Lesson video

Hi everyone.

My name's 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 focused on identifying unit fractions of the quantity and shape.

In this lesson, we'll focus on identifying fractions of quantity and shape.

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

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

First we'll begin by exploring fractions of shape.

Then we'll move onto a Talk task.

After that, we'll do problem solving.

And finally, you'll complete your independent task.

And before we begin today 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 you need.

Exploring fractions of shape.

Lets have a look at the shapes on your screen.

What I would like you to do is to pause the video, and to write down the fractions of how much of each shape is shaded.

Pause the video now.

Great job.

So, lets have a look.

The first shape has been divide into four equal parts.

Okay.

So I know my denominator is going to be four.

And two parts are shaded so two quarters of the shape is shaded.

Good job.

My turn, your turn.

Two quarters.

Great work.

Lets have a look at the next shape.

I can see that one half of the shape is shaded.

My turn, your turn.

One half.

Good And the next shape I can see that one third of the shape has been shaded.

My turn, your turn.

One third.

Good job.

And the next shape I can see that three quarters of the shape has been shaded.

My turn, your turn.

Three quarters.

Excellent job.

And finally, I can see that both parts of my shape have been shaded.

Therefore, we say that one whole.

Okay.

My turn, your turn.

One whole.

Good job.

So, lets have a look at your Talk Task.

What I'd like you to do, is to match the fraction to the shape.

Okay? So, have a look at the shapes and I would like you to use the fractions here and to match them to the correct shape.

Do that now.

Great job.

Lets have a look at the first shape.

The first shape has been divided into four equal parts.

Okay.

And two parts are highlighted.

So two quarters of the shape is highlighted.

Next, again we can see two quarters of the shape highlighted.

There are four parts, and two parts are highlighted.

Good job.

Next, I can see three quarters of the shape highlighted.

And finally, I can see one quarter of the shape highlighted.

Great job.

Problem solving.

So, lets have a look at a word problem.

Follow with me.

Daddy Bear's key is six cm long.

Baby Bear's key is one third the length of Daddy Bear's key.

Okay.

Mummy Bear's key is two thirds the length of Daddy Bear's key.

How long are Baby Bear's and Mummy Bear's keys? So, what I'd like you to do is to pause the video and to tell me what is Do that now.

Great job.

So we know how long Daddy's Bear's key is.

Okay.

And we want to work out how long Baby Bear and Mummy Bear's keys are.

Okay.

So, Baby Bear is one third of Daddy Bear.

So we know, that we'll need to work out one third of six and then we need to work out two thirds of six.

Great job.

What I would like you to do is to draw a part-whole model that you are going to use.

So, if you working out one third and two thirds that means a part-whole model needs to have three parts.

So draw your part-whole models now.

Great job.

Now, find one thirds and two thirds of six.

Great.

So lets have a look at the answer.

So your part whole model should look something like this.

Because if we are finding one third, we know that we are dividing into three equal groups or parts.

So six, shared into three equal parts Is going to equal two.

Okay.

So I know that one third of six is equal to two centimetres.

So Baby Bear's key is two centimetres.

Because one part of three is equal to two.

Great work.

Now, Mummy Bear's key is two thirds Daddy Bear.

So two thirds of six.

Now I know one third is two.

Now, what is two thirds? That's right.

Four.

Okay.

So two, four.

So I know that Mummy Bear's key is four centimetres long.

Great work.

Now, moving onto our Independent Task.

What I would like you to do, is to solve the word problem using manipulatives on a part-whole model.

Okay.

If you like to use manipulatives, or you can just draw your arrays in your part-whole model.

Okay.

Like we have been doing so far.

Now, lets read the question together.

Daddy Bear's enormous scarf is 8 metres long.

Mummy Bear's scarf is three quarters the length of Daddy Bear's.

Baby Bear's scarf is two quarters the length of Daddy Bear's.

And you're trying to work out how long Mummy Bear's scarf is and how long Baby Bear's scarf is.

So pause the video now, and complete your work.

Remember to draw your part-whole model.

Okay.

If you're finding three quarters or two quarters, that means our part-whole model means whole part.

Well done.

Great job, lets have a look at the answer.

I know the value of each part is two.

So, I'm trying to find out three quarters of eight.

So I know that if one part is two then three multiplied by two is equal to six.

So Mummy Bear's scarf is 6 metres long cause I'm counting two, four six.

So we've got three groups of two.

And working out two quarters of eight I know that one quarter has a value of two So two quarters has a value of four.

Baby Bear's scarf is four metres long.

Well done.

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

Now it's time for you to complete your end of lesson quiz.

See you next time.