Hello everybody, it is great to see you and welcome you to today's lesson.

My name is Ms. Larham and I'm going to be your Design and Technology teacher for today.

I hope you're really looking forward to today's lesson and you have a great time taking part.

So this is lesson four of our design and technology journey.

A journey all about mechanisms. Where have learned lots about sliders and levers, and today we're going to explore a range of materials to help make design decisions.

So let's have a look at what equipment you will need for today's lesson.

In this lesson, you will need some paper and some cards.

So would you be able to find me paper and card today? And then you will need a pen or a pencil for your recording.

So if you need to pause the video now and go and collect everything you need, now's the time to do it.

Off you go.

Join us when you're ready.

Fantastic, well done for collecting your paper and your card and your pen or your pencil.

Let's have a look at what our learning is going to look like today.

First, we're going to start with our start of lesson quiz and we're going to do that all together.

Then it's time for our Star Words.

And then we're going to recap from last lesson the properties of materials.

And then we're going to have a go at a practical activity.

And we're going to finish with our end of lesson quiz that we're going to do all together.

So let's get started.

So let's begin with our start of the lesson quiz.

I'm going to show you an object from around my home and you're going to tell me what material it is made from.

Are you ready? Excellent.

Me too.

This is my object from around my home and I found it in my kitchen.

Can you tell me what material is this made from? Ready? After three.

You're going to shout out what material this is.

One, two, three.

Excellent.

You're right.

It is made from wood.

It is a wooden spoon.

Great start to our quiz.

Are you ready for the next question? Excellent.

I'm going to show you a mechanism that I made a couple of lessons ago, and you're going to tell me is it a slider or is it a lever? Are you ready? Is this a slider or a lever? Tell me after three.

One, two, three.

Fantastic.

You're right.

It is a lever.

It has a pivot in the middle and it is moving in a curved motion.

That's amazing knowledge.

What a great start our lesson, well done! Now it is time for our Star Words.

Let's make sure our voices are ready for our Star Words, I'm going to say Star Words in my loud voice.

And then you're going to copy.

Star Words, Star Words.

It's your turn.

That was nice and loud.

I can hear that you are ready.

Our first Star Word today is material.

Your turn.

Material.

Excellent.

We've looked at materials before and I bet you can name lots of different materials.

Our next Star Words is properties.

Your turn.

Properties.

Excellent.

We know lots about properties.

We looked at those last lesson.

Our next one is choices.

Your turn.

Choices.

Excellent.

Well done.

Choices just means which one are we going to choose.

Next Star Word, suitable.

Your turn.

Suitable.

Excellent.

Suitable just means which one are we going to choose that is the best for the job.

So which one is suitable for the task.

Well done for joining in everybody.

Now, what we're going to do is just remind ourselves of the properties of materials, because this knowledge will help us later on.

Are you ready? Okay.

So to remind ourselves of our properties of materials, I'm going to do the action and you're going to shout out the word.

Are you ready? Excellent.

So my first action is.

Can you remember what that was? Can you shout it out? Brilliant.

Bend, do it with me.

Bend.

Excellent.

My next keyword, I'm going to do the action.

Can you remember this property? Shout out.

Super.

Twist, do it with me.

Excellent.

Our next key word is, you remember this one? Shout out.

Brilliant.

Squash.

Do it with me.

Squash.

Excellent.

And our next key word is, ready? What am I doing? Shout out.

That's right.

I am stretching, stretch.

Can you do it with me? Stretch.

Fantastic.

So we have bend, twist, squash and stretch as our properties.

Now, do you remember we extended our knowledge and we joined these together to create a new property.

Let's quickly go through those just to remind ourselves.

So when I can bend and twist something, it was called flexible.

Can you do the action for flexible? Flexible.

Excellent.

But when we cannot bend it and we cannot twist it, it was called, you remember? Rigid.

Well done.

Show me rigid.

So we can't bend it and we can't twist it.

Well done.

Our next one was squash and stretch.

If we can squash something and we can stretch something it's called squashy.

Squashy with me.

Excellent.

If we cannot squash it and we cannot stretch it, do you remember what it was called? Stiff.

Well remembered! Stiff, do it with me.

Stiff.

Excellent.

Let's have a look on our next word that you can remember it.

So when we stretch something and we let go and it pings back, it's got a special name, do you remember it? Elastic, well done.

Can you do it with me? Elastic.

So, we have flexible, rigid, squashy, stiff and elastic.

Good remembering everybody.

Okay.

So now I've got superstar challenge question for you.

Do you remember last week when I looked at my metal, I chose my metal spoon and I found out that I couldn't bend, couldn't twist it, couldn't squash it or I couldn't stretch it.

So it was rigid and stiff and it wasn't elastic.

I've got a question.

Are you ready? Can metal be stretchy, squashy, elastic or flexible? So, is there a metal out there that can be stretchy, squashy, elastic or flexible? Can you take a moment think what your answer is to that question? Can a metal be stretchy, squashy, elastic or flexible? What do you think? Well done for taking some time to think.

Let's have a look and investigate this question all together.

I have found some objects from around my home.

I found some tinfoil, a paperclip, a coin, and a spring.

My first question to you is, can you tell me what material are all of these objects made from? What material are they? Can you tell me now? Excellent.

They are all made from metal.

Now I know it looks like my paper clip is made from plastic but underneath this plastic coating is some metal.

Now let's have a look at the properties of these materials so we can help answer our question.

I'm going to start with the coin.

And what do we know about the coin? Can we bend it? No.

See if you can join in.

Can we twist it? No.

Can we squash it? No.

Can we stretch it? No, this is rigid and stiff like my metal spoon.

We can't do any movement with it at all.

But now if I use my spring, which is also made of metal, let's see what properties can we do.

Can we bend it? Say yes or no when I show you.

Yes.

Can we twist it? I can a little bit.

Can I squash it? Yes, I can definitely squash it.

Can I stretch it? I can.

And if I let go, does it ping back? It certainly does.

But hold on a minute.

This is made from metal and this is made from metal, but they have completely different properties.

I can't do anything with this one.

I can squash and stretch and bend this metal.

How interesting.

Let's have a look at my next one.

Let's have a look at my paper clip.

Let's try out some properties.

Join in with me with your yes or no.

Can I bend it? Yes, I can definitely bend it.

Can I twist it? Yes, I can twist it a little bit.

Can I squash it? Can I push it together? Yes, I can squash it.

I can push it together.

Can I stretch it? No, but this is also made from metal and it has different properties to these.

I think we're starting to answer our question.

Let's have a look at the tinfoil.

Here we go.

Let's see if we can do our properties.

Is it bendy? Can we bend it? Yes.

Can we twist it? Yes, so that means it's flexible.

Can I squash it? Oh, yes, I can definitely squash it.

Can I stretch it? No, if I let go.

No, we can't stretch it.

So all of these objects from around my home, they are all made from metal, but they all have different properties.

So let's have a think to the answer to our question.

Can a metal be stretchy and squashy and flexible and elastic? You're right, it can.

The spring has shown us this, the paperclip and the tinfoil has shown that metal can have different properties.

Well done everybody for joining in.

Now we have found the answer to our question.

What does this tell us about how we can use metal? For example, if I had just cooked my roast chicken on a Sunday, which type of metal would I use to cover it over to keep it warm? Would I choose a metal like my coin that's rigid and stiff? Or would I choose some metal that we could squash and bend and twist? Which one would be suitable for covering over my roast chicken? Can you tell me now? The coin material or the tinfoil material? Point to which one you think.

Excellent.

The tinfoil material is more suitable for the job because this doesn't bend and twist.

We can't use this at all.

It does not move.

If I want to cover something over, I need a material that I can manoeuvre around and put over the top of my chicken.

So you can see the metal have different properties which means we can use them for different things.

Now we're going to use our knowledge about choosing suitable materials for certain jobs to help me to do a task.

I'm going to show you some pictures and you're going to see if you can work out which material would be suitable for the job, which one would be best for the job.

Let me show you the pictures.

A park bench, tying up a ponytail, a cookie cutter and scooter tyres.

I want you to think, knowing the properties of materials, which material would be best for the job.

So I'd like you to pause the video now.

Make a decision for each photo and then press play, when you are ready.

Off you go.

Excellent.

Welcome back.

I hope you've decided on a suitable material for all of these objects.

Now I'm wondering if you thought carefully about the properties.

So with a park bench, do I want a material that can bend and squash really easily? So I sit down on a park bench on a material that bends really easily and squashes really easily.

I think I'd end up on the floor, wouldn't I? What about your scooter tyres? Do you want to be able to use a scooter on wheels that squash and stretch and bend? I don't think that would be very successful, would it? So, did you choose materials that are suitable for each of these jobs? Excellent.

I knew you'd do a good job at that, well done.

Now we're going to put that learning that you just did into a sentence for me.

So I made a sentence, I left some gaps for you to fill in.

So let's read it together.

I think, you're going to write a material in there, is suitable for a, write your object in there, because it is hmmm and hmmm.

In there you're going to write some properties of materials.

I'll read it one more time and then you're going to press pause.

I think hmmm is suitable for a hmmm because it is hmmm and hmmm.

There's some key words at the bottom of your screen to help you.

So press pause, write out your sentence and press play, when you are ready off you go.

Fantastic.

Welcome back.

And well done for writing your sentence.

I'm going to read you my sentence and then you can read me yours.

I wrote, I think wood is suitable for a park bench because it is rigid and stiff.

Can you read me your sentence please? Excellent sentence.

You have chosen a suitable material depending on its properties.

Well done.

Okay.

Before we get started, though, we need to think about the criteria that a congratulations cards need.

I've got a couple here.

Here's a card that says, you are the best.

So I would say thank you to somebody for doing something for me.

I've got a card here that you would say with love, so if you were sending special thoughts to somebody.

And I've also got a birthday card as well.

But what do all these cards need to do to be successful? Let's have a look.

So our criteria is, does it fold? So remember, a card folds in half.

It has the picture on the front.

So you're able to write on the inside.

So one of our criteria is, does it fold? The next one says, does it stand up by itself? So when you've received cards before, I don't know if you're like me, but I like to put them up around my house to display them for a couple of days.

So our next criteria is, does it stand up by itself? Does it fold? And does it stand up by itself? That's what we're going to be finding out, okay? You can find your recording sheet, if you open up the worksheet and print it off.

So we're going to investigate now which material would be suitable for a congratulations card.

And you're going to go around your house and find some different materials.

So I'm going to get you started and then you can finish it off.

So I found some card around my house, so, under material, I'm going to write card.

And then I'm going to go through my questions.

So the first question says, does it bend? Let's see.

Yes, it does bend.

It does fold.

So I'm going to give it a tick.

The next one says, does it stand up by itself? Let's see.

It does.

It does stand up by itself.

I'm going to tick this one.

Now remember a card needs to be able to fold and stand up by itself.

So would I use this for a congratulations card? Yes, I would.

Now around my house, I have found another material.

I have found some fabric.

This is a tea towel from my kitchen.

So material I'm going to write fabric.

Let's go through my questions.

Does it bend? If it bends, we need to check this, so it folds.

So does it bend? Yes, it does bend.

Does it stand up by itself? Let's check.

Hmm, hmm, no, it just falls straight back down.

So no, it does not stand up by itself.

So let's check.

Would we use this for a card? Doesn't stand up by itself.

So no, I would not use that for my card.

So I'd like you to do now is you're going to pause the video and you're going to fill in at least four materials.

Check it.

Does it bend because we need it to bend so it can fold in half? And does it stand up by itself? Then decide if you would use that for a card.

Okay.

So pause the video, fill in your table and press play, when you have finished.

Off you go.

Welcome back everybody.

And thank you for completing your task.

I wonder if you've found a material that you thought would be suitable for a congratulations card.

So can you take a moment to look down on the table that you've created for me and choose a material that could fold and that could stand up and you thought, yes, this would be great for a congratulations card.

So take a moment to find one for me.

Excellent.

Now tell me your material choice.

Brilliant, that does sound like a very suitable choice.

I think I have chosen card as a suitable choice for my congratulations card because I could fold it in half and it would stand up by itself.

You might have found that as well.

We're going to evaluate now what we found out.

We're going to fill in a sentence.

Are you ready? Super.

What did you find out? I think, want to write your material in there, is suitable for a congratulations card because it is hmmm and hmmm.

So in there you might write some properties of materials or some of the criteria that you know for a congratulations card.

So I'd like you to pause the video and I would like you to write out your sentence and then we'll be able to share them all together.

Okay.

So pause the video now, press play when you're ready.

Brilliant.

Thank you for writing down your evaluation sentence.

I'm going to read mine for you and then you can read me yours.

So I wrote, I think card is suitable for a congratulations card because it can bend and it can stand up by itself.

Can you read me your sentence? Off you go.

Excellent reason and excellent sentence.

Well done for sharing.

I think we have all been successful in finding a suitable material for a congratulations card.

And we will need that knowledge for our next lesson.

So don't let it fall out of your brain.

We have come to the end of our lesson, but before you go, let's do our end of lesson quiz all together because it's really important that all of our new knowledge today is locked inside of our brains.

So are you ready for the first question? Super, me too.

Earlier today I showed you a metal spring.

I was wondering if you could remember any of the properties of this spring that you'd be able to tell me? What can it do? What are its properties? Have a think.

Excellent.

Can you tell me one of the properties that this metal spring can do, tell me now.

Excellent.

I bet you knew more than one, so we can bend it, we can twist it, we can squash it, we can stretch it and it is even elastic, so I can let go.

So, it is flexible, squashy and elastic.

Well done if you knew any of those properties, that's amazing.

My last question is, do you remember I was talking about my roast chicken before? And covering it over to keep it warm.

I want you to tell me which type of metal would be best for this job.

Would it be the material of this type of metal or would this type of metal be more suitable? Can you point to your screen? Which one is more suitable for covering over my roast chicken? Point now.

Excellent.

Did you point to this one? I thought you might have.

Well done.

Do you remember, we need a metal that we can bend and squash and twist to be able to cover it over successfully.

If I chose the material that I can't move at all, all it would do is just sit on top like this.

We wouldn't be able to cover it over successfully.

Well done for our end of lesson quiz.

You have done some amazing thinking and remembering today and I can't wait to see you next lesson.

I'll see you then.

Bye.