Hello, my name is Mrs. Bishop, and I will be your Design Technology teacher for today.

Welcome to Lesson 7 of 10 in our unit, Keep it Safe, Shell, Solid, and Combination Structures.

Today, we are going to be experimenting with making techniques.

I hope you're in a nice calm and quiet place so that you are ready to begin.

In today's lesson, you will need a pencil.

Make sure that it's sharp so that you can draw accurately today.

You will also need a ruler to measure things in millimetres and in centimetres.

You will need some card, this could be recycled card.

You will also need some scissors and these must be used under the supervision of a parent or a carer.

And you will also need some tape.

You could use sticky tape or masking tape.

If you do not have those resources can you go and gather them now? Today, you have begun by completing your intro quiz.

Well done.

If you have not done your intro quiz please exit this lesson now and go and do it.

And you can join us once you have had a go at the intro quiz.

Firstly today, we are going to look at the method of corrugating and laminating cardboard.

Then, we are going to look at the inserting tabs, flanges, and slots into cardboard, and when these might be useful when we come to make our structures.

We will also be looking at creasing and bending cardboard using formers and how this might be useful when we've come to make our structures.

And finally today, I would like you to complete your exit quiz, so you can show me how much you have learned in this lesson.

Let's look at some keywords together.

These will be important in this lesson, so I would like you to repeat them after me.

And I will also read a definition for you.

First keyword is corrugated.

Can you say the word corrugated? Corrugated is a material shaped into a series of ridges to give extra strength.

Next word is laminated.

Can you say the word laminated? This is to overlay card with a layer of plastic or just stick together layers of card.

Both corrugating and laminating card can make it stronger.

Wonder what's one is the best? Next word is a tab.

Can you say the word a tab? A tab is a small flap attached to a structure.

It is used to hold or fasten another part, and we might use them in today's lesson.

The next word is flange.

Can you say flange? A flange is a protecting flat rim or collar on an object that helps strengthen another attached part, and again, we're going to be investigating flanges today.

Finally, we have a slot.

It is a slit in a structure where something can be inserted or joined together.

Now, let's begin by trying to match materials with the structure.

I want you to pause the video and give it a go.

Welcome back.

Well, how did you get on? Let's have a look at the answers together.

A cardboard box is of course made from cardboard.

The lunchbox that we can see here is made from plastic.

Is there any other materials that lunchboxes could be made from? That's right.

They could be made from metal or even from fabric.

This part of the climbing rail is made from plastic.

The climbing frame, is it made from any other materials? Yes, that's right.

They could sometimes be made from wood.

And finally the popcorn bucket, it is made form cardboard.

We choose some materials depending on the type of structure we're making and what purpose it has and what the user wants the structure to do.

What about these structures? Can you match the material to the structure? Pause the video now to complete your task.

Welcome back.

Now we see that this part of the tent is made for fabric.

And this part is made from wood.

Now let's loot at the the treehouse.

This part as the treehouse is made from word.

Why do we think those structures might have been made from those materials? That's right.

Those materials meet the purpose of the structure best.

Let's think about what we've learned before.

We've learned about all the different types of structures that we might use.

We've created a really detailed sketch of the structure that we want to make.

And we began to make our structure last time using different making techniques.

Today we are going to continue to make our structure.

Let's begin by looking at how corrugate and laminate some cardboard.

This is corrugated cardboard.

What do you notice about it? That's right.

You can see that is a zigzag of cardboard folded up and stuck between two other layers of cardboard.

This makes it really strong and stiff in one direction.

And it makes it really useful to use in packaging where it can keep objects safe inside.

Do you think corrugating card makes it stronger? That is true.

It becomes much stronger and stiffer when the corrugate the cardboard.

This is laminated card.

Laminated card is where we stick together layers of card or we coat or cover the card and another material.

For example, in the juice carton it is cardboard coated with plastic.

Why do you think they do that? That's right.

They do that so that becomes water proof, so that the juice does not make the cardboard soggy and doesn't leak out.

Laminating card makes it stiffer? Do you think this is true or false? That's right.

It is true.

By laminating the card it becomes much stronger and stiffer.

However, it can also make a structure heavier and it's very costly 'cause we're using a lot of material.

That's why sometimes corrugating is used instead because we use less material and it is much lighter.

I want you to pause the video to complete your first task today.

I want you to have a go at making some of your own corrugated and laminated cardboard.

Think where this might be useful in the structure that you are designing and making.

Welcome back.

I hope you enjoyed your first task.

Now we're going to look at inserting tabs, flanges and slots into cardboard structures.

This is an example of a tab.

Can you see that the tab has been cut from the piece of cardboard and is folded back on itself.

And we can use these tabs to help us stick together different parts of our structure.

Let me show you.

Can you see here, I've cut the tabs and folded them at different angels and the I have used that to stick together another part of my structure.

So they're used to join structures together.

Adding tabs into cars makes it's stiffer.

Is this true or false? This is false.

Tabs are actually just useful for attaching other parts to our structure.

Now we will look at flanges.

This is an example of a flange.

Can you see that I have cut lots of little lines along the base of my structure and then I have folded them out.

These are useful to stick pieces of the structure together.

Flange can only be used in cardboard structures.

Do you think that is true or false? This is false.

Flanges are often used in other structures made from a great range of materials.

The next way we have is a slot.

Can you see that this is a slot? This is where we cut a slot or a small section of the cardboard.

And then we put them together again.

This is a useful way to join materials.

Slots can be used for windows.

Do you think this is true or false? This is false.

Slots are used to join together two pieces of card.

I want you to pause the video to complete your next task.

I want you to have a go at inserting some tabs, flanges and slots into some cardboard once you experiment today and think about where this might be useful in the structure that you are designing.

Welcome back.

I hope that you've had a really good time investigating those types of joining methods.

Now we are going to look at creasing and bending and how this can be used in the structures that we're designing.

Here I have creased and bent the card.

Can you see that I've used a former for the first one? I have used the glue stick to create a cylinder and I have formed the core card around the glue stick to create my cylinder which I might use in my structure designs.

And for the second one, I have creased the card around the side of table leg to make this shape, which is a strong shape that could be used in my structure.

Now, of course you might be using other materials.

We might use fabric or wood or plastic in our structure.

And for those materials there are different types of methods that we can use.

The next thing I want you to do is have a go at creasing and bending some cardboard.

And think about other materials that you might use in your structure and you need to practise how you might join and cut these today, using some of the methods that we have learned.

Thank you for joining me in today's lesson.

Have you enjoyed experimenting with different making techniques? I hope you have.

I know I have done.

And we've learned today that we can use methods to make our cardboard models stronger and stiffer.

We you also have learned ways to join together different parts of our structures.

This will come in really useful whenever we get together again, next time.

'Cause next time we're going to focus on making our structures nice.

Now I remember they might be prototypes but we still want to make them suitable for use.

So I hope to see you again soon.

However, if you do want to share the work that you've done today you can ask a parent or carer to share it on Twitter just by tagging @OakNational or #LearnwithOak.

See you soon, goodbye.