Lesson video

Hello, my name is Miss.

Jones.

And I'm going to be teaching your math today.

Today we are going to be looking at measuring and reading scales.

So I've got with me some measuring jugs to help.

Now this is a great skill to have if you enjoy doing things at home like baking.

Which is certainly something that I enjoy doing.

If you would like to ask a parent or carer, if you could use measuring jugs to help you with today's lesson.

Let's start today's lesson.

Today we are going to be applying knowledge of numbers within 1000.

Here's the lesson agenda.

We'll start with the new learning where we'll be looking at and reading scales.

Then there will be a talk task followed by an independent task, and then finishing off with the post quiz.

You will need, a pencil, and some paper.

And then there's an optional choice of finding around your house, asking your parent or carer first, if you could use items that you might use to measure things.

For example, you might have a measuring jug, a ruler.

I've got a measuring jug.

I've got my ruler.

And I've also got a tape measure.

Maybe you can see what you can find around your house to help you with today's lesson.

Let's start our new learning.

Here we have a measuring jug.

What are the intervals on this measuring jug? What does each mark represent? What unit of measure is this measuring jug measuring in? I'm going to pause, to give you time to think before we look at it together.

Are you ready? Let's look at what we know on this measuring jug.

I have some numbers given to me on the measuring jug.

Let's count them together.

Are you ready? 10, 20, 30, 40, 50.

Did you notice that the measuring jug is going up in intervals of 10? Let's look at the lines now then to see what each mark represents starting from the bottom counting up to my 10.

Let's see if we count in ones, I will get to 10.

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

That means that each mark must represent one.

The marks on this scale represent one.

The scales of intervals of 10.

And here it tells me the unit that my jug is measuring in.

My job is measuring in ml, which stands for millilitres.

Okay, here's a question for you.

How would I know if my jug was 30 millilitres full.

Pause and have a think.

Can you point to the screen to show where the jug would mark for 30 millilitres? Great.

You're right.

If my jug was 30 millilitres full, it would be full up to the line with 13 millilitres.

I had to go at doing this myself.

My jug measures in 50s.

And I filled up my water to 150 millilitres.

And here it sits directly on the line for 150 millilitres.

Now let's look at another jug.

This has a different measurement.

The scale is different.

Can you have a think what each mark represents? What is the scale intervals? And what unit of measurement is this measuring jug measuring in? Let's look at it together.

Let's look at what we know.

Count with me.

100, 200, 300, 400, 500.

This measuring jug is going up in intervals of 100.

That must mean each line isn't representing one this time.

Cause as I count them, one, two, three, four, five, six, seven, eight, nine, 10.

I don't land on 10 millilitres.

I land on a 100 millilitres.

I know, with my place value knowledge, that 10 tens represents 100.

So I'm going to have a go at counting and tens.

Are you ready? Count with me? 10, 20, 30, 40, 50, 60, 70, 80, 90, 100.

That means, the marks on this scale represent 10.

As I counted in tens, I got to my first reading that's been given to me 100.

This scale has intervals of 100.

Each number that is given to me is going up in 100s.

The measurement, this measures in millilitres.

If I filled up my measuring jug with water and filled it 300 millilitres, where would the water fill up to? Can you point at the screen on the scale where it would be.

Great job.

If I filled my measuring jug up with water and I wanted to be a hundred millilitres, I would fill it and the water line would sit here was 300 millilitres.

Well done.

Here we have a ruler.

What do the marks on the ruler represent? What unit of measurement do we measure a ruler in? I'm going to pause to give you time to think.

Are you ready? Can you tell the screen your answer? Well done.

Let's count together.

The marks on the ruler, let's read them.

Count with me.

Zero, one, two, three, four, five, six.

I'm going to pause there.

Did you notice that the marks are going up in ones? That means each mark represents one.

The intervals are one, and a ruler we measure in centimetres.

Now we are going to look at reading scales.

Here we have a line given for how full the jug is.

This means we need to use all the knowledge that we've just learned today in today's lesson, to help us.

When reading my scale, I can see that the jug is going up in.

Do you notice? Can you tell the screen? You are right.

It's going up in interviews of 10.

Each line represents one.

My line is directly on the number.

So it's directly on interval of 10.

It is on the number 30.

It's on the number 30 millilitres.

That means when I read the scale, the jug is 30 millilitres full.

That is how I'd write my answer.

Now it's time for your talk task.

For today's talk task, I would like you to read the following scales and record what they are measuring.

As you do this, say aloud to the screen these sentences.

The marks and the scale represent.

This scale has interviews of.

This measures, and the unit it measures in.

Pause the video, while you complete this task.

Let's go through the answers.

The first measuring jug is, 10 millilitres full.

The second measuring jug is, 200 millilitres full.

And the trundle wheel has measured 50 metres.

Now, let's look at a measuring jug and we've got a measurement here of 25 millilitres.

When I look at the intervals on my scale, I'm not given 25 millilitres.

This is why it's really important to know what each mark represents.

My intervals on my scale are going up in 10s.

Each mark, count with me to see what it represents.

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

Each mark represents one.

If I'm going to find 25 millilitres, I know that that's between 20 and 30.

I actually know that's halfway between as well, which is good to know, when I'm trying to work out if I've got my answer correct.

So I'm going to start on 20 millilitres and I know that 25 is five more.

So I'm going to count on till I get to 25.

20.

Count with me, 21, 22, 23, 24, 25.

So if I was going to draw a line to show 25 millilitres, it would be here.

Now it's your turn.

Can you point to the screen where I would draw 38 millilitres? Can you do that now? Great.

Let's see if you were right.

Let's look at the intervals on the scale and what each mark represents.

This is the same measuring jug as before.

So my intervals are intervals of 10.

I know that my measuring amount is 38 millilitres.

So I need to know what each mark represents.

I know it's the same job as before so my marks represent one.

So I'm going to go to 30 and I'm going to count on eight.

Count with me.

One, 31, 32, 33, 34, 35, 36, 37, 38.

And I know that 38 is near to 40.

So I'm roughly right? Let's see.

Yes.

I was correct.

We near.

It is now time for your independent task.

For your independent task today, read the measurements on the scales and record them.

Remember to look at the intervals the scales are going up in, and what each mark represents.

Pause the video to complete your task.

Resume once you are finished.

Let's go through the answers.

This blue box is being measured using a metre stick.

There are 100 centimetres in one metre.

The interval on this scale is going up in 10 centimetres.

Each mark represents one centimetre.

The length of this blue box lands on 40 centimetres.

Therefore the length of this blue box is 40 centimetres.

This jug on the scale, the intervals are going up in 10 millilitres.

Each mark represents one millilitre.

The reading on this scale is 17 millilitres.

On this scale, the interval on the scale is going up in 100 millilitres.

Each mark represents 10 millilitres.

The reading on this scale is 430 millilitres.

Here is a ruler, a 15 centimetre ruler.

Each interval was going up in once.

Each mark represents one centimetre.

The heights of this blue books is 12 centimetres.

I hope you've enjoyed today's lesson.

Now, It's time for you to complete your quiz.

Hopefully see you again soon.

Bye.