Lesson video

Hello, I'm Miss Miah, and I'm so excited to be a part of your learning journey today.

I hope you enjoy this lesson as much as I do.

In this lesson, you are going to be representing counting in eight as the eight times tables.

Your key words are on the screen now and I'd like you to repeat them after me.

Factor, product, multiple.

Good job.

Let's move on.

Let's look at the definition for our keywords.

Numbers we can multiply together to get another number are known as factors.

In this example, we can see there's an equation there.

Two times three is equal to six.

So our factors here are two and three.

When multiplied together, this gives us six.

Now let's have a look at the second definition.

So the answer when two or more values are multiplied together results in a product.

So again, in this example we've got two times three equals six.

Six is the product.

Now a multiple.

And this is what we are going to be looking into for this lesson, is the result of multiplying a number by another whole number.

So in this lesson we will be focusing in on the multiples of eight.

Let's move on.

This lesson is all about the eight times tables and we have two lesson cycles here.

So the first lesson cycle is all about counting in eights.

That means we will be counting on in eights and also counting back in eights.

We're going to be using the number line to help us and there will be interactivity so I really want you to get involved.

For our second lesson cycle, we will be looking at multiples of eight.

Multiples of eight are in the eight times tables.

And all you'll need for this lesson today is a pencil and a piece of paper.

So if you've got that next to you, it would be good to have that to hand so you can jot some ideas down.

Let's get cracking.

In this lesson you'll meet Andeep and Izzy.

Andeep and Izzy are counting in eights.

Counting in eight means adding eight to the number before in the sequence.

Let's chart together.

And we're going to begin by starting at 0, and I'd like you to count along with me.

0, 8, 16, 24, 32.

Over to you.

Andeep is counting in eights.

What comes after 32? You can pause the video here.

So what did you get? You should have got 40 and that's because 40 comes after 32.

32 add eight is 40.

Now let's count back in eights.

Counting back in eight means that we are subtracting eight each time.

Let's chant together.

We're going to start at 32 and I'd like you to chant along with me.

So 32, 24, 16, 8, 0.

So now Andeep is counting backwards in eight.

What will he say after 64? You can pause the video here, have a think.

So what did you get? Well, you should have got 56.

56 comes before 64 because 64 subtract eight is 56.

By counting in eight you are saying the multiples of eight.

A multiple is the result of multiplying a number by a whole number.

For example, 16 is a multiple of eight because eight times two is 16.

17 is not a multiple of eight.

Let's move on.

Andeep is colouring in multiples of eight.

Do you think he will colour the number 18? I'll start with zero and count in multiples of eight.

So in other words, he's going to add eight each time.

I'd like you to justify your thinking to your partner.

So here, Andeep did not colour in 18 because 18 is not a multiple of eight.

Now Izzy continued counting in eight, and here you can see she's coloured in the multiples of eight.

What do you notice? You may have said that all the numbers are even.

You may have noticed that the numbers are also multiples of four or multiples of two.

Ultimately these numbers are all multiples of eight as well.

So if you look down the columns, the numbers are 40 apart.

They all end in 0, 2, 4, 6 or 8.

Over to you.

So you'll now identify which numbers are multiples of eight and which are not.

So the numbers that you can see on the screen and that you will be sorting are 56, 32, 40, 64, 16, 24, 26, 39 and 8.

So remember multiples of eight.

Think about our number line and start at zero.

And what you can do is count on in eights.

If you say the number, that means it's a multiple of eight.

You can pause the video here.

Off you go, good luck.

And when you're ready again, click play to rejoin us.

So how did you do? This is what you should have got.

Now I know eight is a multiple of eight because zero add eight is eight.

Then if I continue to count on, I should say these numbers.

So I'm now going to say the multiples of eight, get ready.

0, 8, eight is a multiple of eight, 16 and we've got that in that group.

24 is also a multiple of 8.

24 add another eight is 32.

32 add another eight is 40.

And then let's carry on counting one in eights, 40, 48, 56.

56 is a multiple of eight.

And then 56 add another eight is 64.

The numbers that are not multiples of eight.

Well we've got 26 and 39 there.

Now if I started counting on from 24, which is three eights, let's carry on counting on from there and see if I say 26.

So 24, 32, I did not say 26.

So 26 is not a multiple of eight.

And then we've got the number 39.

Well if I know that three times eight is 24, I can count on from there and see if I say the number 39.

So let's begin.

24, 32 40, 40 is a multiple of eight, but 39 is not because I did not say that number.

Well done if you managed to get all of those correct.

Good job.

Let's carry on.

Onto your main task for this lesson cycle.

Let's have a look at question one.

So for question one, you'll be counting on in multiples of eight.

So what that means is from zero, you will continuously add eight each time to identify the multiples of eight.

And then for question two you're going to do the opposite.

So you're going to be counting backwards in multiples of eight, starting from 96 and you'll be subtracting eight each time.

And by doing this you will identify the multiples of eight, but you would've done it backwards.

Let's have a look at question three.

So what comes next? So for these questions, you'll be adding eight each time.

So for example, let's have a look at the first question, 8.

So eight add eight is 16, which means 16 is a multiple of eight and that's what comes next.

For question four, you're going to be looking at what comes before.

So for each number you are going to identify what multiple of eight comes before.

And you're going to do this by subtracting eight.

For question five, you are going to be completing the following sequences.

Now this is a level up because not only are you going to be identifying what multiple comes after, you are also going to be identifying what multiple comes before and in between multiples.

So one tip, do remember that if you're looking for the multiple that comes after, you are adding eight.

And if you are looking for the multiple that comes before, you are subtracting eight.

Use the numbers that you see to help you do this.

You can pause the video here and once you're ready, click play to rejoin us.

So how did you do? For question one, this is what you should have got.

You can pause the video here to mark your work.

Let's move on.

For question three and question four.

So for question three, you should have got 16 as the next multiple.

32 comes after 24, 64 comes after 56 and 96 comes after 88.

For question four, you should have got zero as coming before 8, 24 comes before 32, 40 comes before 48 and 64 comes before 72.

And for question five, 32 comes after 24, 48 comes after 40 and before 56 and then 64 comes after 56.

And lastly for that column, 72 comes after 64 and then it's 80 and then it's 88.

And then if you have a look at the right hand column, you can pause the video there to mark the rest of the missing numbers, and then click play to rejoin us.

Okay, let's move on to the second learning cycle.

Multiples of eight.

So how many legs does an octopus have and a spider have? So an octopus has eight legs and a spider also has eight legs.

And how many legs are there? We are going to be counting in groups of eight.

Get ready.

So that means one octopus has eight legs, two octopuses have 16 legs, three octopuses have 24 legs and four octopuses have 32 legs altogether.

So let's go back and now just count in groups of eight.

Ready? 8, 16, 24, 32.

So there are 32 legs altogether.

That means there are eight four times.

So that also means there are 32 altogether.

So how many legs are there? You're going to be counting in groups of 8.

8, 16, 24 32, 40.

There are 40 legs altogether.

There are eight five times and there are 40 legs altogether.

So you you can also represent this as a multiplication equation.

So you can have eight five times.

So that's eight times five is 40.

Five creatures altogether with eight legs.

So that's five times eight which is 40.

Five is a factor, eight is a factor.

The product of eight fives is 40.

Over to you.

So how many legs are there? Count in groups of eight.

You can pause the video here and when you're ready to rejoin us, click play.

So how did you do? You should have got eight seven times, which means there are 56 legs altogether.

Over to you.

Using the keywords product, factor and your knowledge of the eight times tables and counting on I'd like you to fill in the gaps.

You can pause the video here, off you go.

And when you're ready, click play to rejoin us.

So how did you do? So you should have got eight is a factor, three is a factor, and 24 is your product.

Right, how many legs are there? We're going to be counting in groups of eight.

So eight, one group of eight is eight, that's eight once.

16, two groups of eight is 16, that's eight two times.

24, three groups of eight is 24, that's eight three times.

So how many legs are there? I'd like you to count in groups of eight.

Back to you.

You can pause the video here.

So how did you do? There are eight eight times.

That means there are 64 legs altogether.

Now I want you to think about what the six represents in this equation.

You can pause the video here.

So how did you do? Well, the six represents the number of animals that we have altogether.

What do you think the eight represented? Yes, the amount of legs.

Good job.

Onto the main task for this lesson cycle.

So for question one, you're going to be completing the questions.

So 1A is each spider has eight legs.

How many legs do three spiders have? 1B is how many legs do six spiders have? 1C, how many legs do eight spiders have? 1D, how many legs do 10 spiders have? And 1E, how many legs do 12 spiders have? And for this one, if you'd like to, you can also draw the spiders in to help you with that.

Question two.

Each creature has eight legs.

How many legs are in each set of animals below? And for question three Andeep has created a digital design for a mass competition using octagons.

Counting each octagon separately, how many sides are in each design? For example, in this design, Andeep used five octagons and each has eight sides.

So that means eight five times is 40.

So we have 40 sides.

The factors here are five and eight.

So using that information of knowing that each octagon has eight sides, you are now going to be identifying the factors for each design and then finding out what the total amount of sides are for each design.

You can pause the video here.

Off you go.

Good luck.

So how did you do.

For question 1A, you should have got 24 legs, and that's because eight three times or three eight times is 24.

For question 1B, you should have got 48 legs, and that's because six eight times is 48.

1C, you should have got 64 legs.

1D, you should have got 80 legs.

And for 1E, you should have got 96 legs altogether.

For 2A, you should have got 24 legs.

And that's because the factors are three and eight and we know that three times eight is 24.

For 2B, you should have got 48 legs.

And that's because the factors are six and eight.

There are six animals there with eight legs.

So six times eight is 48.

And for question 2C, you should have got 96.

And that's because there are 12 animals altogether with eight legs each.

So 12 times eight is 96.

Right, let's look at this question in more detail.

So for question 3A, there are eight octagons altogether.

One octagon has eight sides, and if there are eight octagons, that means we are multiplying eight by eight.

So eight times eight is 64.

Design one has 64 sides.

1B, there are nine octagons.

And if each octagon has eight sides, nine times eight is 72.

So design two has 72 sides.

And for 3C, there are seven octagons with eight sides.

So seven times eight is 56, design three has 56 sides.

If you manage to get all of those questions correct, really well done.

I'm very proud of you.

Good job.

Well done.

We've made it to the end of the lesson.

So we're now going to summarise our learning.

So today you are able to represent counting in eights as the eight times table.

You now should hopefully understand that counting in eights is the pattern of the eight times tables.

You should also understand that counting in eights can be represented in different ways.

I really hope that you enjoyed this lesson and that it strengthened your knowledge of counting in eights and learning about the eight times tables.

I hope to see you in the next lesson.