Lesson video

Hello, everybody, how are you doing today? Can you show me with an action? I'm feeling happy.

So, I'm doing a smiley face.

How are you feeling? Oh, I like to see lots of happy faces.

Now, I wonder what we're doing from us today.

Today, we are going to develop understanding of halves and quarters of quantities.

In this lesson, you will identify the parts and whole in the context of halves and quarters of quantities using objects and pictures.

This is lesson 10 for the topic of 'Multiplication and Division.

' You will need; paper and pencil and you might need some objects to help you.

There are times when you will need to pause the video and have a go at some of the activities yourself.

Now, let's get started.

Oh! Let me see is everyone's ready.

Today, We are going to look at the key vocabulary and that's going to be our star words: Exploring halves and quarters, understanding halves and quarters of quantities, an independent task and answers, and finally a quiz to see what we have learned.

Before we get started, let's do our star words.

Star words! Star words! My turn first, then your turn.

Fraction, equal parts, whole, divide, half, quarter.

Some of you might have heard these words before.

Here, I have six apples, but I want to find half of the amount.

Hmm.

What should I do, to half this quantity of apples? What does that mean? How can I find half? Can you tell me? Who have got some great ideas? Oh, I think lots of you've got it.

When we find half of a quantity, we divide it into two equal groups.

How many groups? Two equal groups.

Here, we've got Oliver and Joshua.

I've halved the apples.

You've got half and I've got half.

So, is Oliver given half? Lots of you are shaking your heads.

Ooh, dear.

Why has he not halved his apples? But both children have some apples.

Oh, you're all shaking your heads.

Hmm.

How does he have half then? Can you tell me? Hm huh.

That's right.

Both children must have the same amount for it to be half.

Now, let's get the apples again and let's try it again.

Has he got half now? One, two, three apples.

And one, two, three apples.

Both children have three apples.

Remember it has to have the same amount to be half.

And each child has three apples.

When we divide the whole into two equal parts, we find one half.

So one half is three.

So three is half of six.

Can you say after me, three is half of six.

Here we have different ways of showing that three is half of six.

We've got half of six is three.

That's a different way of saying it.

Can you point to the part or model? What's the whole? Mountain six.

And what are the two parts? Three and three.

And remember we want to find one part to find half.

So half is three.

Can you point to the beaching? And we've got six beads and half of six is three.

Can you put into the apples? We've got six juicy apples there.

And half of the six apples are three apples.

This time, Anaya, needs some help.

She's got some apples.

Half of my apples are in the bag.

How many apples do I have in total? Remember it has to have the same amount in each part for it to be half.

So we've got how many apples in the first part? Four.

And how many of you got in the other part? Super, four.

The parts are four and four.

How many do we have in total? So what is the whole? The whole is eight.

Well done.

Let's check.

So we've got four and let's count out four, five, six, seven, eight.

There are eight apples in total.

Thank you for helping.

Ooh, this time I want to find out if it's true or false.

So I want you to put your thumbs up for true.

Show me true.

Show me your thumbs.

Now put your thumbs down and say false.

So I want you to find out if it's true or false.

I have half of the chocolate.

I have five pieces.

I have the other half of the chocolate.

One half is five.

The whole is 10.

Half of 10 is five.

So half of 10 is five.

Is that true or false? Well, I can't see all of your thumbs.

Can you make sure I can see 'em? Let me have a look.

Ooh.

I can see all of your thumbs now.

Let's see if it's true or false.

Good job.

It is true.

Half of 10 is five.

This time we've got some oranges.

Half of the oranges are on the plate.

Can you put to the oranges on the plate? The other half are in the bag.

How many oranges are there altogether? So, what is the value of a half? And what is the value of the whole? Did I say how many oranges are there altogether? So we've got six in one part and then we'd have to have how many in the other part? six.

So altogether, there are 12 oranges, altogether.

Did you get 12 too? Let's check.

One, two, three, four, five, six, and let's check seven, eight, nine, 10, 11, 12.

The parts are six and six.

To the value of a half, is one half is six.

And the value of the whole, the whole is? What's the whole? Super.

The whole is 12.

Ooh! This time you've got some more apples.

I have half of the apples.

Sally, also has half of the apples.

Two is one half, and four is the whole.

So they've got two and two and two is one half, and four is the whole.

Let's look at the bottom one.

I have half of the apples.

Daniel, also, has half of the apples.

Hm.

There's missing number.

Something is one half.

We need to find out how many is in one half.

So the parts, I'm thinking about the two parts and we only want to find a one part.

What could it be? Can you shout it out? Five is one half.

Well done.

Because we've got five and a five.

And we only want to find one part, which is five.

What's the whole, can you add them together? So you've got five and five.

What is the whole? So we've got five and five.

What's the whole? The answer is? 10.

Give yourselves a round of applause.

This time.

Oh, it's getting a little bit challenging.

It's got the word quarter.

Has anybody heard of the word quarter before? Few of you might have heard it.

This time, I need to find a quarter of the apples.

What does that mean? And how many children will I share my apples with? So I need to find a quarter of the apples.

What does a quarter mean? Remember a half is when we have two equal groups.

So what could a quarter be? When we find one quarter of a quantity, we divide it into four equal groups.

How many equal groups? Oh, I didn't hear you.

I think you could say even louder.

Can you show me your four fingers as well, When we say four equal groups? Let's saying altogether.

Four equal groups.

And how many children will I share my apples with? Well done.

I need to share my apples with four children.

Now let's share the apples, in four parts.

So four children share the apples.

We've shared the apples into quarters.

There are four of us and we've all got 'em.

I'm super happy that you've helped me to share them.

Oh, have I not shared them correctly? Show me a thumbs up or thumbs down.

Oh, no.

Lots of you got two thumbs down.

So I haven't divided them, into quarters, into four equal parts.

Can you tell me why? I like that lots of you using star words.

Hmm.

So let me get this right.

So I have not divided the apples into quarters because quarters are four equal parts of one whole.

They need to be the same four parts.

So let's take the apples again and let's start it and share it equally.

Now, we've all got the same number, which means we each have a quarter.

Let's check, one, two, three, one, two, three, one, two, three, and one, two, three.

Each child has three apples.

When we divide the whole into how many parts? Four equal parts, we find a quarter.

There are 12 apples in total and one quarter of 12 is three.

So one quarter of 12 is three.

Here are some different ways of showing that three is one quarter of 12.

So there, we've got the beach string.

Can you put it to the beach string? Can you put it into one quarter? Now, let's point to the picture of the apples.

And can you put into one quarter? How many is in one quarter? How many apples? Three apples, well done.

And then here, we've got a container.

That container is a quarter full.

It can hold 12 units of water, but it only contains three units of water, now.

So one quarter of 12 is three.

This time, a nine it's a more help.

I have a quarter of the apples.

How many apples are in the other bags? How many apples are there altogether? Now, how many apples are in the other bags? So we've got two in the first bag, how many is in the second bag? Let's check.

Well done.

We've got two apples.

Let's check in our bag.

I've got one, two apples.

Now let's check.

How many is in the next bag? How many should there be? Two apples? Let's check if we've got two apples in our bag.

Ooh, one, two.

You've got two more apples.

And how many apples are in the last bag? Let's have a look.

This time we need to open this one.

Oh, it's a little bit hard to open.

Can you help me to open the bag or check how many apples are in the last bag? Oh, now I have opened.

Thank you for helping me.

Let's count.

We've got one, two.

So we've got two apples again.

So how many apples are there altogether? We can count in twos, because that will be quicker.

So we've got two, four, six, eight, there are eight apples altogether.

And a quarter of eight is? Two.

Well done.

A quarter of eight is two.

Can you point to one quarter? Good job.

I think you're ready for your independent task.

This time I have one quarter of the apples.

How many apples are there altogether? You can use different things to help you.

You might use some apples, but if you haven't got enough apples, you can use other objects to help you.

Here, I've used Lego.

So I had lots of Lego at home.

So I've got the lots of Lego here and I've got the four; are divided into four parts.

You might want to use the same.

You might want to do on paper or draw them or use different objects.

And you need to find a quarter and find the whole.

There's a challenge.

I have one quarter of the apples.

How many apples are there altogether? So you've got two things to find; the whole and the quarter.

How did you get on? The whole is eight apples and one quarter of eight is two.

The next question.

The whole is 12 apples.

One quarter of 12 is three.

Let's look at the challenge.

The whole is 16 apples.

One quarter of 16 is four.

And the last one, the whole is 20 apples.

One quarter of 20 is five.

Well, you've been doing some super maths today, it's already the end.

I hope you've had fun finding half and quarter quantities.

Now, I want you to complete your end of lesson quiz to see what you have remembered.

I hope you have a good day.

Bye.