Lesson video

Hi everyone.

And welcome to a science lesson with me, Miss Emms. I'm feeling really excited to teach this lesson.

I hope you are ready, and I hope you are looking forward to what we're going to be learning today.

So, let's have a look.

In today's lesson, we are going to be answering the question what is the difference between raw and synthetic materials? And you are with me, Miss Emms. Now, don't worry if you don't already know what a raw material is and what a synthetic material is because we're going to have a look at those definitions today.

Hopefully you've completed lessons one, two, three, and four of this unit before you have a go at this lesson, because that learning is going to help you in this lesson.

Okay.

So here is our lesson agenda.

We start off by looking at our star words, so important words that we need to know in order to access today's learning.

And then we're going to have a look at some recap questions to think about our previous learning.

And then we're going to move on to looking at raw and synthetic materials and looking at some examples of each of these things.

And after that, you are going to do a sorting activity.

So you are going to use your understanding and your knowledge of raw materials and synthetic materials to sort them into those two categories.

And finally, it will be time for the end of lesson quiz.

Okay, you're going to need three things in this lesson.

You'll need an exercise book and paper, you will need a pencil or a pen, and you'll need your brain.

Your brain is already in there, and it's already ready to do some great learning.

So you don't have to go and get that.

But if you need to go and get your exercise book or your paper and your pencil, then can you pause the video now to go and get both of those things.

Off you go, pause now.

Great, well done everybody.

So let's have a look at our star words, star words, star words! Materials, amazing.

Raw materials.

We're going to look at the definition of raw materials and synthetic materials in this lesson.

But can you say the words again so we practise saying this important language, raw materials, synthetic materials.

Great.

And natural, manmade.

Fantastic.

So a quick recap, which material in lesson four did we find was the most absorbent? there were perhaps two that you might be thinking of that were really absorbent.

Which materials were able to absorb lots of water? Can you tell your screen that mm was the most absorbent? Off you go.

Well done.

So we found that the cloth was the most absorbent, or depending on your cotton wool and your cloth, the cotton wool was the most absorbent.

You could have had one of those two materials.

And which material was the least absorbent? And again, it might've been one of two that didn't absorb any water.

Can you say the mm and the mm were the least absorbent? Or if it was one, the mm was the least absorbent.

Your turn.

Well done.

So the plastic didn't absorb any water, the plastic and the foil didn't absorb any water.

So the plastic was the least absorbent, or the foil was the least absorbent, great! Okay, let's move on to today's learning, to the learning of this lesson.

So we're going to be thinking about raw and synthetic materials.

Those are our key words that we need in this lesson.

Now a raw material is a material that comes from nature.

Okay? So it's a natural material.

It has not been changed by humans.

It comes from nature.

A synthetic material is a material where it's been changed by humans, okay? So humans have changed that material.

They are opposites of each other.

You might have heard raw materials being referred to as natural materials.

And you may have heard synthetic materials being referred to as man-made materials.

We are going to use the vocabulary, raw materials and synthetic materials because it's a bit more scientifically accurate, okay.

So a raw material is a material that comes from nature, and has not been changed by humans.

For example, coal, clay, sand.

Those are some examples, let's go back again of some raw materials.

So you've got coal, clay, and sand.

So again, examples of materials that you find, that you would find in the natural world, in nature, okay.

And no change has been made to those materials by human beings.

A synthetic material on the other hand, for example, plastic.

So here you've got a plastic water bottle.

I've got a plastic cup here.

Glass.

So here you can see that there's some ice in the glass, but the container, the glass is made of the material glass, like my water glass here.

Paper, like the paper in this note pad.

So plastic, glass, and paper are some examples of synthetic materials.

And what that means is that these materials have been changed.

There has been a change made by humans to make these materials.

And they are often made from or using raw materials.

So, can you predict before I show you the definition, can you predict the definition of what you think a raw material is? And can you predict what the definition of a synthetic material is? You may have heard me say it once already in this lesson, but before I show you, what do you think the definition for a raw material is based on these pictures? Let me show you again.

So I think a raw material is, tell your screen.

Fantastic.

Hopefully you said something like, I think a raw material is a material that has not been changed by humans.

Or a material that you find in the natural world.

Well done.

What about a synthetic material? Can you predict the definition? You're going to start with I predict, or I think a synthetic material is, tell your screen now.

I think- Great.

Well done! So you should have said something like, I think a synthetic material is a material that has been changed by humans.

Let's check.

Okay, here we go.

So we've got raw materials, a material found in nature or in the natural world that has not been changed by humans.

I'm going to say that one more time.

Maybe you can say it with me.

A raw material is a material found in nature that has not been changed by humans.

Okay.

And synthetic materials, so synthetic materials are material, a material that has been made by humans, okay.

So a synthetic material is a material that has been made by humans.

And the reason I used the word changed before is that that implies that there has been a change made to a raw material to make a synthetic material.

So it's been made or changed by humans.

Where do you think raw materials come from? Can you think of an example of something in nature in the natural world that gives us raw materials? Can you think of any examples? I want you to pause the video now and have a little think and then tell your screen.

I think raw materials come from, pause, think, tell, off you go.

Great.

So you might have said lots of different parts of the natural world, of nature.

So you might have said, I think raw materials come from trees, for example.

And you're right, because when we're thinking about wood, that's a raw material from a tree.

You might've said from animals.

Okay, for example, leather from cows.

Okay, so we are, they're coming from plants or from animals.

So some raw materials come from underground as is shown here.

Okay, some raw materials come from underground.

Some come from living things.

And this is probably what you guessed when I asked the question before this slide.

So for example, some materials, some raw materials come from trees.

So for example, wood from the trunk of trees, or leather from animals skins.

Okay.

So let's have a look at an example of a raw material, which comes from a living thing.

So if you think about plants here, we think about trees.

We think about the trunk of trees, which gives us the raw material.

What's the raw material? Tell your screen.

Wood, well done.

And then using wood, you can make a table.

What else could you make using wood? Tell your screen.

Lots of great ideas.

The chair that I'm sitting on is made of wood.

The table that I'm working at now is made of wood.

Okay? Lots of things are made from wood.

And wood, and tables, and other things that are made of wood are made from wood that comes from living things.

Okay, so we've got our living thing, our raw material, wood, and the object that that is used for.

Let's have a look at another example.

Here we've got an example of an animal.

So raw materials, which come from living things.

Here we've got a sheep.

And a sheep gives you the raw material, wool, which then can be used to make jumpers, okay, or other items of clothing, or rugs, okay.

So again, we've got the living thing, we've got the raw material, and we've got the item or the object that that's then used to make.

Can you think of another raw material which comes from plants or animals? Can you think of another raw material which comes from plants or animals? Hmm, have a little think.

I wonder if you could think of anything.

Here we've got the example of wool.

I wonder if you maybe also thought of leather.

Okay, so not thinking about sheep, but thinking about cows and animal skins.

Okay, let's move on.

So synthetic materials, synthetic materials are often made from raw materials.

Let's have a look at an example.

And can you use your pointy finger as I'm explaining this? So synthetic materials are often made from raw materials.

So let's think about plastic.

Can you tell me something that we, we have already learned of in this unit of learning made from plastic? Some of you said a cup or plastic bottle, et cetera.

So plastic is made from oil and oil is the raw material.

Oil is the? Amazing.

And then can be used for strong objects of any shape.

For example, bottles, dummies or LEGO blocks.

Okay, so to recap, we've got plastic, which is made from oil.

So point to the raw material, oil well done.

And is used for strong objects of any shape.

And then we've got glass.

I didn't know if you knew this, but glass is made from sand.

What's the raw material here? Either point to it or say it.

Sand, the raw material is sand.

You're right.

The synthetic material is glass.

Glass is made from sand, and it's used for strong see-through objects.

Can you think of another synthetic material which is made from a raw material? Can you think of another synthetic material which is made from a raw material? Don't worry if you can't, 'cause we're going to have a look at some in the rest of this lesson.

But have a think, see if you can predict one now.

Pause the video, have a think, tell your screen.

Okay, keep it in your head.

So, what I'd like you to do is I would like you to draw these two circles.

You're going to pause the video, and you're going to draw a circle that has the title raw materials, and another circle that has the title synthetic materials.

Can you pause the video, and can you do that now? Amazing, well done everyone.

Can you sort the following materials into raw or synthetic? So there's lots of materials on your screen now, okay.

Some of these we've already looked at, some of these might have been what you were thinking of when I asked you if you could think of any other synthetic materials made from raw materials.

So we've got wood, say it after me, wood, wool, paper, sand, glass, brick, leather, and plastic.

Okay.

I would like you, in a minute you're going to pause the video, and you can either draw, write, or do both in the correct circle.

So if you think wood is a raw material, you'll draw a little picture of the wood, and write word in the raw materials circle.

If you think it's a synthetic material, you'll draw the wood and write wood in the synthetic materials circle.

Do you understand? Pause the video and complete your sorting activity.

Off you go.

Amazing, well done.

Everybody, you've tried so hard so far in this lesson.

I'm really proud.

Let's correct.

So, the raw materials we had, we had four of each.

So we had wood in the raw materials circle, wool.

So wood coming from trees, wool coming from sheep, sand, and leather coming from animals, okay.

And then in the synthetic materials circle, we had paper, glass, brick, and plastic, because all of those synthetic materials, they come from raw materials, but something has happened to the raw material there has been a change to make the synthetic material.

So they've been made by human beings, okay.

Pause the video now, look carefully, check you've got the correct answers.

If you didn't, you don't need to worry at all.

Mistakes are actually what help our brains to grow, and help us to become even smarter so that we know even more things.

So pause the video now, check, and take or fix your answers.

Off you go, pause now.

Great, well done.

And now it's going to be time after this video ends for your end of lesson quiz to see what you've been able to remember from today's learning all about raw and synthetic materials.

You have tried so hard today.

I'm feeling really, really proud of all of you for putting in so much effort.

And I think it's time for us to do a special cheer for all of our great work today.

Instead of the awesome cheer, we're going to do the rainbow clap, which we've done in a previous lesson.

And it goes like this.

Your turn, one, two, three.

Well done everyone on your excellent efforts, and I will see you next time.