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 that you're ready to work really hard and have lots of fun.

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

This lesson is called Explore and Recognise 2D Shapes, and it comes from the unit Recognise, Compose, Decompose and Manipulate 2D and 3D Shapes.

You're going to be learning all about 2D shapes today.

Don't worry if you haven't heard of 2D shapes before because I'm going to help you and we'll learn it together.

By the end of this lesson, you will be able to recognise and name different 2D shapes.

There are some key words that are going to be really important for your learning in this lesson.

You're going to practise saying them now after me.

Ready? My turn, circle, your turn.

My turn, triangle, your turn.

My turn, rectangle, your turn.

Lovely, well done.

There are going to be two parts to this lesson.

To begin with, you're going to be learning to match 2D shapes.

And then a little while later, you're going to be naming 2D shapes.

Let's start with learning how you can match 2D shapes together.

There are going to be two friends in this lesson who will come along to help you.

Their names are Aisha and Lucas.

Look out for Aisha and Lucas today because they might tell you something that's very important for your learning.

Aisha and Lucas are here and they are playing a matching game with some shapes.

Aisha is going to match these shapes together.

She says, "These shapes are the same." Lucas is going to match these shapes together.

Lucas says, "These shapes are the same." What do you notice about the two shapes that are left? Well done, the two shapes that are left are the same too.

Sometimes shapes can be different sizes but they are still the same shape.

Let's see what happens in the matching game this time.

Aisha says, "I will match these shapes together." "These shapes are the same." Lucas says, "I will match these shapes together." "These shapes are the same." Look at the shapes that are left.

The two shapes that are left are the same.

Do you think you can match some shapes that are the same? Which shapes are the same? Let's see if you've matched those up.

These two shapes are the same.

These two shapes are the same.

And these two shapes are the same, well done.

Sometimes shapes can be rotated but they are still the same shape.

Remember rotated means that something has been spun around.

Let's see what happens in the matching game this time.

Aisha says, "I will match these shapes together." "These shapes are the same." Lucas says, "I will match these shapes together." Let's see which ones Lucas is going to choose.

"These shapes are the same." Look at the two shapes that are left.

The two shapes that are left are the same.

One of them has just been rotated or spun around.

So they look different, but they are the same shape.

Let's see if you can match some shapes that are the same when they've been rotated.

Have a look at these, which shapes are the same? Let's have a look and see if you've matched them.

We have these two shapes that are the same.

And these two shapes are the same.

And these two shapes are the same, well done.

Aisha is looking for a shape that is the same as this one.

These are all the shapes that she's got to choose from.

Can you see one the same as Aisha's? Let's see if she can find it.

Aisha says, "This one is the same." She's going to put those shapes next to each other so she can see them more clearly.

Aisha can see that one shape has been rotated and the size of the shape is different too, but they are still the same shape.

Aisha says, "I know that these shapes are the same because they both look like a box and the other shapes didn't." Let's see if you can find some more shapes that are the same.

Look carefully at this one.

Which shape is the same? A, B, or C? Shape that is the same is B, well done.

What about this one? Look carefully.

Which shape is the same? A, B, or C? The shape that is the same is A, good job.

Now you can see lots of different shapes.

Aisha says, "I think these are different shapes." Lucas says, "I think these are all the same shape." What do you think? Let's think about this a little bit more.

Some of these shapes are taller and some of them are shorter.

Some of these shapes are narrower and some of them are wider.

Hmm, does that mean that they are different shapes or the same shape? These are all the same shape because like last time, all of these shapes look like a box.

So they are all the same shape.

Lucas was correct.

Do you think you might be able to find a shape that is the same when you've got more to choose from? Lucas says, "Remember that some of the shapes might be taller, shorter, thinner, or wider.

They might be rotated or they might be a different size." Have a look and see if you can find some shapes that are the same as the first shape you saw.

Did you notice these shapes? All of these shapes are the same as the first shape that you saw.

Well done if you noticed all of those.

You are going to go and play a game.

You will need to find somebody to play with, maybe a friend or a grownup who is near you that you'll be able to play this game with.

This is what you're going to do.

You're going to have a set of cards and you're going to lay your cards out like this.

So you can't see what's on them.

You've got to put them face down.

Aisha is going first in this game and she says, "I will choose two cards." So when it's your turn, you will choose two cards.

Then your partner, in this case, this is Lucas, is going to choose two cards after Aisha's turn.

So your partner will choose two cards after your turn.

If the two cards that you've chosen are a match, you keep them.

If the two cards that you choose are not a match, you put them back face down.

Who is going to collect the most pairs in your game, I wonder? If you finish, you can mix all the cards around and play it again.

Are you ready to go and match some shapes? Excellent.

Off you go.

Well done, everybody.

You tried really hard to match those cards together and find the shapes that were the same.

This is how you might have matched your cards up.

So these four shapes are all the same.

These eight shapes were all the same and these eight shapes were all the same too.

Well done for looking and thinking really carefully about those shapes and trying to find the shapes that were the same.

Now that you've had lots of practise at matching shapes, you're going to start learning the names for some of these shapes.

Are you ready to have a look? Excellent.

All the shapes that you're learning about today are 2D shapes.

2D means two dimensional.

This means that there are two different ways that you can measure a 2D shape.

If you look at this one, there are two different ways you could measure it.

You could measure its height, how tall it is and you could measure the width, how wide it is.

Because there are two things you can measure, this is a two dimensional or a 2D shape.

Another way that you can think about a 2D shape is like this.

If you put a 2D shape in between your hands and you hold it, you won't be able to feel it because a 2D shape is flat.

You've used words that you already know to start talking about 2D shapes.

Words like taller and shorter or thinner or wider.

But there are some mathematical words that you can use to describe 2D shapes as well.

And we're going to learn some of those together now.

Starting with this one, circle.

Let's practise saying it.

My turn, circle.

Your turn.

Excellent.

Have a look at all of these circles.

What do you notice about them? Can you see anything that's the same about all of these circles? Let's have a little think together.

A circle is round.

All of these circles are round, aren't they? A circle has a curved line around the outside.

There are no straight lines in a circle, are there? It is one curved line around the outside of the shape.

I'm going to see if you're good at spotting circles.

I'm going to show you lots of shapes.

Every time you see a circle, I want you to roll your hands around in a circle shape, like this.

Get those hands ready to roll every time you see a circle.

Let's go.

Are you rolling? Well done, that is a circle.

Let's keep going.

Oh, rolling again.

Excellent, that's another circle.

Do you think there'll be any more? Well spotted.

Well done.

(chuckles) Another circle.

Good rolling, everybody.

Well done.

You have had lots of practise at finding those circles.

Excellent work.

Now you're going to see if you can find four circles.

Have a look at all of these shapes.

Can you find the four circles? Off you go.

Here's where the four circles are.

We have one, two, three, four circles.

There they are.

Well done if you spotted all of those.

Did you remember the important things about a circle? A circle is round.

A circle has a curved line around the outside.

Now that you know circle, let's have a look at another 2D shape name, triangle.

Let's practise saying that one.

My turn, triangle.

Your turn.

Well done.

Have a look at all of these triangles.

What do you notice about all of the triangles? Shall we have a look together? A triangle has three straight sides.

A triangle has three vertices or corners.

Can you see the three sides and the three vertices on all of those triangles? You're going to watch these shapes carefully now.

This time, you are going to look for a triangle.

Every time you see a triangle, I want you to hold up three fingers because a triangle has three sides and three vertices.

Are you ready to look for those triangles? Great, let's go.

Well done.

Well done.

There's another one.

Well spotted, that's a triangle.

Yes, there's another one.

Well done.

That's a triangle.

Well done, everybody.

Now you're going to see if you can find four triangles.

Off you go.

Let's see where those four triangles are.

One, two, three, four.

There they are.

Those are the four triangles that you needed to find.

Well done if you found them all.

Did you remember the important things about a triangle? A triangle has three straight sides.

A triangle has three vertices.

Now that you know circle and triangle, you're going to learn another 2D shape name.

This time, you are going to learn rectangle.

Let's practise saying rectangle.

My turn, rectangle.

Your turn.

Lovely.

Look at all of these rectangles.

What do you notice about all of these rectangles? Can you see anything that's the same about all of these rectangles? Shall we have a look together? A rectangle has four straight sides.

A rectangle has four vertices.

Remember that means corners.

All of these rectangles have four straight sides and four vertices.

Lucas has noticed something about these rectangles.

He's looked carefully and these three rectangles stand out to him.

They're making him think about something.

Wonder what it is.

Shall we have a look? Lucas says, "I thought these were called squares." Did you think that these were called squares too? You're right.

Those shapes are called squares.

A square is a type of rectangle too.

It's a special type of rectangle because all four sides are the same length.

Aisha says, "These shapes are squares.

"They are also rectangles." Are you ready to spot some rectangles? You're going to watch all of these shapes carefully.

Every time you see a rectangle, you're going to make a corner shape like this with your hands.

Only make that shape whenever you see a rectangle.

Are you ready? Okay, let's go.

Well done.

Good job.

That is a rectangle that's been rotated.

Good spot.

Yes, you're right.

That's another rectangle.

And another one.

Well done.

I wonder if there's going to be any more.

Let's keep looking.

There's another one.

Well done if you spotted that one.

Oh, wow.

It's another rectangle.

Two in a row.

Yes, you're right.

That's a rectangle too.

Well done, everybody.

You spotted so many rectangles then.

Can you look carefully and see if you can find four rectangles? Off you go.

Okay, here's where the four rectangles are.

One, two, three, four.

Those are the four rectangles.

Some of them are trickier to spot because they've been rotated, but they are rectangles because it has four straight sides and four vertices.

Do you think that you can remember all the 2D shape names? Have a look at the pictures and see if you can remember them.

Now I'm going to give you a little clue.

I'm going to show you their names.

Let's see if you can match the names to the shapes.

Off you go.

Well done.

Let's see if you're correct.

You should have said that the first shape is a circle the second shape is a triangle.

The next two shapes are both rectangles and the last shape is also a square.

Well done if you remembered all of those.

Excellent work.

Aisha and Lucas are going to play another game now.

Lucas is feeling a little bit cheeky though.

He's going to try and trick Aisha by sometimes saying the wrong shape.

Let's see what happens when they play their game.

Watch really carefully.

Lucas has this shape.

He says, "This is a rectangle." Aisha says, "Yes, that is right." Then Lucas has this shape.

He says, "This is a circle." Aisha says, "Yes, that is right." No cheeky tricks yet.

I wonder what's going to happen next.

Lucas says, "This is a rectangle." Aisha says, "No, that is a trick." Uh-oh, Lucas was a bit cheeky and he's trying to trick Aisha by saying the wrong shape.

She didn't get tricked.

She spotted it, didn't she? Let's see what happens on the next go.

Lucas says, "This is a triangle." "No, that is a trick." (gasps) What's about the next one? "This is a rectangle." "Yes, that is right." "This is also a square." "Yes, that is right." "This is also a square." "No, that is a trick." Wow, Lucas really is a bit cheeky, isn't he? If you were playing the game with Lucas, what would you say to him this time? "Yes, that is right." "No, that is a trick." Of course it's a trick.

You know that that's not a triangle, that's a circle.

Cheeky Lucas was trying to trick you.

Well spotted.

What would you say to Lucas this time? "Yes, that is right." "No, that is a trick." Time you would say, "Yes, that is right." Lucas is showing you a rectangle.

Remember what we said earlier, even if a shape is a square, it is still a rectangle.

Squares are rectangles too.

Now it's your turn to go and be a little bit cheeky.

You are going to play the same game that you just watched Aisha and Lucas play.

Use the same cards that you used last time for your practise and you've got to choose.

You could say the right shape or you could be a little bit cheeky and you could try to trick your partner by saying the wrong shape.

Will your partner be able to spot your tricks? Make sure you swap over too, so that you can see if you can spot your partner's tricks as well.

Are you ready to go and play that game? Excellent, off you go.

Wow, well done everybody.

Lots of you are being very cheeky in that game.

This is how Aisha and Lucas played the game.

Let's see if you played it a little bit like this.

Lucas chose this shape.

He said, "This is a circle." Aisha said, "Yes, that is right." Then they swapped over.

Aisha chose this shape.

She said, "This is a rectangle." And Lucas said, "No, that is a trick." Lucas spotted Aisha's trick.

Did you spot your partner's tricks too? Well done.

Now that you're at the end of the lesson, you have learnt to look carefully at different shapes and be able to match them to other shapes that are similar.

You have learnt that 2D shapes are flat.

And that means that if you hold a 2D shape in your hands, you won't be able to feel it because it is flat.

You have also learnt to name some different 2D shapes.

And now you can recognise rectangles, squares, circles and triangles.

You have worked really hard in this lesson.

Well done, everybody.

I hope I will be back to do some more maths with you again soon.

Bye, everyone.