# Lesson video

In progress...

Hello, everybody.

It's another exciting day of maths.

What we're going to be doing, we're going to be applying knowledge of number bonds.

Now, let's have a look.

This is lesson one for the topic of addition and subtraction.

You will need a paper and a pencil.

There are times when you will have to pause the video and to have a go at some of the activities yourself.

Now, let's get started.

Here, we are going to be looking at a quick starting quiz to see what you remembered from before.

Some key vocabulary, which is our star words.

Identifying numbers within 20.

Using the part-whole model to complete number bonds within 20.

And finally, a quiz to see hat we have learnt.

Now, I want you to pause the video to complete your lesson quiz.

Once you've finished your lesson quiz, I want you to start the video.

Our Star words, star words, star words.

I'm going to say the word first, and then I want you to say it after.

Can you all show me the sign for add? Super.

Another way of saying add is plus.

Subtract.

Part.

Whole.

Super.

Now, let's get started with the lesson.

Here we've got a big picture.

There's lots of things happening in this picture.

What can you tell me about the picture? Who are the characters? And what are they doing? I want you to do pause the video and think about who the characters and what they are doing.

And then, you can share it with the person next to you.

Okay.

Are you ready to tell me? I'm listening.

Did you recognise the characters? It's Rumpelstiltskin, and he is making some gold coins and gold bars using his special gold thread.

Can you see the gold thread? And he has the princess there as well.

Ooh, look at all those gold coins and bars.

Let's count how many gold bars Rumpelstiltskin has made.

Can you estimate how many gold bars there are? That means, can you guess? Hmm.

I think there might be 30 gold bars.

How many do you think there might be? Can you shout it at the screen? Ooh, I think I heard a hundred.

I heard lots of different answers.

Now, let's count them and check.

10, 20, 30, 40, 41, 42, 43.

There are 43 gold coins, 43 gold bars.

And let's see, there's lots of coins.

Shall we see if we can help Rumpelstiltskin with this counting? Rumpelstiltskin has got 20 gold coins and he has put them into two money bags.

How many coins could be in each bag? Hmm.

Let's see how many it could be.

Can you have a guess? I know a way of how we can find it out.

We can use two hoops, right? The ones we use in our P.

E.

lessons at school.

We need to think about the hoops and how we would put the coins in them.

Hmm.

How can we fill these hoops with the 20 gold coins? I know I need to add 1 gold to the red hoop and 1 gold coin to the blue hoop and keep doing it until I put all the 20 gold coins in the hoops.

Then we can count how many are in that bags.

Can you help me? Super.

I know we need to add 1 gold coin to the red hoop and 1 to the blue hoop.

I'm going to keep putting the gold coin 1 in each hoop.

Hmm.

Let's see how many we have got.

1, 2, 3, 4, 5, 6, 7, 8, only eight gold coins.

We need to keep on going.

So that's 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16.

Let's count how many we have.

1, 2.

Oh, could you help point the gold coins with me? Get your fingers ready and point.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16.

We still need to carry on counting.

How many are left? Hmm.

We need to get to 20, but we've got 16.

16, hmm, 17, 18, 19, 20.

We've got 4 more gold coins to put in.

Hmm.

What is half of 4? Can anyone tell me? Half of 4 is 2.

So I need to put 2 in the red hoop, 1, 2, and 2 in the blue hoop, 1, 2.

Let's count together how many are in each hoop.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

Let's check the blue hoop as well.

1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

They're both the same.

In each hoop there are 10 gold coins.

Super.

That's both the same.

And all together, there's 20 gold coins.

Great counting.

Here, we have our part-whole model.

We are going to use it as the same as we did with our hoops.

So if 20 is the whole, what could the two parts be? Hmm.

Let's recap what we've just found out with our coins.

In our two hoops, we split them into two.

How many were in each hoop? Can you shout it out so I can hear? Well done.

There were 10 gold coins in each hoop.

Now, if we use the same amount of coins in our part-whole model, how many would be in each part? Can you shout it out for me? Well done.

There will be 10 in each part.

So 10 in the first part and 10 in the next part.

I know that makes 20 as the whole.

Now, let's see if you can help me complete our sentence.

Something, plus or add, something is equal to 20.

What should I write in the first box? I know 20 is the whole, so the something and the something must be the parts.

I know the first part was.

Oh, can you shout it out? 10, super.

So 10 plus.

What is other part? Hmm.

10.

10 plus 10 is equal to 20.

Let's say it nice and loud.

10 plus 10 is equal to 20.

Great job everybody.

Now, let's see who's ready for the next challenge.

In this bag, there are 17 coins.

Some of them are gold and some of them are silver.

How many could be silver? And how many could be gold? I want you to the pause video, and I want you to think how many gold and how many silver will equal to 17.

Then I want you to tell the person next to you.

How did you get along? Did you come up with some answers? I came up with one.

I thought there could be 10 gold coins and 7 silver coins, because I know that 10 plus 7 is equal to 17.

Tell me what your thoughts were.

Could you say it as a sentence? I heard some great examples.

Here are some of the examples that I could hear.

I heard 3 plus 14 is equal to 17.

Another one that I heard was 12 plus 5 is equal to 17.

Hmm.

I also heard somebody say 8 plus, but I didn't hear what they said.

8 plus, hmm, what could the answer be? 8 plus something is equal to 17.

What could the other part be? 8 and something? Hmm.

Get ready to shout to it out if you know the answer.

One, two, three.

9, super duper maths.

Well done.

8 plus 9 is equal to 17.

I love how you're doing great maths today.

Here, I've got another bag.

This is mysterious special bag with lots of gold and silver coins.

And this time, I have 12 in my bag, I've got 12 coins, some of them are gold and some of them are silver.

I need some help with you to tell me how many gold and how many silver coins I have.

You can use the numbers in the hoops.

You might use the same number and you can mix the numbers as well.

Off you go.

Ooh, are you ready for the challenge? What if there were 24 coins in total? What are the different possibilities to make 24? Have a good go.

In my gold, in my bag, I could have 6 gold and 6 silver coins, or I could have 9 gold coins and 3 silver coins to make 12, or I might have 1 gold coin and 11 silver coins, or I might have 7 gold coins of 5 silver coins in my bag.

So many different ways.

I love how we thought of lots of number bonds of 12.

Great learning everybody.

I hope you had lots of fun.

Now, I want you to complete your end of lesson quiz and I will see you tomorrow.

Bye.