Lesson video

Hi, everyone.

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

The unit we're studying is fractions.

In the previous lesson, we focus on identifying fractions in shape and quantity.

In this lesson, we'll focus on identifying equivalent fractions.

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

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

First we'll begin by comparing 1/2 and 2/4.

Then we'll move onto a talk task.

After that, we'll be looking at 1/2 and 2/4 of quantity.

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.

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

Comparing 1/2 and 2/4.

So, let's have a look at the equation on our screen.

Okay? So here we've got 3/4 of 16.

2/4 of 16.

And 1/2 of 16.

What I would like you to do is to pause the video now and to complete the equations.

If you'd like to, you can draw a part-whole model to help you.

Do that now.

Great job, so.

3/4 of 16 is equal to 12.

Because I know that 16 divided into 4 equal parts is equal to 4.

Okay? 'Cause we're looking at 3 parts.

Good job.

2/4 of 16 is equal to 8.

And 1/2 of 16 is also equal to 8.

So, what I would like you to do now, is to pause the video and to tell me what do you notice about the fractions? Do that now.

Great job, so we can see that 2/4 of 16 is equal to 8.

And also 1/2 of 16 is also equal to 8.

Okay? So, do we think that when we find 2/4 among finding 1/2 of a number, the answers will always be the same? Let's find out.

Let's have a look at the shape on your screen.

Okay? Here, the shape has been divided into quarters.

And we want to divide our shape into a half.

Do that now.

Great job.

So here I've got 1/2 and here I've got 1/4.

But what happens when I shade them at 2/4 of the shape.

So, there's 1/2 and there's 2/4.

Now, is 1/2 bigger, smaller, or the same size as 2/4.

Do they look the same? How could we check? Pause the video now and share your answer with the screen.

Great job, they are the same size.

But how can we check? Let's find out.

Let's have a look at a Talk Task.

What I would like you to do is to get a squared piece of paper, okay? And I would like for you to investigate how many 1/4 are equal to 1/2.

Okay? So what you could do is 1/2 your paper and then to 1/2 it again.

I want to work out what 1/2 my square is so I know that if I fold my piece of paper.

Like this.

This is going to show me 1/2.

Okay? So 1/2.

And if I fold it again one more time.

Okay? Now.

I have quarters.

Okay, so I've got 1/4, 1/4, 1/4, and 1/4.

And I can see that 2/4 is equal to 1/2.

So 2/4 and 1/2 are equivalent fractions.

Comparing 1/2 and 2/4 of quantity.

Let's have a look at a word problem.

Okay? Matt and Rosie had some sweets, okay? Matt ate 1/2 of them and Rosie ate 2/4 of them.

So, what we need to work out is what is the whole.

How many sweets did Matt eat? And how many sweets did Rosie eat, okay? I want to work out who ate the most.

So, here are the number of sweets in total.

This is the whole.

So we've got two, four, six, eight.

Okay? We've got eight sweets altogether.

And Matt ate 1/2 of them.

So we're going to use our part-whole model.

And Rosie ate 2/4.

So you're going to use this part-whole model.

Because 1/4, that means a whole is divided or shared into four equal parts.

Do that now and see who ate the most sweets.

Great job.

So, Matt ate 1/2 of the sweets so we know that Matt ate all sweets altogether.

Good job.

And Rosie ate 2/4, okay? So 2/4 and 1/4 of equal to two.

And 2/4 is equal to four.

So, who ate the most? Pause the video now and share your answer with the screen.

They both ate the same amount because 1/2 is equal to 2/4.

Great job! My turn, your turn.

1/2 is equal to 2/4.

Excellent job.

So, moving onto our independent task, what I would like you to do is to solve the word problem.

So comparing halves and quarters.

Let's read the questions together.

There are 16 sweets in one packet.

Would you rather have 1/2 of them or 2/4 of them? And why? Our next question is, "Connie swam six metres across the pool, which was exactly halfway.

What is the total length of the pool? And what is 2/4 of the length of the pool?" Pause the video now and complete your task.

So let's have a look at the answers together.

So there are 16 sweets in one packet.

Would you rather have 1/2 or 2/4 of them? Now, I know that 1/2 of 16 is equal to 8.

'Cause 16 divided by 2 is equal to 8.

And I also know that 2/4 of 16 is equal to 8.

So I would be happy with either 'cause we know that we would get the same amount 'cause 1/2 and 2/4 are the same.

Good job.

Connie swam 6 metres across the pool, which was exactly halfway.

What is the total length of the pool? Okay? So we know that 6 is halfway.

So we need to double 6.

So 2 multiplied by 6 is equal to 12.

That is good job.

What is 2/4 of the length of the pool? So we know that length of the pool is 12.

Okay? So we're trying to work out 2/4 of 12.

I know that 12 divided by 4 is equal to 3.

That's right.

And I know that 2 lots of 3 is equal to 6.

Great job if you got all of that correct.

And if you'd like to, please ask your parents or carer to share your work on Twitter tagging @OakNational and #LearnwithOak.

And it's now time for you to complete your final quiz of the unit.

I hope you've enjoyed this unit.

Bye!.