# Lesson video

In progress...

Oh, hello there everybody.

I was just getting ready to have my snack.

Would you like to see what I'm having? Here it is.

I've got a spoon, a container and five pieces of dried cereal.

I can't wait to get stuck in.

Oh, I wonder who that could be.

Oh, it's Reggie.

Say hello everyone.

Reggie says hello.

Oh, Reggie says he would like to have some snack too.

He would have to have exactly the same snack as what I'm having.

Let's take a look and see if we can make that happen.

So I have got a spoon, a container, and five pieces of dried cereal.

That means Reggie will need his own spoon, his own container, and another five pieces of dried cereal.

There's a way that I can describe that.

I know what it is.

I need double the amount of things on the table so that Reggie can have his own.

Doubling means two groups have the same amount of objects or adding the same number twice.

So let's see, I've got a spoon here.

So I'll need another spoon for Reggie.

I have a container there, so I'll need another container for Reggie.

And I have five pieces of dried cereal here.

So I'll need five pieces of dried cereal for Reggie.

Do you think you can help me count them in? One, two, three, four, and five.

There we are.

Now I've got double the amount that I had before.

Two groups of the same amount of objects.

There we are, some snack for me and some snack for Reggie.

Thanks for helping count, everyone.

And thank you, Reggie, and you can take a seat now.

Now we can move on to today's learning.

So for today, we're going to be exploring the concept of doubles.

Here's what you're going to need.

We will need a container with 10 objects inside.

Now this can be counting blocks, some small toys, maybe some pasta or some cereal or whatever you'd like to count with at home.

You will also need some number cards that are all the way up to 10.

Press pause now to go and get those things.

And I'll see you in a bit when you're ready.

Welcome back, everyone.

Now that you've got your objects for counting and your number cards, you're ready for today's learning.

Let's take a look at what our star words are for today.

I'm going to say them and you can repeat them after me.

Are you ready? Double, altogether, how many, and count.

Those are our star words for today.

Now let's take a look at our first activity.

So here we are.

I've got a tower here, it's a very short tower.

I would like to make a tower that is double the height of the tower that I've got here on the table.

Now, we know that doubling means having two groups of the same amount of objects or two of the same thing.

So let's have a look.

I have a short, very short tower here.

It's not the same as the first one.

So let's see, what do I need to do? Oh, I can hear some of you saying, add another cube, so that's what I'm going to do.

Here we are.

Now they're the same height.

I have two towers that are the same height, double the height of the tower that I had before if I put it on top here.

Now my tower is double the height.

So I made two groups of the same object, which is now double the amount and now double the height of the tower that I had before.

Thank you everybody.

Let's take a look at another tower.

Here we are.

I would like to make another tower that is double the height again.

Let's see.

We will need two of the same size towers to begin with.

Are they are the same? I can hear some of you shouting no.

So let's see what we can do, add another one here.

Are they the same height now? Not quite.

Okay.

Now let's take a look.

Are my towers the same height? Yes, they are.

Great.

And now I can put one on top of the other to make a tall tower that is double the height of what I had to begin with.

Thanks for that, everybody.

That was great helping.

Give yourselves two claps.

Now, I've got a question for you.

And let's see if you could answer it.

I have the tower here.

It's a blue tower.

I also have a red tower here and I have a yellow tower here.

My question is, I would like to know which of the towers on the table are double the height of the tower that I've got in my hand.

So here we are, take a good look and I'm going to put it here.

Which tower do you think is double the height of this blue tower here? Is it the other blue tower here? This red tower? Or this yellow tower? Shout your answer out to the screen if you know.

Oh, I can hear some of you shouting out the answer.

Let's take a look.

Is the blue tower double the height of my first blue tower? I'm going to use my finger to check.

I'm going to move my finger right up to the same height as my first blue tower.

And then I'm going to see what it would be if it was doubled.

So if this tower was double the height of my first blue tower, it would stop here.

So no, this is not double the height of my first blue tower.

Let's bring the red tower here.

Let's put my blue tower next to it.

Put my finger here where it stops.

Then I'm going to move my blue tower up and have a look.

Nope.

The red tower is slightly taller than my blue tower.

So it's not going to be double the height.

Now let's take a look.

Here we are.

Now these two, at this point where my finger is, they are the same height.

To make double we need double the height.

So let's have a look.

And yes, here we are.

The yellow tower is double the height of the blue tower.

And we can show that, let's take it apart.

So here we've made the same and double would be adding another two, which means they are the same.

The yellow tower is double the height of the blue tower.

Wow.

That was great work everyone.

Now, let's see if we can have a look at how we can do doubling with numbers.

Here's my number on the screen.

Shout it out if you know what it is.

Three.

I'm going to count out three cubes.

One, two, three.

Now to make double the amount of cubes, I need to have the same amount.

So I need to make the same amount if I want double, so here we are, there's another three.

And I'm going to count out another three cubes.

You can count them with me one.

One, two, three.

There we are.

Double three.

Let's count how many there are all together.

One, two, three, four, five, six.

Double three is equal to six.

Can you say that? Well done everybody.

I'm going to hold up a number card to the screen and I'd like you to count out that amount of objects in front of you.

Four, count out four objects and put them in front of you.

And I'll see you in a bit when you're ready.

Well done, everyone.

Have you counted out your four objects? Let's have a look.

I'm going to do it too.

One, two, three, four.

There we are.

Now let's see if we can double the amount of objects.

So now we need the same amount that we counted out before to make double four.

Can you count out another four objects and put them in front of you.

I'm going to have a go at doing that too.

Press pause and I'll see you when you're ready.

Welcome back everyone.

Did you count out another four objects? Just like me.

There we are.

Now, let's see if we can find out what double four is.

We'll count them.

You can count with me.

One, two, three, four, five, six, seven, eight.

Double four is equal to eight.

Can you shout that out for me? Well done everybody.

Great job.

Let's see, you can double this amount.

Count out two objects and then see how many there are when you add double the number.

Keep practising with all of your number cards, choose different numbers, count out your objects and find out how many there are if you double the amount.

Well done for today.

Last question for you before you go and keep practising.

I've got to die in front of me and there's a number of spots in my die.

Can you see? I've got another die here as well.

Do they show double? Do they show the same? Yes or no? Not quite.

Let's see.

Do they show the same now? Yes, they do.

Well done everybody.

There are five spots on each one, double five.

Excellent.

Well done for today.

Keep practising doubling your objects and I'll see you again next time.