he's done a couple of things wrong.

Pause the video and see if you can give him some good advice.

So it doesn't quite look right, does it? What would you tell Andeep if you were here with him now? You might have said something like this.

The hour hand is too long.

That's more like a minute hand.

Hour hand's a bit short.

And it's not quite in the centre of the clock, so he needs to move that dot around so it's in the middle, right in the middle.

And it is not pointing directly to the five, it's almost pointing to the five but not quite.

And finally, maybe you said it's not exactly halfway between five and six.

It's actually a little bit closer to five, so it's not in the centre of those two numbers.

Let's do some practise.

If you have a partner with you, you're going to practise using your paperclip to show the time and you're going to use this stem sentence.

So here one of you might say, "Show me half past six." And the other one would place a paperclip down and use that stem sentence.

The hour hand is halfway between six and seven, it is half past six.

So do that with some different examples.

It could be, "Show me half past nine.

Show me half past three.

Show me half past 11," that kind of thing.

And for the next one, number two, you're going to draw the times on the clock.

So the first one draw half past nine on, so think about what the hand looks like and think about exactly where it needs to be pointing.

I've given you a little bit of help there because I've put the dot in the centre.

But for B and C, you need to do that yourself.

So for B, you're going to draw half past one.

And for C, half past 11.

Use a ruler to get a nice straight line if you can.

Pause the video and I'll give you some answers very shortly.

Welcome back, how did you get on with those? Well, for the first one you might have said something like this.

One of you maybe said, show me half past eight, for example, and the other one might have put the paperclip just there halfway between the eight and the nine, and used this stem sentence.

The hour hand is halfway between eight and nine, it is half past eight.

And draw the times on the clock, so that is where half past nine belongs, halfway between 9 and 10.

And for B, hopefully you drew a little dot in the centre of the clock, right in the middle, and you did a little hand pointed halfway between one and two, that's half past one.

And for C, same thing again, a dot in the middle, a short hand pointing halfway between 11 and 12, that is half past 11.

We've come to the end of the lesson.

Today's lesson has been telling the time to the half hour just using the hour hand.

The short hand on the clock is called the hour hand.

When it is pointing exactly halfway between two numbers, we can say it is half past, but it's got to be exactly halfway between the numbers.

So in this case, look, you can see that clock, the short hand is pointing halfway between seven and eight, right in the middle of those two numbers, so we can use a stem sentence the hour hand is halfway between seven and eight, it is half past seven.

I really enjoyed working with you today on your maths lesson and I do hope we get the chance to work together again in the future.

But until then, enjoy the rest of your day.

Take care and goodbye.