Lesson video

Hi everyone.

It's Ms. Molnar here and it's Harold, the hedgehog.

We are going to be consolidating our learning on shape and sorting.

We're going to be using our brains today to do some thinking and explaining.

So you're not going to need anything else for this lesson except your brains.

So everyone, make sure your maths brain is switched on already and let's start our learning.

All right.

I think that we want to start off by playing a little bit of a game to get us thinking.

So we're going to play Harold's favourite game, I spy.

So Harold's going to tell me what he spies first and let's see if you can find it.

Alright.

Harold says I spy with my little eye two red fish.

Can you find and count the two red fish? Way to go! Well done everyone.

All right, I'm going to go this time.

I spy with my little eye five little mice.

Can you find the five little mice? Great job everyone.

Alright, this time I'm going to have a go.

I spy with my little eye five little mice.

Can you see the five little mice? Great job, everyone.

Alright.

Could you pause the video and tell us what you spy? Pick something, count how many there are and tell us what you spy.

Great job, everyone.

All right.

We're going to use some of our positional language to describe where things are in the picture.

So.

Hm, let me see.

I'm going to start looking at the frogs.

Do you see all of those colours of frogs? There's quite a few of them.

So I would like you to tell me what colour frog is in between the pink frog and the green frog.

Which frog is in between the pink frog and the green frog.

See if you can find it.

If you said the orange frog, well done.

Way to go friends.

Alright, let me see what else we can do here.

Let's keep looking at those frogs.

All right.

Which colour frog is behind the green frog? Which coloured frog is behind the green frog? Now there might be more than one answer here.

Have a look.

Well, if you said the yellow frog or the purple frog you're right, because both of them are behind the green frog.

Alright.

Let's take a look now at the spiders in the spider web.

Do you see them up on the top of the house? Well done.

Alright.

Which colour spider is beside the orange spider? Which colour spider is beside the orange spider? That's right.

It's the blue spider.

Fantastic.

Alright.

I would like you to describe for me where the fish are.

How could you describe for me where the fish are? If you said the fish are in the water or in the river, you're right.

You also might've said the fish are under the bridge.

Way to go everyone.

Alright, let's play another game.

Have you ever played the game Guess Who before? Well, you might've played it a different way, but we're going to play Guess Who as in guess the shape.

So Harold is going to have a think in his head.

Do you see the three shapes up on the screen? Harold is going to choose one of them.

He's going to have a think in his head.

He's going to picture one of those shapes in his head, and he's going to describe it to you.

And we want you to point to the one that you think he's speaking about.

Okay.

Are we ready, everyone? Alright.

Harold says, I have a curved surface and two flat faces.

Hmm.

Who am I? Which shape do you think Harold's talking about? It has a curved surface and two flat faces.

Well done.

If you pointed to the cylinder at the bottom, you're so right.

It's got a curved surface around it and then it's got two flat faces.

Way to go.

Alright.

Now there's two more shapes up there.

Harold's going to have another thing again, and he's going to describe it to us.

Are we ready? Alright.

This time.

Okay.

This shape has no vertices and no flat faces.

This shape has no vertices and no flat faces.

Point to the shape you think it is.

If you pointed to the red sphere, well done.

You're so right.

All right.

What we would like you to do is to pause the video for a second and can you describe the last shape? What could you say about its edges or vertices, it's surfaces? What could you say about it to describe it? Well done everyone.

So you might've said this cuboid has, you might say it has several vertices.

You also might have said it has all flat faces.

You might've said it has no curved surfaces.

Way to go, everyone.

Great describing.

Okay.

We've got a bit of a challenge for you for your talk task today.

So we can see all of the shapes up on the top of the screen uncovered.

Now, we've got each of those shapes mixed up at the bottom, but we've got some green boxes covering them up.

So what we would like you to do is use your reasoning and explaining skills to make a good guess at which shape is hiding under each of the red boxes.

Okay? So if you start with the first one, you might say, "I think this shape is the cone." You might look at the top and point to the shape that you think it might be, because I can see it's got a curved surface and a flat face.

You might also say, "Ooh, but this actually looks like a cylinder because it's got a curved surface and a flat face.

It can also be that shape.

So we want you to pause the video, take a look at each of the covered-up shapes below.

Can you try and match them with whatever shape you think it matches to, to the top and make sure you say out loud why.

What's your thinking behind choosing that shape.

All right, pause the video and we'll come back together.

All right, everyone.

Shall we go through what we found out about each of the shapes? Let's start with the first one.

Which shape did you think it was? Point to the shape that you think it was.

Well done.

If you picked the cylinder, way to go.

I thought at first, it might've been the cone.

It tricked me a little bit.

We could have said it was a cylinder because it's got a curved surface, and it's got a flat face.

All right.

What about this one now? Was this one a little bit trickier? Did you think it could have been more than one shape? Well, it looks to me like it be a cuboid or a cube because they both have flat surfaces and they both have lots of vertices, but I can see a little bit of a clue in the corner.

I can see in the very corner of the shape that it looks like it's a much shorter shape.

So that tells me it must be the cube.

Alright, moving on.

Looking at the shape next, we've definitely got some curved surfaces here.

Can you point to the shape that you think it belongs to? If you pointed to the sphere, well done.

Way to go friends.

All right, moving on.

We've already got, we know we've already got the cuboid, or we've already know that we've got the cube.

So that means this shape must be a bit longer and it must be that cuboid.

Way to go.

And then finally, this one was a bit tricky because it was turned on its side.

We've got the cone, but it was just facing the other way.

Well done everyone.

Okay.

It's time to get a bit tricky in our main task, everyone.

We've got a Spot The Mistake.

So Harold has been sorting some 3-D shapes.

He sorted them in this diagram from shapes that have at least one curved surface and shapes that have at least one flat face.

So the ones that have at least one flat face, will go in this side.

So the ones that have at least one flat face are going to go on the right side.

The shapes that have at least one curved surface are going to go on the left side.

Now there's also a shape in the middle.

Do you see that the two circles, they join up? That means it's been sorted that that shape has both a flat face and a curved surface.

So we want you to have a little bit of a look and make sure that all of the shapes are in the right spot.

Okay? So you're going to pause the video.

You can go find this sheet in the worksheet and have a really close look and if you see a mistake, you need to tell us why it's a mistake.

Alright, pause the video and come back and we'll discuss it when we're ready.

Okay.

Were you able to spot some of Harold's mistakes? Oh, don't worry, Harold.

We'll help you find them.

Okay.

So what mistakes did you find? There was quite a few of them, weren't there.

So let's start by looking at the cone.

Okay, so on the cone, at least one curved surface.

Does it have a curved surface? It sure does.

But does the cone also have a flat face? It does! So the cone needs to go into the middle.

Alright.

Let's look at the cube below.

Hmm.

Where was that supposed to go? Does it have a curved surface? No, it doesn't.

That one's in the wrong spot.

It needs to go with the flat face side.

All right, moving on.

Oh my goodness.

So far, we've just been all wrong.

What about the one in the middle, the sphere? Is that in the right space? Remember, the ones in the middle need to have a curve surface and a flat face.

Does it have a flat face? No, it does not.

So it needs to go on the curved side.

All right.

Let's go over to the other side now.

Let's go to the cuboid, has at least one flat face.

It does.

Is it in the right spot? It sure is.

Well done.

Now last one at the bottom, the cylinder.

Has at least one flat face? Yeah.

Oh, but does this one also have a curved surface? It does.

So it needs to go into the middle.

Let's take a look at how it should have been sorted.

All right.

So if we had sorted the shapes correctly, this is how they should have been sorted here.

Way to go.

That was a really tricky question, everyone.

Well, we think you've done a fantastic job at your learning today everyone.

If you'd like to, you can share your learning with your teacher, but also here at Oak, we would love to see what you've been up to as well.

So you can ask a parent or carer to share your learning with us on our social media.

Well, that's all the time we have for today, I'm afraid.

So we'll see you next time, everyone.