Lesson video

Hello.

My name's Miss Robson.

We are going to be working with numbers to 30.

We're going to look at how to write numbers to 30.

And we are going to look at how to count up to 30 as well.

We're also going to think about how grouping things into tens might make counting faster for us when we are counting such big numbers.

For today's lesson, it might be helpful for you to have 30 things in front of you, so that you can use them to count along with me.

You will also need to be able to see the big picture later for your task.

Pause the video now to collect the things that you need.

When you're ready, press play.

Going to be thinking about numbers from 20 to 30.

Let's try counting from 20 to 30 counting in ones.

Are you ready? 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.

Fantastic.

Let's try one more time and let me hear your joining in really loudly.

Are you ready? 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30.

Fantastic.

On the screen, you can see some straws.

These straws have been grouped into 10.

When we're working with numbers that are quite big, like numbers to 30, it can help us to organise our counting by grouping things in tens.

I've done the same with my straws.

I have a bundle of 10 yellow straws, a bundle of 10 orange straws, and a bundle of 10 blue straws.

That way I know there's 10 in each.

I don't need to recount them each time, but I can count them in tens to quickly find out how many there are altogether.

10, 20, 30.

I'm going to be using my straws bundled in tens and some loose straws too, that I'm going to use for my ones, whilst I work out how to write each of these numbers.

These are my straws that I've bundled into groups of 10.

10, 20, 30.

I also have my loose ones that I'm going to use to help me make the different numbers, as I figure out how to write them.

I'm going to start by writing the number 20.

20 is two lots of tens and zero ones.

You write 20 like this.

The next number when I'm counting is 21.

I add one more straw.

Now this is two lots of 10 and one one.

Two lots of 10 and one one.

21.

Then I add one more straw.

That's two lots of 10 and two ones.

Two lots of 10 and two ones.

That's 22.

Two lots of 10 and three ones.

That's 23.

23.

10, 20, 21, 22, 23.

Adding one more, I'm making 24.

Two lots of 10 and four ones.

24.

10, 20, 21, 22, 23, 24.

Next, I'm going to add one more straw to make 25.

25.

Two lots of 10, one, two, three, four, five ones.

10, 20, 25.

Adding one more, I'm making 26.

Two lots of 10 and six ones.

26.

Then I'm going to add one more, to make 27.

One more, to make 28.

One more, to make 29.

And now I'm going to need to bundle these together.

When I add one more one, I've got 10 ones, and every time I make 10, I'm going to bundle them together like this to keep them safe and easy to count.

One, two, three, four, five, six, seven, eight, nine, 10.

10 straws.

And I'm going to put an elastic band around them to keep them together.

Now I have 10, 20, 30.

Three lots of 10.

30.

Three lots of 10 and zero loose straws.

I'm going to make a number using my bundles and my loose straws.

And I'd like you to have a go at figuring out what number you think it might be.

Have a look at the straws on the screen.

I'll help you to count the first two.

10, 20.

Can you point to the number that you think I've represented with my straws? It's the number 10, 20, 21, 22, 23, 24, 25.

25.

I've changed the representation.

Can you count and point to the number that you think I've represented with my straws? 10, 20 and one more is 21.

Give yourself a pat on the back if you'd pointed to the same number that I'm pointing to.

Can you count how many straws there are in my representation and point to the number of straws altogether? 10, 20, 21, 22, 23, 24, 25, 26, 27.

Altogether there are 27 straws.

Bundling into my tens means that I can count these big numbers much quicker.

Now that we've practised using the numbers from 20 to 30, both counting them and writing them, we're going to try counting some objects.

We're going to look at one of the big pictures and find things to count.

This big picture goes with the nursery rhyme, "Hey, diddle, diddle." I'm going to have a go at singing it now.

If you know it, try and join in.

♪ Hey, diddle, diddle ♪ ♪ The cat and the fiddle ♪ ♪ The cow jumped over the moon ♪ ♪ The little dog laughed ♪ ♪ To see such sport ♪ ♪ And the dish ran away with the spoon ♪ Hopefully you can see all of the parts of the song happening in the picture.

I can see a cat with a fiddle, which is the instrument he's holding.

A cow jumping over the moon.

I can see the dog having a big laugh on the grass, and I can see the dish running away with the spoon.

In this picture there's lots of things for us to count.

Let's zoom in a bit and have a go.

Here is the "Hey, diddle, diddle" picture a bit bigger so that we can see what we're doing more clearly.

The first thing that I'm going to count is I'm going to count the windows on the houses.

So you should be able to see my little red pointer here.

I'm going to count them.

I've got one, two, three, four, five, six, seven, eight, nine, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23.

Altogether there are 23 windows on the houses.

Next I'm going to count some flowers.

I'm going to start with the yellow flowers.

One, two, three, four, five, six, seven, eight, nine, 10.

Something that I noticed about these flowers is that every time they've planted them, they've planted them in patches of 10.

So we should be able to count them in tens.

My two favourite colours are yellow and purple, so I'm just going to count those bunches.

There's 10 here and 10 here.

So 10, 20.

It's like a double number, we've got 10 in one bunch and 10 in the next bunch.

10, 20.

There are 20 flowers in those two patches.

There are lots of other things that we could count in this picture.

We could count the stars in the sky.

You could count the little stars and the big stars separately, or you could count them all together.

We can count the trees on the hill.

Again, you could count all of them together.

The ones on this side and this side, or you could just count the little ones or the big ones.

You can count all of the flower bunches.

You can count how many houses there are.

You could count how many shapes there are on the path.

You could count how many characters there are.

How many eyes there are on the page.

You could count how many feet and hands and paws and hooves there are on the page.

There are loads of things to count in this picture.

Now that we've counted some things together, it's your turn to have a go at counting some of the other things you can see in the big picture.

Pause the video now to complete your task.

When you're finished, press play.

I hope you enjoyed your counting task.

There were so many things to count in that picture, and some of them were definitely bigger than 30.

We'll have to try counting them next time too.

How many trees did you count? I found 20 trees.

On one side of the picture there was a row of 10 trees.

And on the other side of the picture, there was another row of 10 trees.

10 and 10 is equal to 20.

If we're counting in tens, 10, 20.

There were 20 trees all together.

Did you get the same answer as me? If you'd like, you can go and find a talk partner, parent, or carer, and explain to them all of the different things that you managed to count in your big picture today.

You could even try singing them the "Hey, diddle, diddle." song.

You've done some fantastic learning today.

You're an amazing counter.

Why not share your work with us? If you'd like to, please ask your parent or carer to share your work on Twitter, by tagging @OakNational and using the #LearnwithOak.

We'd love to see what you've been up to.

Thank you so much for joining me today.

See you next time.