Lesson video

Hello there.

My name is Mr. Tilston.

I'm a teacher and one of my favourite things in the whole world is maths.

So, it's a real pleasure and honour to be with you today, teaching you a lesson all about time.

So, if you are ready, let's begin.

The outcome of today's lesson, the target that we'd like you to achieve by the end of it is this.

I can identify the number of minutes in an hour and hours in a day.

Our keywords today, my turn, minute.

Your turn.

My turn, hour.

Your turn.

And my turn, day.

Your turn.

And we're going to be using those words quite a lot.

So, by the end of the lesson, you are going to be an expert.

Our lesson is split into two cycles.

The first will be hours in a day and the second minutes in an hour.

But if you are ready, let's begin by exploring the number of hours in a day.

In this lesson, you're going to meet Laura.

You might have met Laura before.

She's here to give us a helping hand.

This is a clock.

Have a look around you.

Have you got a clock in your room, in your classroom or living room or wherever you are now? Can you see a clock? Does it look a little bit like this? There are all all kinds of different clocks and they all look different to each other.

Some analogue clocks, that's what this is.

An analogue clock have three hands.

They all meet in the centre point of the clock.

So, can you see those three sorts of sticks on the clock? Three of those, and they meet in the middle.

Some have a long thin hand, which shows the seconds and it moves around very quickly.

Now we're not going to be looking at that today.

All of them have a long hand, which moves more slowly than the second hand.

This shows the minutes and all of them have a shorter hand, which moves even more slowly than the second and the minute hand, this shows the hours.

And today's lesson will be all about hours and minutes.

So, here's a different clock.

Looks a bit different.

The hour hand is always moving around the clock, but like I say, very slowly, you can't really notice it.

But it's always moving.

But how many hours are there in one day? That's what we're going to investigate now.

So, here's Laura again.

Laura notices something about the clocks that she sees in the world around her, something she notices.

She's noticed this, the numerals, so those numbers written on them are usually one to 12.

Now, if you've got a clock in your room and it looks a bit like this, an analogue clock have a check, does it go one to 12? So, she decides to make a number line to 12, using a skipping rope and some digit cards.

And you might have access to a skipping rope yourself or a long piece of string, something like that.

And some digit cards.

And if you don't have those, you could write on some post-it notes, something like that or pieces of paper, anything like that.

And it goes like this.

So, she's made a little bit of a number line, as you can see, and it goes one to 12.

The numerals represent the number of hours.

So, that's one of our keywords today, the number of hours.

Laura walks across the number line saying O'clock, after each number.

Let's do it with her shall we? So, she goes one o'clock and then two o'clock, and then three o'clock, then four o'clock, five o'clock, six o'clock, join in, seven o'clock, eight o'clock, nine o'clock, 10 o'clock, 11 o'clock, 12 o'clock.

Laura knows that that hour hand goes round the clock twice in one day.

Did you know that too? The first time it goes from midnight to midday and Laura counts these hours this time.

So, she starts with one o'clock in the morning.

Now at that time, Laura's asleep and hopefully you are two at that time.

So, that's in the middle of the night as we see.

And then she says two o'clock in the morning, she's still asleep.

What do you think she's gonna say next? Three o'clock in the morning, still asleep.

What's next? Four o'clock in the morning, still asleep.

What's next? Five o'clock in the morning, still asleep.

Six o'clock in the morning, still asleep.

And then she says seven o'clock in the morning.

And that's about the time that Laura wakes up.

What time do you normally wake up? Is it seven o'clock in the morning or a different time? And then she says eight o'clock in the morning.

What do you think she'll say next? Nine o'clock in the morning and at that time, Laura's at school.

At her school, Oak Academy.

What time do you start school? What do you think she's going to say next? She said nine o'clock in the morning.

And then she's going to say 10 o'clock in the morning and then 11 o'clock in the morning.

She's still at school here, by the way.

And then what after that? 12 o'clock in the afternoon.

So, if you thought she was going say 12 o'clock in the morning, no, it's 12 o'clock in the afternoon.

That's what follows 11 o'clock in the morning.

The second time the clock goes around, it goes from midday to midnight.

So, here we are, one o'clock in the afternoon and at this point Laura's still at school.

What is she going to say next? Two o'clock in the afternoon, still at school.

What's she going to say next? Three o'clock in the afternoon.

Now at this time, that's when Laura goes home.

So, school's finished.

She goes home, what time does your school finish? What's she going to say next? Four o'clock in the afternoon, still at home, five o'clock in the afternoon, six o'clock in the evening.

So, we've changed the language slightly.

That's an evening time and then she says seven o'clock in the evening, what might she say next? Eight o'clock in the evening.

Now, this is the time that Laura goes to sleep.

Do you have a set bedtime for Laura? It's eight o'clock in the evening, but time still carries on even though you're asleep.

What's she gonna say next do you think? It might be nine o'clock in the evening? That would make sense.

But people would tend to say nine o'clock at night, that's a nighttime.

And then what you go and say next do you think? 10 o'clock at night, 11 o'clock at night.

And then what do you think next? Be careful.

What's she gonna say next? 12 o'clock in the morning.

So, 11 o'clock at night is followed by 12 o'clock in the morning.

So, we've got that number line one to 12.

There are 12 hours before midday and there are 12 hours after midday.

Now we're going to do a bit of adding up here.

If you were to add those 12 hours from the first number line to the 12 hours from the second number line, how many hours would that be altogether? Because that's going to be one complete day.

So, we're looking for 12 plus 12.

12 hours plus 12 hours equals 24 hours.

There are 24 hours in a day.

And that's one of the big facts that I need you to remember today when we finish this lesson, I want you to remember there are 24 hours in one day.

So, Laura makes her number lines into circles to look like a clock.

So, she's bent that number line round into a circle.

So, it's just the same.

It's got all of the numbers on as before, but this time in a circle, there are 12 hours before midday.

So, that's the first time it goes round.

And there are 12 hours after midday.

So, that's the second time it goes round.

There are 24 hours in a day.

That's our key fact.

There are 24 hours in a day.

We are going to shout it.

I'll do it first.

There are 24 hours in a day.

You do that.

Let's say it really slowly, I'll go first.

There are 24 hours in a day.

Can you do that? Off you go.

Now, I'm going to say really quickly.

Then you can it afterwards.

Ready? There are 24 hours in a day.

Can you do that really quickly? Go.

Wow, that was quick.

And this time I'm going to say it in a silly voice.

I'm gonna do I think like a monster voice.

Ready? There are 24 hours in a day.

Can you do that? Go.

That was a funny, silly voice.

This time I'm going to whisper it.

Ready? There are 24 hours in a day.

You do it.

Fantastic.

So, that's our key factor.

There are 24 hours in a day.

Did you remember it? Let's do a check for understanding how many hours are there in one day? Is it A, two? Is it B, 12 or is it C, 24? Pause the video.

Well, I hope and I'm sure that you all agree that there are 24 hours in one day and if you've got that fact, well done, you are on track in the lesson.

Time for some practise.

So, number one, use a skipping rope or a piece of string, something like that to create a number line.

So, straight number line to start with.

Label it one to 12 using digit cards or the numerals written on sticky notes, something like that.

And then walk along the number line just like Laura did, saying o'clock as you go.

After that, B, turn your number line into a circle and repeat it.

So, bend that piece of strangle or skipping rope into a circle.

Rearrange the numbers and do the same thing again.

And then after you've done that C, walk around it twice.

So, two times, say in the words o'clock and in the morning, in the afternoon, in the evening or at night as you go.

And then D, something for you to write down here.

There are um hours from midnight to midday.

There are um hours from midday to midnight and then um plus um equals um.

There are um hours in a day.

Pause the video, have fun and I'll see you soon.

Welcome back.

How did you get on with that? Did you have fun? So, the first thing you did was made a number line and you walked along it saying o'clock to it.

In this example here, look, Laura's on the number seven.

So, she's saying seven o'clock and then you turned it into a circle.

So, it would look a little something like this.

And in this example, Laura stood next to the number nine.

So, she's saying nine o'clock.

And then you were walking around it, saying the words o'clock in the morning, in the afternoon, in the evening or at night.

So, here Laura's stood next to the number 10 and at this point she's saying 10 o'clock at night.

And for C, there are 12 hours from midnight to midday.

There are 12 hours from midday to midnight.

12 plus 12 equals 24.

So, there are 24 hours in a day.

That's how we get that number 24.

You're doing really well so far.

Do you think you're ready for the next cycle, that's minutes in an hour.

I think you are.

Let's go.

So, the minute hand is always moving around the clock.

So, have a look at that clock.

So, look at that long hand.

It's always constantly moving.

But the question is, how many minutes are there in one hour? Well, let's investigate that now, shall we? So, Laura is creating a number line on a skipping rope and she's counting in fives.

Can you count with her? Five, 10.

What's next? 15.

What's next? 20, what's next? 25.

Let's keep going.

30, 35, 40, 45, 50, 55, 60.

You are really good at counting in fives.

That's great.

Do you notice anything though about the number line that Laura has created? Have a look at it.

Does it remind you of anything? Does it look a bit familiar? Ah, yes.

That's where we've seen that before.

Do you notice anything now about the number line? There are 12 numerals written on each number line.

So, the number line counting in fives has got 12 numbers on.

And the number line counting in ones has got 12 numbers on.

As you can see, the same amount.

These numerals represent the number of minutes.

So, Laura walks across the number line, saying minutes after each number.

So she goes, five minutes, let's do this together.

Ready? 10 minutes, 15 minutes, 20 minutes, 25 minutes, 30 minutes, 35 minutes, 40 minutes, 45 minutes, 50 minutes, 55 minutes, 60 minutes, 60 minutes is the same as one hour.

And that's our other main key learning factor for today.

60 minutes is the same as one hour.

So, Laura makes a number line into a circle, just like before to look like a clock.

Just like this.

So, the same numbers on, but this time in a circle.

Now, it's not something found on all clocks, but some clocks show both the hours and the minutes on the same scale.

So, this clock does, let's have a look at that.

So they're the hours, there's big numbers there.

The big numerals are hours and these are the minutes, those little ones inside.

But like I say, lots of clocks look different to each other.

Some show the number of hours but not the number of minutes.

So, look at this clock.

It's got those big numbers on the hours numbers, but not the number of minutes.

But it's got a minute's hand.

So, there's the hours but no minutes.

However, it is still possible to work out how many minutes have passed in each hour.

So, there are 12 numbers around the clock face and there are five minutes in between each one.

So, just have a look.

Can you see in between the number 12 and the number one, can you see those little colours? Like sort of square shaped.

Well, they're all minutes.

So, each of those is one minute and there's five minutes, between each of the hour numbers.

Just there look.

So, when we get to the number one, five minutes have passed, what do you think is going to happen when we get to the number two? How many minutes will have passed by that point? 10 minutes.

What about the number three? See if you can follow the pattern here.

15 minutes.

What about the number four? 20 minutes.

What's about five? How many minutes is that? 25 minutes.

What about six? We're counting in fives here, aren't we? Can you count in fives? What comes next after 25? 30 minutes and then we've got 35 minutes.

What about eight, what will that be? 40 minutes.

What will nine be? 45 minutes.

What will 10 be? 50 minutes.

What will 11 be? 55 minutes.

And by the time we get to 12, 60 minutes have passed, so 60 of those little tiny coloured squares.

12 lots of five is equal to 60.

So, there are 60 minutes in one hour.

So, here's our key factor gain.

There are 60 minutes in one hour.

I'm gonna shout it.

My turn first.

There are 60 minutes in one hour.

Your turn.

Wow, that was loud.

And let's say it really slowly.

Are you ready? I'll do it first, okay? There are six minutes in one hour.

You do it.

Go, really slow.

That was slow.

And let's have a go at saying it really quickly.

That's a bit hard.

Let me have a go.

So, there are 60 minutes in one hour.

Ah, you go.

That was quick.

And let's say it in a silly voice.

I think I'm gonna say mine in a bit of a squeaky voice, okay? There was 60 minutes in one hour.

You go.

That was a silly voice, I like it.

And this time we go to whisper it.

I'll go first.

There are 60 minutes in one hour, you go.

Brilliant.

Let's see if you remembered.

Let's do a check for understanding.

I think you'll know this.

How many minutes are there in one hour? Is it A, five? B, 12? C, 24 or D, 60? Pause the video.

What do you think? How many minutes are there in one hour? There are 60.

And if you knew that you are on track, see if you can remember that.

Time for some practise.

So, we've got a double number line just like before and you're going to fill in the blanks.

So, you might notice that the top part of the number line is counting in fives.

So, can you fill in the blanks? So five, 10, um, et cetera.

And then the bottom number line is counting in one.

So one, um, three, um, five, et cetera.

So, fill that in.

And number two, you're going to use a skipping rope again or a string, whatever you used last time to create a number line.

Label it in fives to 60, using digit cards or sticky notes, whatever you want to do.

Walk along the number line, say minutes as you go.

So, you'll say five minutes, 10 minutes, et cetera, et cetera.

And then when you've done that, turn it into a circle and do the same thing again, five minutes, 10 minutes, et cetera.

And then see there are um numbers on a clock.

Write this down.

There are um minutes between each number.

Um, lots of um is equal to um and there are um minutes in an hour.

Pause the video, enjoy that.

Good luck, see you soon.

Welcome back.

Are you ready for some feedback? So, your double number line will look like this.

Five, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60.

And the bottom one, one, two, three, four, five, six, seven, eight, nine, 10, 11, 12.

So, the top part of the line is the number of minutes and the bottom part of the line, the number of hours.

So, it's a double number line.

Very useful.

And then with your skipping report string, you created that number line and you'd be saying the number of minutes as you go.

So, in this example, Laura stood on the 55.

So, she's saying 55 minutes and hopefully you did that too.

And then you're gonna turn it into a circle.

That's what you did.

And repeat.

So Laura, look here, stood next to 40.

So, she's saying 40 minutes and hopefully you did that too.

And then for C, there are 12 numbers on a clock, there are five minutes between each number, 12 lots of five is equal to 60, there are 60 minutes in an hour.

We've come to the end of the lesson and I've had great fun today.

I hope you have too, learning all about time.

So, our lesson today has been knowing the number of minutes in an hour and the number of hours in a day.

And if you know the answer to that now, you've been successful.

And it is this, there are 24 hours in a day and there are 60 minutes in an hour.

So, we have a look at those pictures.

The first one is showing one day, so two lots of 12 hours.

And the second one is showing one hour.

That's 60 minutes, because we can count in fives, all the way around the clock to get to 60.

Well done on your achievements today.

Enjoy the rest of your day.

Take care and goodbye.