Lesson video

Hello everybody.

My name is Mrs. Johnson.

I am so excited to be here today to help you with some of your maths learning.

I hope you are ready to work hard and have lots of fun.

Let's have a look at what we are going to be learning about today.

Today's lesson is know that a right angle describes a quarter turn and it's from the unit, "Right angles".

By the end of this lesson, you will be able to describe turning through a right angle as making a quarter turn and you will recognise clockwise and anti-clockwise turns.

You might have learned about quarter turns before and you might have learned about clockwise and anti-clockwise turns.

If you close your eye and picture the hands on a clock, that will help you to remember clockwise.

The direction of the hands on a clock is the clockwise direction.

If you are going the opposite way to the hands on a clock that is anti-clockwise.

There is some key words for you to practise that will really help you with your learning today.

I'm going to say them first and then I would like you to say them after me.

Ready? My turn, quarter turn.

Your turn.

My turn, half turn.

Your turn.

My turn, three quarter turn.

Your turn.

My turn, full turn.

Your turn.

Well done.

Let's have a look at what those words mean before we start the rest of the lesson.

One right angle makes a quarter turn.

Two right angles make a half turn.

Three right angles make a three-quarter turn, and four right angles make a full turn.

There are going to be two parts to this lesson.

To begin with, you are going to identify and describe quarter turns and then in a little while you're going to explore directions using mathematical vocabulary.

That means those key words that we've just been practising saying together.

There are some children who are going to help you with your learning today.

Their names are Aisha and Laura.

Watch them really carefully because they will help you to understand some of the things that we are going to be learning about in this lesson.

I can see lots of interesting places on here now.

I can see a house, a church, a slide and a tree, and I notice that there is somebody standing in the middle.

They are facing the house.

Aisha says, "Turn clockwise to face the church".

Now the person has turned.

They say, "I have turned one right angle".

Aisha says, "You made a quarter turn".

Now she's facing the church, let's see what happens next.

Aisha says, "Turn clockwise to face the slide".

She's going to make the turn.

"I have turned one right angle".

"You made a quarter turn".

Now Aisha says, "Turn clockwise to face the house".

She has turned to face the house.

She says, "I have turned two right angles".

Aisha says, "You made two quarter turns".

that is the same as a half turn.

Two quarter turns is the same as a half turn.

Now the direction of the turn has changed.

"Turn anti-clockwise to face the tree".

"I have turned one right angle".

"You made a quarter turn.

Turn anti-clockwise to face the church".

"I have turned two right angles".

"You made a half turn".

When you make a right angle turn, it is a quarter turn.

You have turned one quarter of a full turn.

Aisha said, "I could show this using my angle strips".

Let's place the angle strips and turn them one right angle, a quarter turn.

There we can see that is one quarter of a full turn.

Which arrow shows a quarter turn? Do you think it's A, B or C? The quarter turn is A.

Well done If you said A.

When you make two right angle turns, it is a half turn.

You have turned one half of a full turn.

Aisha's going to show us using her angle strips.

The angle strips have turned half of a full turn and two right angles, two quarter turns.

Which arrow shows a half turn? Do you think it's A, B or C? The arrow that shows a half turn is C.

Well done if you said C.

When you make three right angle turns, it is a three-quarter turn.

You have turned three quarters of a full turn.

Aisha's going to show us again using her angle strips.

This time she's turning three right angles and we can see that three right angles is the same as a three-quarter turn.

Which arrow shows a three-quarter turn, A, B, or C? The three-quarter turn is B.

Well done if you said B.

You are going to practise making some turns now by going to do this piece of work.

Laura is standing in the middle of the map and at the moment she is facing the church.

I would like you to complete this sentence in as many different ways as you can.

Laura turns (vocalises) right angles to make a (vocalises) turn in a (vocalises) direction.

Now she's facing the (vocalises).

You can choose how many right angles you would like Laura to turn.

You can say whether she has turned a quarter turn, a half turn or a three-quarter turn and you can say whether it was clockwise or anti-clockwise.

Finally, you can say if she's facing the slide, the house, the tree or the church.

Are you ready to try out some of your directions on Laura? Ready? Off you go.

Well done everybody for really thinking carefully about the different directions that you could give to Laura to complete these sentences.

I'll just show you two different examples but there are lots of other ones you might have thought of too.

You could have said that Laura turns one right angle to make a quarter turn in an anticlockwise direction.

Now she's facing the tree.

A different one you could have said is Laura turns two right angles to make a half turn in a clockwise direction.

Now she is facing the house.

Well done if you were able to think about clockwise and anticlockwise along with quarter turn, half turn and three-quarter turn.

Now it's time for the second part of the lesson where you are going to start exploring directions using those important words that we've been practising in this lesson.

You're going to watch Laura follow some directions on this new map.

Can you see there is a pizza shop, a cake shop, a pet shop, and then home.

There's also a start, which is where Laura is now.

Let's see where Aisha is going to direct her to.

She says, "Go forward three squares".

Let's watch Laura do that.

One, two, three.

"Make a quarter turn anti-clockwise".

There she is, oh, I think I might know where she's going, do you? Aisha says, go forward one square.

And now she has arrived.

Laura says, "I reached the cake shop".

I wonder where she's going to go now.

She's been into the cake shop.

She's bought her cake.

Where is Aisha going to send her next? Aisha says, "Make a half turn".

Ooh, Laura says, "Which direction shall I turn"? Aisha hasn't said if it's clockwise or anti-clockwise.

What do you think? Aisha says, "When you make a half turn, the direction doesn't matter" So she can choose clockwise or anti-clockwise, she'll still be facing the same way.

There, she's made her turn.

Now Aisha says, "Go forward one square.

Make a quarter turn anti-clockwise.

Go forward two squares" One, two.

"Make a quarter turn anti-clockwise".

Do you think she's going to face the pet shop or do you think she's going to face home? Can you imagine Laura making a quarter turn anti-clockwise? Let's have a look, which way is she going to face? She's facing home.

"Go forward two squares" One, two.

"Make a quarter turn clockwise".

And now Laura can say, "I have reached home".

Aisha gave really good directions, didn't she? To help Laura get to the places that she needed to go.

Let's check that you could follow Aisha's directions.

Laura has gone back to the start.

You are going to follow Aisha's directions and see if you can work out where Laura ends up.

Ready? She says, "Go forward five squares.

Make a quarter turn clockwise.

Go forward one square".

Pause the video if you need more time.

Can you follow those directions and work out where Laura is going? Let's have a look.

If you follow those directions to go forward five squares, make a quarter term clockwise and go forward one square, you end up at the pet shop.

Well done if you said the pet shop too.

Aisha is going to give Laura directions to go back to the cake shop.

Perhaps Laura wants to buy another cake for her friend.

Let's see what the first direction is.

"Make a half turn anti-clockwise.

Go forward one square.

Make a quarter turn anti-clockwise.

Go forward two squares".

I wonder if you could complete the directions to the cake shop.

What are the directions that you need to give to Laura so that she can reach the cake shop? Pause the video and have a go at that now.

Okay, for Laura to reach the cake shop first you need to tell her that she needs to make a quarter turn clockwise and then you need to tell her to go forward one square and now she has reached the cake shop.

Well done if you got those directions correct.

Now it's time for you to check if you can give a whole set of directions.

Laura has got home but she forgot to get the pizza.

Could you give some directions from home to the pizza shop to help Laura get her pizza? You can tell your directions to a partner and see if they agree with you.

Pause the video and give your directions now.

Okay, let's have a look and see if you've managed to direct Laura to the pizza shop.

First, she needs to make a quarter turn clockwise.

Then she needs to go one, two, two squares forward.

Then she needs to make a quarter turn clockwise again.

Then she needs to move one, two, three, four, move forward four squares.

Then she needs to make a quarter turn anti-clockwise and then she needs to move forward one square.

That gets her to the pizza shop so that she can pick up her pizza.

Well done if you've got those directions correct.

Now you are going to practise giving directions, but this time you're going to give directions to a robot.

This robot is in a bit of a maze.

It needs to find its way out of the maze and it is not allowed to tread on any of the crosses.

It also wants to collect the treasure.

Your mission is to give directions to this robot so that it can collect all the coins and then escape from the maze without treading on any of the crosses.

Try to use the useful words to help you give your directions.

You have quarter turn, half turn, three-quarter turn, clockwise and anti-clockwise.

Let's see if you can help this robot to collect all the coins and escape the maze.

Ready? Off you go.

Well done everybody.

Your directions have really helped that robot to collect the treasure and try and escape.

This is how you might have started your direction, but it depends on which coin you wanted the robot to collect first.

I've said, "Go forward one, make a quarter turn anti-clockwise, go forward one, make a quarter turn clockwise, go forward two, make a quarter turn anti-clockwise" So I collected that coin first.

"Go forward two, make a half turn clockwise".

Now I've collected the second coin.

And then my directions would continue until I've collected all the coins and escaped the maze.

Did you remember to talk about the direction of your turn, clockwise or anti-clockwise? And did you remember to tell the robot how far to turn, a quarter turn, a half turn, or a three-quarter turn? Well done if you used those key words in your directions.

Now that you are at the end of the lesson, you know that a right angle can be described as a quarter turn.

You know that a quarter turn is one quarter of a full turn.

A half turn is two right angles and it is half of a full turn.

A three-quarter turn is three right angles.

You can give directions by describing the turns that need to be made using clockwise or anti-clockwise.

You have thought very carefully about how to give directions today and how to talk about the amount of turn and the direction of the turn to follow directions.

You have done some excellent work in this lesson.

Well done everybody.

I hope that I will see you again soon for some more maths learning.

Bye everyone.