Hi everybody.

I hope that you are well.

My name is Ms. Pantell and I'm so excited and glad that you've decided to join me on this science lesson.

We've got lots of wonderful learning to do today.

So we're going to be learning all about different stretchy materials and testing them and then looking at some of the results.

Have you got your thinking cap on? 'Cause you've got lots of learning to do today.

Let's get started.

So the outcome for our lesson today is I can investigate which materials are stretchy and explain how suitable they are for different uses.

So we're going to talk through some key words now that we are going to use in our lesson.

So we're going to practise saying them.

So I'm going to say the word and I would like you to repeat it back to me.

My turn, material.

Your turn.

Super well done.

My turn, property.

Your turn.

Superstar, well done.

My turn, suitable.

Your turn.

Fantastic work everyone.

My turn, stretchy.

Your turn.

Well done.

My turn, length.

Your turn.

Wow everybody, I'm so impressed with the practising of the key words.

Now we'll be seeing these words throughout our lesson so it's really important that we've practised saying them.

So our lesson today is split up into three sections and the first part of our lesson is going to be learning all about stretchy materials.

Are you ready? So Jacob here says, "My pencil case is made out of a fabric called canvas.

Canvas is a suitable fabric to make a pencil case because it is strong to hold all my pencils and tough so it'll not tear when it is in my bag." Do you have a pencil case like Jacobs or is your pencil case a little bit different? So my next question to you is what do we call the words that we use to describe materials? Can you tell me? Well done everybody.

So the words that we use to describe materials are called its properties.

So let's look at this metal spoon here.

What are the properties of this metal that make it suitable to make a spoon? So have a little think with your talk partner.

What are the properties of this metal that make it suitable to make a spoon? So think about what you use a spoon for.

Think about the different ways you could use it.

Think about how you use it in your everyday life.

Have a think with your talk partner.

Super job everyone.

Well done.

Well done for having a great go at that discussion and thinking about the properties of that metal.

Now I would like you to have a think about a wooden cricket bat.

So what are the properties of this wood that make it suitable to make a cricket bat? Have a think with your talk partner and then share your answers as a class.

Excellent, well done everybody.

You had a great discussion there.

So obviously the wooden cricket bat needs to be very tough and very durable because it's obviously being used to hit the ball.

Well done everybody for your discussion.

So let's move on.

The children are talking about which materials are suitable to make an umbrella.

Laura says, "You can make an umbrella out of any material." And Andeep says, "You need to make an umbrella out of a material that has suitable properties like being flexible and waterproof." Who do you agree with? So pause the video here and have a little think.

Do you agree with Laura or do you agree with Andeep? Have a little think in your head on your own and then I want you to share what you think with your partner.

Off you go.

Super work everyone, well done.

Andeep is correct.

So Andeep has said that to make an umbrella out of materials that have suitable properties, for example, like being flexible and waterproof.

If an umbrella wasn't waterproof, it wouldn't be very good at doing its job.

Well done everybody.

So let's move on.

Do you know what these objects are? And what do you notice about the materials these objects are made from? Gonna give you a little clue here.

What would happen if you pulled these materials? So pause the video here.

If you need to, come up a little bit closer.

What do you think these objects are and what do you notice about the materials these objects are made from? Have a little think.

Excellent work, everyone.

Well done.

So the first one here is a pair of tights, and we've got rubber bands, and then we've got a balloon.

So does anyone notice anything similar between all these three things? Well done.

So these materials are all stretchy.

This means that they can be pulled to change their shape.

So we've got hair scrunchies.

So I've got my hair scrunchie here and we can see that I can stretch it quite a lot.

We've got ukulele strings and we've got a woolly hat and I've got my favourite woolly hat here that I wear in the winter and we can see that I stretch it, so the materials are stretchy.

Well done everyone.

Why do you think this is a useful property? So we know that these materials are stretchy, but why is this useful? Have a think with your talk partner and then continue with the lesson.

Fantastic work everybody.

Well done.

So let's move on to a quick check of our learning.

Which of these is a property of materials? A, plastic, B, stretchy, or C, a balloon? And what do you think? Super work everyone well done.

The answer is B, stretchy and we've just spoken a little bit about stretchy materials.

So let's move on.

If a material is stretchy, it can be pulled to change its shape.

Stretching a rubber band or stretching an exercise band, and I showed you my hair band for example, I can stretch it in lots of different ways.

Let's do another quick check of our learning.

Sam says, "All stretching materials are soak up water." And Jun says, "All stretching materials can be pulled to change their shape." And Lucas says, "All stretching materials let light through." Who do you agree with? Think about the learning we've done in our lesson so far.

Who do you agree with? Have a little think.

Superstar, well done.

So Jun is actually correct.

So we know that all stretchy materials can be pulled to change their shape.

Well done everyone.

So some materials are stretchy and this makes them suitable for certain uses.

So we've got hair scrunchie, rubber bands and tights.

So why is being stretchy useful for these objects? Have a little think on your own and then I want you to share your ideas with your partner.

So for these objects here, why is it important for them to be stretchy? Have a little think.

Fantastic work everybody, well done.

So materials such as rubber and lycra are stretchy.

These are often used for clothes where you would need to move your body around a lot.

For example, swimming, cycling, or even doing some yoga.

Let's do another check of our learning.

Aisha says, "A balloon needs to be made from a stretchy material." Izzy says, "A table needs to be made from a stretchy material." And Alex says, "A book needs to be made from a stretchy material." Who do you agree with? Think back to the learning we've done in today's lesson.

Who do you agree with? Have a little think.

Fantastic work everybody, well done.

So we know that Aisha is correct.

So a balloon needs to be made from a stretchy material.

Fantastic work everyone.

So we're going to move on to the first task for today's lesson.

So I would like you to go on a stretchy materials hunt around your classroom or home.

Which objects can you find that are made of stretchy materials? And why do these objects need to be made with a stretchy material? So pause the video here and go on your stretchy materials hunt.

I hope you have a great time and I can't wait to hear about all the things that you found.

Off you go.

Fantastic work everybody well done for having a fantastic go on your stretchy materials hunt and I'm hope that you found some really fantastic things.

So you may have found an eye mask, a woolly hat, a neck warmer, a rubber glove, or a pair of tights.

Sophia says, "These objects are stretchy because they change shape when they are pulled." Did you find similar objects or some different ones? Well done for having a good go everybody.

So we've completed the first part of the lesson where we've learned about stretchy materials.

So we're now going to move on to testing stretchy materials.

So Izzy's nanna has had a foot operation.

She has to wear a plaster cast but has cold toes.

She wants to wear a sock to keep her toes warm, but all of her socks are too small.

Aisha has said, "Izzy's nanna needs a sock made from a stretchy fabric." Sam says, "We will find a suitable material for it!" Are you up for the challenge? Let's go.

So Aisha and Sam think of different ways they could test each material to find out if it is stretchy.

So Aisha says, "We could get square pieces of each material and put marbles into the middle.

We can hold the corners to see if it stretches." And Sam says, "We could try to pull each material and measure with a ruler how far it stretches." Do you have any other ideas for how to test which materials are stretchy? So pause the video here, have a think with your talk partner or in small groups.

Do you have another idea of how Aisha and Sam could test different materials? Have a little think.

Super work everyone, well done.

I know you tried really hard at that discussion there.

Fantastic ideas everyone.

So Aisha and Sam start to plan their investigation.

They collect the things that they need.

An adult cuts all of the fabrics into 20 centimetre lengths.

So here are the different materials.

So we've got denim, cotton, wool, fleece, jersey and linen.

We've also got a ruler here that they're going to be using.

Aisha and Sam work together to test each material.

They line up each fabric next to the ruler and try to stretch as far as they can and then measure the length of the fabric.

So here we've got a picture of measuring the denim, measuring the cotton, and measuring the wool.

Aisha and Sam have found a selection of fabric materials to test.

When scientists test materials, they can record which ones they test in a table.

So a table that can be used to record whether materials are stretchy.

So for example, you could have a column that says type of fabric and then length of material while being stretched, and is it stretchy? So often when you're completing an investigation in order to record your results, having a table like this is really useful.

Maybe you've completed a table like this in one of your other lessons.

Let's do a quick check of our learning.

True or false, when scientists test materials to see if they are stretchy, they record the results in a table.

Do we think that's true or false? Have a little think.

Super work everybody.

The answer is true.

Well done.

I think this because A, a table is an easy way to see and compare your results.

Or B, I think this because a table is an easy way to see what things you will need.

So why do we think this statement is true? Have a little think.

Fantastic work everybody, well done.

So we know this because a table is an easy way to see and compare your results.

So let's move on to the next task for today's lesson.

So Izzy says, she's asking a little bit of help, she's saying, "Help me decide which fabric is stretchy enough to make my nanna's socks." What will you need? So we've got different fabrics here, fleece, jersey, linen, denim and cotton, and a ruler.

So what I'd like you to do is pull each material to find out the length of it while being pulled.

Record your answers in the table and decide if each fabric is stretchy.

So pause the video here and you may need and ask an adult to help you to collect the different types of fabrics.

And then I would like you to measure how much they can be pulled and then tell me if you think it's stretchy or not.

Pause the video here, have a go at this investigation and I can't wait to hear about your results.

Off you go.

Super work everybody.

Well done.

I know it was a little bit tricky to pull some of these fabrics, but I know that you've had such a fantastic go, which is really, really great.

So a big well done to everybody.

"So did your results look like mine?" Like Izzy has said.

So for cotton the length was 20 centimetres.

For denim it was 20 centimetres.

For fleece it was 25 centimetres.

For Jersey it was 30 centimetres.

And for linen it was 20 centimetres.

So for the cotton, Izzy said, "No, it is not stretchy." For the denim, she said, "No, it is not stretchy." The fleece, she has said, "Yes, it is stretchy." The jersey, she has said, "Yes, it is stretchy." And the linen, she has said, "No, it is not stretchy." Were your results similar or a little bit different to Izzy's? But well done for having a great go at this investigation.

I'm so impressed with your work so far today everybody.

So we are going to move on to the third part of our lesson.

So we've learned about stretchy materials and we've tested some stretchy materials and now we're going to have a think about the results.

So Aisha and Sam want to make a bar chart to show how stretchy the different materials are.

And maybe you've seen a bar chart in some of your other lessons before.

We could use the bars to show how long each piece of fabric was when it was being stretched.

Aisha and Sam test again.

They stretch each fabric next to a piece of sugar paper.

They mark the length of each stretched fabric on the sugar paper, label it with the fabric name and cut the sugar paper to that length.

So you'll need scissors and a ruler here.

So here's an example.

So we've got the jersey, they've got the sugar paper and they've actually got the fabric.

And then we've got the sugar paper with the word cotton written on it and then we've got the cotton underneath.

Aisha and Sam use the pieces of sugar paper to make a bar chart to compare the lengths of different materials.

So we can see on the X axis here, we've got the type of fabric material.

So we've got denim, jersey, cotton, fleece and linen.

And on the Y axis we've got the length.

So we've got going all the way up to 30 centimetres.

Sam says, "Which material is stretchy enough to make my nanna's socks?" Which material do you think? Super work everyone, well done.

We can see that jersey stretched the most at 30 centimetres.

Well done everybody.

So let's do a quick check of our learning.

Which of these shows a bar chart, A, B, or C? Have a little think.

Super work everyone, well done.

The answer is C.

So let's move on to the next task for the lesson.

So Izzy says, "Make a bar chart to show how long your materials were when they were stretched." So we've got the outline of a bar chart here and so very similar to what Izzy and her partner did earlier in the lesson, I would like you to do the same.

Pause the video here, have a go at the task and click play when you're ready to continue.

Super work everyone.

Well done.

As I said, I know it was a little bit tricky to stretch those fabrics.

We did such a great job.

So does your bar chart look like mine? Which fabric materials stretch the most? So this is what Izzy's results showed.

Were yours similar or were yours a little bit different? Izzy says, "Jersey stretched the most.

This will be a suitable material for my nanna's socks." So did your results show the same thing? So for Izzy's results, the Jersey material would be the best material for her nanna's socks.

But did your results show the same thing or did they show something a little bit different? Well done for having a great go at this task.

I know it was a little bit tricky to work with the different materials, but you ordered such a fantastic job.

Well done.

So we've come towards the end of today's lesson.

So let's do a summary of our learning.

So we've learned that the properties of materials make them suitable or unsuitable for particular uses.

If a material is stretchy, it is able to change its shape when pulled.

So if we have a look at my hair band again, we know that we can stretch in lots of different ways.

Some materials are more stretchy than others and this makes them suitable for certain uses.

And scientists test materials to find out which are stretchy and which are not.

So we've done lots of learning today, all about stretchy materials and you've all done such a fantastic job at completing the tasks.

Well done for all of your work and well done for understanding and showing lots of examples of stretchy materials.

I hope you have a great rest of the day everybody.

Thank you for joining me on this science lesson and I'm sure I'll see you very soon in the next lesson.

Bye-Bye.