# Lesson video

In progress...

Hi everyone.

My name is Miss Sabzvari and I'm really excited you decided to join me today for our Maths lesson.

The unit we're studying is fractions.

In the previous lesson, we focused on relating halves and quarters to division.

In this lesson, we will be identifying the parts of a fraction.

So when you're ready, let's begin.

So let's have a look at today's lesson agenda.

First we'll begin by identifying denominators, then we'll move on to a talk task, after that we'll be identifying numerators and finally you will complete your independent task.

And before we begin today's lesson, you will need the following items. You will need something to write with and something to write on.

You'll need some keeps or counters.

Alternatively, you can ask your parent or carer to cut out some small pieces of paper that you can use.

And finally, you will need a ruler.

So please pause the video now and get the items that you need.

Identifying denominators.

Denominators.

Denominators.

Good job.

So in today's lesson, we're going to learn how to write fractions using numerals, okay, so using numbers.

So instead of writing halves and quarters, we are going to learn how to use numbers to write them down, okay? Have a look at the part-whole models on your screen.

What I would like you to do is to tell me what's the same and what's different.

Great job.

So we can see that in both part-whole models, we can see that the whole which is two, has been divided into two equal parts, okay? So we know that a half means dividing into two equal parts.

Good job.

Now, we can write half using numerals, okay? So a half of two, if we've got two and we're dividing it into two equal groups, okay? So how can we write half using numerals? So, we know that half means dividing, okay? So when we write fractions, the first thing that we write is the vinculum.

Vinculum.

Vinculum.

Good job.

So this is called the vinculum, and then we're going to write numbers underneath and above it.

So it's a little bit like the division symbol, okay? So, vinculum.

Great job.

Then at the bottom, we are going to write the number two because half means dividing into two equal parts.

And we call the number at the bottom of the fraction, the denominator.

Denominator.

Denominator.

Great job.

And we will come back to the number at the top, okay? So the number at the bottom is called the denominator and it tells us the number of equal parts altogether.

Great job.

Pause the video now and tell me what does a denominator mean? Great work.

Denominator tells us the number of equal parts altogether.

Your turn, say it out loud.

Great job.

So the denominator tells us the number of equal parts altogether.

So here, we can see that a half means dividing into two equal parts, therefore, our denominator is going to be two.

Now have a look at the part-whole models on your screen.

What's the same and what's different? Great job.

So we can see that on the left hand side, we have a part-whole model with the whole as four and we are sharing it into four equal parts.

Therefore, we have four and we're dividing it into four equal parts.

Good job.

And on the right hand side, again, we have the same representation.

And this time, instead of saying dividing into four, we say a quarter of four.

So if we find a quarter four is equal to one.

Good job.

And we can write quarter using numerals too, okay? So the first thing that we're going to do is of course, we are going to write or draw the vinculum.

Vinculum.

Good job.

Then what comes in next? Tell your screen.

That's right, we write the number of equal parts, but how many equal parts are there? Let's count together.

One, two, three, four.

So our denominator is going to be four.

Good job.

Denominator.

Denominator.

Tell your screen, what does a denominate mean? Great work.

The denominator tells us the number of equal parts altogether.

I will come back to the number at the top.

So moving on to our talk task.

What I would like you to do is to ask your parent or carer, if they could cut out these two shapes here for you, okay? So ask them to cut out a sheet of paper into four squares and a sheet of paper into two sections, okay? And then what I would like you to do is to draw the part-whole model for a half and for a quarter, okay? Then would like you to share the parts and your shapes equally on the part-whole model.

I would like you to identify the denominator, okay? Is it going to be a half or is it going to be a quarter? And as you're doing your activity, I'd like you to use the following sentence structure, okay? So I have cut my whole into quarters, of course you can ask your parent or carer to do for you.

The denominator is four because there are four equal parts altogether.

And for the half you would say the denominator is two because there are how many equal parts altogether? Good job.

Two, okay? And once you're ready, we will go through the answers together.

Great job.

So let's have a look at the answers.

The sheet of paper that you split into four groups or four parts, of course, is going to go this part-whole model because the denominator is going to be four.

And of course the denominator tells us how many equal parts there are altogether.

And the piece of paper that you split into two is going to go on this part-whole model which has two parts, because the denominator is two and we have split up or we have shared a whole into two equal parts.

Good job.

Identifying numerators.

Numerator.

Numerator.

Good job.

So let's have a look at our part-whole model.

Has the whole being shared into halves or quarters? Pause the video now and share your answer with the screen.

Great job.

That's right, the whole has been shared into halves.

So what I would like you to do now is to write down the fraction to represent this part-whole model.

Do that now.

Great job.

The first thing we're going to do is we're going to draw a vinculum.

Then, we're go into write our denominator and the denominator is going to tell us how many equal parts there are altogether, okay? And we know that there are two.

And finally we are going to write our numerator, okay? Now, how many of the equal parts are shaded? Tell your screen.

That's right, one, okay? So the numerator tells us how many equal parts are highlighted or shaded.

Good job.

Numerator.

Great work.

Let's have a look at this part-whole model.

Has the whole been shared into halves or quarters? Tell your screen now.

Good work.

And how many parts are highlighted now? Great work.

So write down the fraction to represent this part-whole model.

Great job.

So the first thing we're going to do is we're going to draw the vinculum, then we're going to write the denominator, which tells us how many equal parts there are altogether.

We've got two equal parts, and finally, we are going to write the numerator which is going to tell us how many parts are highlighted.

Good job.

Let's have a look at this part-whole model.

Has the whole been shared into halves or quarters? And how many parts are highlighted now? Pause the video and share your answer with the screen.

Great job.

Now, write down the fraction.

Great.

So the first thing I'm going to do is draw the vinculum.

Good job.

Then we are going to write the denominator, which is four because our four equal parts altogether.

And finally, we are going to write the numerator, which tells us how many parts are highlighted.

Great work.

Moving on to our independent task.

What I'd like you to do is to share the picture onto the part-whole model pictorially, okay? Then you're going to identify the fraction and fill in the missing words, okay? So, here I can see that my shape has two parts.

I'm going to draw a one half of the shape here, I'm going to draw one half of the shape here, okay? And then one of them, of course is shaded.

And I'm going to complete my fraction and the sentence that comes with it.

Once you are ready, we will go through the answers together, so pause the video now.

Great job.

So let's have a look at the first picture.

We can see that my picture, my whole has been shared into two equal parts, okay? So my denominator is two because there are two equal parts altogether and my numerator is one because this one equal part is highlighted.

Excellent work.

And moving on to a next picture or part-whole model, I can see that there are four parts all together so my denominator is four, and I can see that two parts are highlighted therefore, my numerator is two.

Great work.