Lesson video

Hi everyone.

My name is Miss Sebzvari and I'm really excited that you decided to join me today for our math lesson.

The unit we're studying is multiplication and division.

In the previous lesson, we focused on relating multiplying by two to doubling.

In this lesson, we'll focus on calculating multiplication of five by skip counting.

So when you're ready, let's begin.

Let's have a look at today's lesson agenda.

First, we'll begin by relating skip counting fives to the multiplication table of five.

Then we'll move on to a Talk Task.

Next you'll be solving some multiplication problems, and finally, you will complete your Independent Task.

Before we begin today's lesson, you will need the following items. You will need something to write with and something to write on and you will need a ruler.

So please pause the video now to get the items that you need.

Relating, skip counting in fives to the multiplication table of five.

Before we begin, what I would like you to do is to pause the video here and to draw a number line from zero all the way to 50, because you're going to use this to skip count in fives.

So please pause the video and do that now.

Good work.

So we would just skip count in fives together, and my turn, your turn.

One group of five is equal to five.

Two groups of five is equal to 10.

Three groups of five is equal to 15.

Four groups of five is equal to 20.

Five groups of five is equal to 25.

Six groups of five is equal to 30.

Seven groups of five is equal to 35.

Eight groups of five is equal to 40.

Nine groups of five is equal to 45.

10 groups of five is equal to 50.

Great work.

So as we were skip counting, what do you notice about the numbers in the multiplication table of five? And what happens to the numbers as you keep skip counting? Pause the video now and tap your screen.

Great, so you might have noticed that the numbers in the multiplication table of five all end in zero or five.

Okay? And you might have also noticed that each time you skip count, another group of five is added.

So moving on to Talk Task, what I would like you to do is to read the equations.

Then I would like you to skip count in fives on a number line.

And I would like you to find the picture that matches the equation.

Okay? So do that now.

So let's go through the answers together.

Having a look at the first picture, we can see that there are one, two, three, four, five, six groups of five, which is equal to 30.

And here we've got one, two, three, four, five, six, seven, eight, nine groups of five is equal to 45.

Let's check, let's go count together.

Five, 10, 15, 20, 25, 30, 35, 40, 45.

Good job.

One group of five is equal to five.

Here we've got one, two, three, four, five, six, seven, eight groups of five.

Let's skip count together, five, 10, 15, 20, 25, 30, 35 40.

Great, so eight groups of five, is equal to 40.

Four groups of five is equal to 20.

Two groups of five is equal to 10.

Three groups of five is equal to 15 and seven groups of five is equal to 35.

Well done, if you got all of that, correct.

Solving multiplication problems. Before we solve our multiplication problems, let's skip count by five all the way to 50.

Okay? After three, one, two, three, five, 10, 15, 20, 25, 30, 35, 40, 45, 50.

Good job.

Let's have a look at a problem.

Follow with me.

What multiplication equation does this represent? So what I would like you to do is to pause the video now and to write down the multiplication equation for this picture.

Great work.

We can see that there are one, two, three, four groups of five, and that equals to 20.

Let's skip count, five, 10, 15, 20.

Great work.

What multiplication equation does this represent? Again, pause your video and write down your equation.

Great work.

So I have one, two, three, four, five groups of five.

So five groups of five is equal to 25.

Let's check.

Five, 10, 15, 20, 25.

Good work.

What multiplication equation does this represent? Pause your video now and write down your equation.

Let's check the answer together.

So we have one, two, three, four, five, six groups of five.

So six multiplied by five is equal to 30.

Let's skip count together.

Five, 10, 15, 20, 25, 30.

Good work.

Now moving on to Independent Task.

We are selling cookies at the school fair.

Each cookie costs 5p.

Create the price list for the cookies sold at the school fair.

Okay? So what you're going to do, the first one's been done for us.

You're going to draw a picture of your cookies though, starting from one, all the way down to 12.

And each cookie has the value of 5p.

So you're going to draw your 5p coins.

And then you're going to write your multiplication equation.

And once you're ready, we'll go through the answers together.

Great work.

So let's have a look at the answers.

I know that one group of five is equal to five.

Two groups of five is equal to 10.

Three groups of five is equal to 15.

Four groups of five is equal to 20.

Five groups of five is equal to 25.

And six groups of five is equal to 30.

And well done, if you've got your p down for pence.

Seven groups of five is equal to 35, Eight groups of five is equal to 40.

Nine groups of five is equal to 45.

10 groups of five is equal to 50, 11 groups of five is equal to 55.

And 12 groups of five is equal to 60.

Great work.

And if you'd like, please ask your parents or carer it to share your work on Twitter tagging @OakNational and #LearnwithOak.

And now it's time for you to complete your end of lesson quiz.

Bye.