Lesson video

Hello, everybody.

Welcome back to your second lesson on materials with me, Miss Roberts.

I'm really excited for this lesson 'cause it's following on from last lesson on raw materials.

This lesson is all about synthetic materials.

We'll learn what that big fancy word means in a moment.

First of all though, let's think about what we need this lesson.

I've got Lenny the lion here, and he helps me with all of my learning and he was really impressed with you guys last lesson.

So make sure that you're talking to your screen really loudly so that he can hear you.

If you want to get your favourite teddy, you can do that.

And also you're going to need the following resources.

A pencil or a pen, a ruler, and a notebook.

So pause the video now and go and get all of the things that you need.

Good job! Okay, I think I'm ready to start.

Let's just have a quick recap.

You might recognise this screen from last lesson, and this is where we learnt about what a material actually is.

So can you remember, what is a material? What did we say? It's a substance that has a name, well done! So what were the three materials that I showed you on the screen? Can you see what they are again? We had on the left, chalk, well done.

In the middle iron, well done.

And paper, good job team.

That was a really good recap of what a material is.

So in today's lesson we'll go through our star words and then we're going to learn about synthetic materials.

Then we'll play a game which is Name the material! We'll think about their properties and uses, and then I've got to task for you.

Are you ready to get started? I said, are you ready to get started? Yes, fantastic! Okay.

My favourite moment of each lesson is ready to go.

So star words, star words, star words! Well done! The first word is raw.

Your turn.

Remember the actions.

Synthetic.

Your turn.

Synthetic.

Your turn.

Material.

Your turn.

Flexible.

Your turn.

With the actions, flexible.

Your turn.

Durable.

Your turn.

Durable.

Your turn.

And lastly, malleable.

Your turn.

Malleable.

Your turn.

What did malleable normally refer to? What type of material? What did I say last week? Good job! In the last lesson, I said that malleable is normally referring to metals.

Okay, so synthetic materials.

Now our star word for synthetic is this, do you remember? I talked about this in the last lesson and I said that because this is a raw material, our action is our two hands out.

Then when we put off fingers together and we interlock them, it's almost like you're making something new out of your two original materials.

So, that's pretty much what a synthetic material is.

You take two materials, you mix them together and you change it into something different.

And that's why synthetic materials have to be made and they aren't found naturally.

So they're raw materials that have been changed by humans to make a different material.

Can you name some of the materials on the screen? What's that one on the left? That's lots of what type of bottles? Well done.

Lots of plastic bottles because plastic is a synthetic material.

Can you say that with me? Plastic is a synthetic material.

Good job! What about the one in the middle at the bottom.

Those are lots of pieces of, paper, well done! Paper is a synthetic material because it's been made by humans.

Why is paper a synthetic material? Can you tell your screen? Well done because it's been made by humans.

What about the one on the right hand side of your screen? Those panes that have been split up.

I mentioned that one in the last lesson.

Can you remember what it was? You might see it on your window.

Well done.

That's glass and glass is a synthetic material that's made by humans.

And the last one in the middle, I'm sure you'll recognise that from buildings or maybe even your house looks a bit like that because those materials are, bricks, well done.

Team, don't forget, the reason I sometimes pause is because I want you to say the word out loud.

So don't forget, that's why you've got your favourite Teddy by your screen so that you can speak really clearly, because it helps us to remember things when we say it out loud, not just thinking it.

So, well done for speaking to your screen.

Now, I wonder have any of you got to any of these materials in your home? For instance, have you got a plastic bottle like me? Now I've got one that you can reuse, but it's still made of plastic.

Do any of you have any paper in your home? I've got my paper magazine here and this is made of paper.

Out the window I can also see, is made of glass.

Which materials can you see around your home? Or maybe you're in your classroom.

Can you pause the video and go and see how many examples you can name now? Well done, you were so good at that! Let's have a look.

So just to recap, synthetic materials are not found naturally.

They are not found in the ground and they cannot come from living things like raw materials come.

So they have to be changed by humans.

What are the two things that we know about synthetic materials? Can you tell your screen really loud and proud? They are not found and they've been changed by humans.

Well done team.

You're doing really well so far this lesson at speaking really loudly and clearly.

So plastic, paper, glass and brick are all types of what material? Synthetic material.

Good job.

I've got a little task for you now.

I've got question one and question two.

In question one, I want you to fill in the gaps with the words that you know, if you've been listening.

And the question two, is all about examples of synthetic materials we've just looked at.

So, pause the video and have a go at the task now.

You can write it in your notebook or you can download the worksheet if you can.

Well done! Pause the video if you need more time, because I'm going to go through the answers.

Good job! So question one, synthetic materials are made from raw materials that have been changed.

Well done.

Give yourself a tick if you've got those, or a yes! If you spoke them loud and proud to your screen correctly.

Then the four examples of synthetic materials that we had were glass, plastic, brick, and paper.

You can give yourself a tick for each one you got correct.

Or if you want to, you can go yes! If you got them right by speaking to your screen, if you haven't written them down.

I do find team, that writing things down in my notebook really helps me to remember things.

So if you have got a notebook or anything to write things down on, with a pencil or a pen, then I really suggest that you do.

Okay.

So now we're going to look at each material in a little bit more detail.

Plastic is one of our synthetic materials.

It's strong, it's durable, and it's a synthetic material that can be changed into almost any shape.

It can also be quite light.

So it's not very heavy to carry.

Plastic is made by heating chemicals, mainly oil, gas, or coal.

Which examples can you on the screen? They're all made of plastic, but what are the objects? Can you name them? What's all the ones on the left hand side? They're all plastic bottles.

Well done! What about in the picture that says, stop? What can you see surrounding the word, stop? Well done! You can see plastic cutlery or knives, forks and spoons.

The reason that image says stop is because it's a advert that wants people to stop using plastic forks and knives and spoons because we only use them once and then we throw them away.

They can't be reused, but don't worry, we'll get on to recycling later in this unit.

Above the word stop and the cutlery those are also lots of what? What objects are those? Plastic bottles, well done.

What about that one on the right? What's that an example of? You might have it in your kitchen, I've got one right here.

It's a plastic bin bag.

And we tend to put our rubbish into bin bags made of plastic.

I wonder, can you think, why do we put our rubbish into plastic bin bags rather than say, using cotton bags? What do you think? Can you tell your screen? Mm-hmm.

Well done! Because plastic is durable, and it's strong, the rubbish doesn't fall out of it and it doesn't leak either.

If I tried to put my old yoghourt pot into a cotton bag, it might seep or leak through, and then my old yoghourt would go everywhere and it probably get quite smelly.

Well done.

So let's have a look at the next synthetic material.

Paper.

Paper is a synthetic material that comes from trees.

Wood can be turned into a pulp using chemicals.

Now some of you might be thinking, but I thought wood was a raw material, not a synthetic material and you'd be right.

Wood is our raw material, but paper is made synthetically by humans out of wood, but it's changed the wood by using chemicals and that's why it makes it a synthetic material.

Wood is turned into a pulp using chemicals and then it's made into wet paper, that's then squeezed and dried to make the paper that we know in books, because we don't use soggy paper for books, do we? So that's how paper is made.

Now glass.

Glass is made from sand and the sand is heated to a very, very, very, very, very high temperature.

And then it's turned into a hot liquid gas.

The melted glass can then be moulded into shapes or rolled into sheets and then it's allowed to harden.

What objects made of glass can you see on the screen? What's that thing on the left? I'm sure you've all seen one of those.

Well done.

It's a phone.

Now, not the whole phone is made of glass, but these days the phone cover tends to be made of glass that's because it tends to be transparent so you can see through it and it's also because lots of our phones these days are touch sensitive and glass is useful for that.

Now, what's the object on the right hand side of your screen team, that's a, window! Another really useful object to have that's transparent, which means you can see through it.

It wouldn't be very useful to have a window made of wood, would it? Because you wouldn't be able to see through it.

That's one of the properties of glass that it tends to be transparent.

And our last synthetic material that we're looking at today is brick.

Now, bricks are mainly made out of the raw material clay.

It's put into moulds or cut with wires and then baked in a very hot oven.

The colour of brick depends on the clay from which it was made.

So the bricks on the screen you can see will have been made from some sort of brown or red clay.

What do you know that's made out of bricks? We've already talked about it once already this lesson, but can you tell your screen again? What do we tend to use bricks for? Well done! We tend to use them to build houses because they're very durable and very strong and they're also hard, which means the house hopefully isn't going to wobble.

That makes it very useful.

Okay, so now I've got a task for you to see if you've been listening so far this lesson.

On the screen, on the left hand column are your synthetic materials.

On the right hand side are the raw materials that they came from, but they're all jumbled up.

So what I'd like you to do is either jot them down and draw lines or download the worksheet, or you can use your finger to just point to the correct one.

I want you to match up the synthetic material with the raw material that it came from.

Pause the video and have a go now.

Well done! Pause the video if you need more time, because I'm going to go through the answers.

So, plastic comes from oil, gas or coal.

Glass comes from sand.

Paper comes from wood.

And brick comes from clay.

You can either give yourself a tick if you've written them down, or if you did them with your finger on the screen just out loud, you can go, yes! In fact, shall we all do that to say well done to ourselves for working so hard so far, this lesson, are you ready? One, two, three, yes! Well done! I am really enjoying learning about synthetic materials, I hope you are too.

And now we have a game and I'm really excited to play this with you.

I want you to shout out to your screen as quickly as you can the material that I describe.

We'll do the first one together, and then each time I'll give you a bit more time so that I don't give you the answer.

What am I? I am made by shaping clay in moulds and then baking it in hot oven.

What material is that? This is one of our synthetic materials and it's, brick.

Well done.

So for the next one team, I'm going to read it and then I want you to tell your screen nice and loud and proud.

What am I? I am made by making pulp from wood, which is made into a mat and dried.

What am I? Well done! I'm paper.

Some of you even shouted that out before I got to the end, that's really impressive.

You must be listening and working really hard.

What am I? I am made from heating chemicals that come from oil, oh some of you've already said it! Well done! From oil, natural gas or coal, what am I? Tell your screen.

Good job.

This is plastic.

And lastly, what am I? I'm made from heating sand to a very high temperature and then shaping it as it cools.

What am I? Tell your screen.

Good job.

I am glass.

You guys are so impressive! I am going to give you an awesome cheer because you've been working so hard this lesson.

It's time to look at the properties and uses of synthetic materials.

So let's keep going.

So here are some of the properties that we're going to use, and then I'm going to set your task.

Let's read them out together.

We'll do the top line and then the bottom line.

So my turn, your turn.

Hard.

Strong.

Flexible.

Soft.

Malleable.

Ooh, let's try that one again.

Malleable.

Well done.

Shiny.

And durable.

Let's read them again and this time we're going to use some actions.

So watching me really carefully.

Hard.

Your turn.

Strong.

Your turn.

Flexible.

Your turn.

Soft.

Your turn.

Malleable.

Your turn.

Shiny.

Your turn.

And durable.

Your turn.

Well done.

So what I'd like you to do is draw this table.

On the left column is going to be the object.

On the middle column is going to be your material.

And on the right hand column, I want you to think about what properties make it useful.

So pause the video and draw that table out and then I'm going to explain what I'd like you to do.

Good job! Pause the video if you need more time to draw that table out and then carry on.

If not, you can just read along with me on the screen.

So the first object that I'm going to show you is a plastic bag.

So the object, well actually let me show you it properly, 'cause otherwise it doesn't look like a plastic bag.

So here I've got my plastic bag.

I have a handle on it and I use it when I go and shop.

I like to reuse my plastic bags, 'cause it's good for the environment.

So what's the object? Well, the object is a plastic bag.

But what's the material that it's made out of? And what properties make it useful? Let me show you an example.

In your table I'd like you to write the object, which is the plastic bag and the material is plastic.

Now on the screen, you can see the words for the properties.

Choose which ones you think make it useful.

You might choose more than one and write them in the third column on your table.

Have a go now.

Okay, pause the video if you haven't finished writing in those properties, because I'm going to show you which ones I thought.

I think plastic is strong, flexible, and durable.

So when I put lots of heavy, heavy objects inside it, it doesn't break.

Look, I can pull on it and it doesn't rip.

That makes it nice and durable and strong, which is really useful for carrying shopping, which is why it's made, which is always good.

So I've got two more objects for you and I'd like you to fill them in on your table, or you can tell your screen.

Here are the properties that you're going to need when you fill in your table.

And I'm now going to show you the two other materials, the two other objects, that I'd like you to write about in your table.

The first one is a glass bottle.

So this is a glass bottle, but why is that useful? What's the material? And what are the properties that make it useful? The third material, the third object, sorry, is a magazine.

I'm not going to tell you what it's made from, cause I'm sure you can see by showing you like this.

This is a magazine, but what's the material and what properties make it useful? I'd like you to pause the video now and complete your table using the properties on the screen.

Off you go.

Well done! Pause the video if you need more time.

Okay and here is your final task of today.

I've got another table for you, but don't worry you can write this out or you can talk along on the screen.

What I'd finally like you to do is to sort the materials into the correct column.

On the left column are the synthetic materials.

On the right hand column need to go your raw materials.

So the materials on the screen are as follows.

Coal, wood, brick, oil, plastic, cotton, paper and wool.

Which ones of those are synthetic? And which ones are raw? Pause the video and sort them now.

Well done! Pause the video if you need more time sorting those materials.

I'm going to go through the answers so make sure you're ready.

Good job! So our synthetic materials were brick, plastic and paper.

And our raw materials were coal, wood, oil, cotton and wool.

Well done everyone! You sorted them really brilliantly.

Make sure you tick your answers or give yourself a final yes! For doing those really brilliantly.

Just before we finish I've got a think question for you.

And our think question is this, why do you think we started using synthetic materials? Why do you think we started using synthetic materials? Now, what I'd like you to do is stop and have a think and I'd like you to really consider that question.

And then what I'd like you to do, at some point today, or maybe even tomorrow, is ask somebody either at home or at school, what they think.

And I want you to see what they say and you could have a conversation about it.

Why do you think we started using synthetic materials? I'm going to leave you with that question.

So well done everyone.

You've done really well today at learning all about synthetic materials.

And now we know the difference between raw and synthetic materials.

I'm really excited to learn more about materials in our next lesson together.

Lenny the lion is so impressed with your learning! This was a tricky lesson today, so well done everyone.

And he's, yeah? Really? No! Next lesson? You will never guess what we're going to do next lesson.

You'll have to find out in lesson three of materials.

Well done everyone and see you next time.

Bye!.