Lesson video

Hello there math stars.

It's Mrs. Khaira and my fantastic helper, Elvis.

Now in this lesson we're going to be exploring counting in groups of two to find the total.

Sounds exciting, doesn't it? I know it does.

Let's begin the lesson now.

Now for this lesson you're going to need the following items. You will require a bead string and you'll also need the cards available in today's lesson resources.

These are the animals and the pairs of socks cards.

Now please ask parent or carer if you need some help cutting out these cards.

Especially if you're using scissors.

Now if you haven't got these things ready, please press the pause button now.

Go and collect what you need and then resume the video.

Right, let's begin the lesson.

We're going to start with a counting activity.

We are going to count from zero to 20.

After every other number we're going to clap.

The number as we say it.

So we're going to start by clapping on zero.

Are you ready? Zero, one, two, three, four, five, six, seven, eight, nine, ten, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

Great work, everyone! Now we're going to do the same exercise again.

This time, the number that we don't clap, we're going to whisper.

In our quietest voices.

And the number that we do clap, we're going to shout as loud as we can.

We're going to start by clapping on zero.

Are you ready to have a go? Let's go now.

Zero, one, two, three, four, five, six, seven, eight, nine, ten, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.

Great work, everyone! What you've been doing just then is practising counting in twos.

I wonder when you have some time later on, perhaps you can play some games to practise counting in twos.

Great counting, everyone.

Now let's have a look at our new learning for C.

In this lesson, we're going to start looking at the concept of a pair.

Do you know what a pair is? Ooh, Elvis has given me a really good definition.

He said that a pair refers to two objects.

Or a group of two.

So here's an example on the board.

I can see that their are a pair of shoes.

Because the left shoe and the right shoe together.

Make one pair.

I wonder if you can think of another example of a pair that you might have seen.

Maybe you can tell someone next to you.

Well Elvis has just spotted that I am wearing a pair of something.

He said that I am wearing a pair of earrings.

I have an earring in my left ear and a earring in my right ear.

And altogether, my two earrings make a pair.

I've just had a thought as well.

In the winter, when it gets cold.

I like to wear gloves.

I like to wear a glove on my left hand.

And I like to wear a glove on my right hand.

So that my fingers don't get cold.

Now my sets of two gloves make another pair.

Because you always need a group of two to make a pair.

Now, let's have a look at this example.

I can see a picture of a cat on the screen.

I want to know how many pairs of socks I need to give the cat.

So he can keep all of his paws warm.

Well, let's have a look carefully.

The cat has got two paws on his front legs.

And two paws on his back legs.

That must mean he needs a pair of socks for his front legs and a pair of socks for his back legs.

He needs two pairs of socks to keep his paws warm.

Right, well let's have a look at the Talk Task for today.

You are going to need the cards of the animals that you saw in the lesson resources.

You'll need a bead string.

And you'll also need a talk partner to help you.

So I've got Elvis on hand to give me some help.

Now, Elvis has picked one of the animal cards.

Let's see which one he's chosen.

Ah, he's picked the octopus.

Now, it's my job to have a go at counting the number of legs on the octopus.

To make sure I don't double count, I'm going to cross each one off as I go.

Let's see if we can count them out together.

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

The octopus has got eight legs.

Now to help me represent those eight legs, I am going to count out eight beads on my bead string.

Let me do this now.

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

There are the eight beads on my bead string.

They represent the octopus's eight legs.

Now, I want to work out how many pairs of shoes the octopus will need.

To do that, I has put my beads into groups of two.

Because each group of two will represent one pair of shoes.

So let's do that now.

I've got one group of two.

Two groups of two.

Three groups of two.

And four groups of two.

That must mean that the octopus will need one, two, three, four pairs of shoes.

Now it's your turn to have a go.

So with your talk partner, you're going to need to have a look at the animal cards.

And represent the number of legs using a bead string.

After you've done that, have a go at working out how many pairs of shoes your animal will need.

By grouping the beads into groups of two.

Once you've had a go at the activity, you can resume the video and we'll carry on with our learning.

Great work, everyone.

Now let's have a look at the example in a bit more detail.

Here is the octopus from the Talk Task.

Can you remember how many legs or how many tentacles he has on his body? Can you shout the answer out? That's right, he has eight legs altogether.

Now I'm going to draw circles to group his legs into pairs.

Let's see how many pairs of legs he's got.

He has got one pair of legs, which is the first two legs.

Two pairs of legs.

Three pairs of legs.

And four pairs of legs.

Now using our bead string, as we did before.

We can have a go at grouping the pairs of legs using our beads.

So let's do this now.

We have one pair of legs, which is represented by two beads.

Two pairs of legs, represented by another set of two beads.

Three pairs of legs, represented by two more beads.

And four pairs of legs, two more beads to represent them.

Altogether, let's count the beads out to see how many legs the octopus has overall.

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

He has eight legs overall.

But he's got one, two, three, and four groups of two legs.

Four pairs.

Now, we're going to find out how many pairs of socks the octopus needs to keep his legs nice and warm.

So each pair of beads is going to be represented by a pair of socks.

Let's put these pictures in now.

One pair of socks.

Two pairs of socks.

Three pairs of socks.

And four pairs of socks.

That must mean that the octopus needs four pairs of socks to keep his legs nice and warm.

Two, four, six, eight.

There are eight socks altogether.

And there are four groups of two pairs of socks.

Now it's your turn to have a go.

In a moment, you're going to pause the video and have a go at the activity.

You're going to need your animal cards, bead strings, and the picture cards of the pairs of socks.

I wonder if you can practise counting out in twos how many socks each animal will need altogether.

And then practise putting them into pairs.

Once you've had a go at the activity, please resume the video and we'll carry on with our learning for today.

Great work for today, everyone.

Let's have a look at a couple more examples before we finish up the lesson.

Here is a picture card of the cow.

Now how many legs does a cow have altogether? I can see that he has got one, two, three, and four legs.

Now let's put circles around the legs to group them into pairs.

Well the cow has got one pair of legs for his front legs.

And a second pair of legs for his hind legs.

Let's represent this by using our beads on our bead string.

There's our first two beads to represent the first pair of socks that he will require.

They are for his front legs.

Here is a second pair of beads to represent the cow's hind legs.

That's where we'll put his second pair of socks.

Two, four.

Altogether, we will need four socks that we will be grouping them into pairs of two.

Here are the pairs of socks that the cow will need.

One pair of socks for his front legs.

And two pairs of socks for his hind legs.

Great work, everyone.

If that's what you found out too.

Let's look at one more example.

Here is a picture of a worm.

Now how many legs does a worm have? Hmm.

Well I think that looking at the picture, the worm has only got one leg.

And there it is.

Now if I was going to represent that on a bead string.

I would only need to have one bead.

And there it is.

So, do you think I could put a pair of socks on a worm? Give me a thumbs up if you think yes.

Or a thumbs down if you think no.

Hmm.

Well, well done if you said, "No." We can't put a pair of socks on a worm.

Because to have a pair of socks on a worm, he would need to have two legs.

He only has one.

Great work, everyone.

Now in lesson four, we will be exploring grouping objects in tens to find the total.

Elvis and I look forward to seeing you then.

Bye for now.