Lesson video

Hi everyone.

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

The unit that we're studying is fractions.

In this lesson, we will be relating halves and quarters to division.

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

Great.

Let's have a look at today's lesson agenda.

So first we'll begin by dividing into equal parts and, in particular, halves.

Then we'll move onto a talk task.

After that we'll be dividing into equal parts and we'll be looking at quarters.

And finally, you will complete two independent tasks.

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 will need some cubes or counters.

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

And finally you'll need a ruler.

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

Dividing into equal parts, halves.

My turn, your turn: halves, halves.

Pause the video now and tell your screen, What do you think a half means? Great job.

We're going to find out in a second.

So, have a look at the part whole model on your screen.

Pause the video now, and tell me what you can see.

Great job.

So, we can see an equation which states two divided by two is equal to, and we have a part whole model which represents that equation.

Okay? So the whole is equal to two and we are dividing, or we are sharing, it into two equal parts.

Good job.

And I know that two divided by two is equal to one.

Good job.

Easy.

Now, Have a look at the part whole models on your screen.

I want you to tell me what's the same, and what's different.

Great work.

So on the left, as we discussed, we can see a part whole model.

And the whole is two, and we are dividing, or sharing, into two equal groups.

That's right.

And on the right hand side, again, we can see a part whole model.

The whole is two, and we are sharing into two equal groups, okay? And what's different is that instead of dividing by two, like we have here, which represents two equal groups, we have half of two.

Okay? So half of means dividing by two.

So, dividing by two and halving is the same thing.

My turn, your turn: Half.

Half.

Great.

What is two divided by two? Tell your screen.

What is half of two? Tell your screen.

Let's check.

So, we can see that two divided by two is equal to one.

So, if I've got two and I'm sharing it into two equal groups, I have one in each group.

And if half of two is also equal to one.

Okay.

So, now what I would like you to do is to pause the video and to tell me what's the same and what's different.

Great job.

So, we know that dividing by two and halving mean the same thing.

Okay? Great job.

So the part whole models are the same, but the equation is different.

Great job.

So, moving onto a talk task.

What I would like you to do is to pause the screen and to draw a part whole model, using a ruler.

Do that now.

Great job.

So, what you're going to do is you're going to choose a manipulative and you're going to find half of that and you're going to represent it on your part whole model.

Okay? Then you're going to describe the whole and the parts.

Okay? So you're going to get your cubes or counters and you're going to find half of six, and then you're going to find a half of eight.

And what I would like you to do is to describe the whole and to describe the parts as you're doing it.

Then we'll go through the answers together.

Great job.

So let's have a look at the answers.

So I know that half of six, if I have six altogether, and I share them into two equal groups, because half means sharing into two equal groups, My turn, your turn: half.

Sharing into two equal groups.

Sharing into two equal groups.

Great job.

And I know if I half six into two equal groups, I'm going to add a counter to each group one at a time, until I run out of my counters.

And I know that half of six is equal to three.

Great job.

And half of eight is equal to four.

Good job.

So, dividing into equal parts- quarters.

My turn, your turn.

Quarters.

Quarters.

What do you think a quarter means? We're going to find out.

Have a look at the part whole model on your screen and the equation.

Pause the video now and tell your screen what you can see.

Great job.

So we can see that it states four divided by four is equal to, okay? So that's our equation.

And we have a part whole model, which represents that equation.

So we have four, a whole is four, and we are dividing, or sharing, into four equal groups.

Good job.

So four divided by four is equal to one.

Good job.

Now having looked at the part whole models on your screen, what I would like you to do is to pause the video and to tell me what's the same and what's different.

Good job.

So we can see that the part whole models are exactly the same.

Whats different is the equations that we have.

So on the left, we have four divided by four.

So we're dividing a whole, which is four, into four equal groups.

Good job.

And on the right hand side, instead of saying divided by four, we have a quarter.

Okay? Just like in time, when we say "quarter to", we're dividing by four, because when we say "quarter to", we have divided our clock into four.

Good job.

So quarter to, dividing into four equal groups, your turn.

Good job.

And what's the same and what's different? Good work.

Four divided by four is equal to one, and a quarter of four is also equal to one.

Okay? Good job.

So, moving on to independent task.

What I would like you to do is to find the quarter by sharing your manipulatives into four equal parts.

I would like you to record your findings pictorially.

Now, before you do that, what I would like you to do is to draw your part whole models.

And then you're going to add a dot in each part.

Okay? And you're going to keep going, adding one dot to each part until you run out of your 16 counters.

Then you're going to draw it pictorially.

Then we'll go through the answers together, so pause the video now.

Great job.

So let's have a look at a quarter of 16.

So if I have 16 counters altogether, and I share them equally between four groups, it's going to be equal to four.

Good job.

So quarter of 16 is equal to four.

Your turn.

Good job.

So quarter means dividing into four equal groups.

Your turn.

Good job.

And a quarter of 12 is equal to three.

Excellent work, did you get that correct? Good job.

So quarter means dividing into four equal groups.

Good job.

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

And now it's time for you to complete your end-of-lesson quiz.

See you next time!.