Hello, my name is Mrs. Bishop and I will be your design and technology teacher today.

Thank you for joining me in this lesson.

This is our final lesson in the unit Keep it safe, shell, solid and combination structures.

Throughout the past 10 lessons, we have been designing our own structure and today we are going to evaluate that structure.

In today's lesson, you will need an exercise book or some paper and a pencil.

Today, you should have begun by completing your intro quiz.

If you've not done this, please go and do it now.

Well done for doing it.

Then we are going to look at the product and function of our structures.

After that, we're going to look at user suitability and thinking about how suitable our structures were for the intended user.

Next, we're going to look at the design features of the products.

What made them special and unique? Then we're going to think about what did we like and dislike about our structures.

Finally, today, I would like you to complete your exit quiz.

Now, in today's lesson, there is some keywords.

I will say the word and I would like to repeat it after me.

I'll also read a definition of each word or phrase for you so that you know what it means.

The first phrase is product analysis.

Can you say the phrase product analysis? This means to look closely and carefully at an existing object to find out more about it.

The next word is function.

Can you say the word function? Function refers to the purpose of an object or the way that an object works.

The next word is suitability.

Can you you say the word suitability? This is how well a product is designed for the intended user.

Now we're going to begin by looking at our product and function.

Before we do that, I need you to draw a table like this one.

We've seen these before, haven't we? What I want you to do is draw the table with the different headings in each column.

The first heading says Product, the next one says Function, then it says User suitability, Design features, and then Likes and Dislikes.

Pause the video now to complete this task.

Welcome back.

Now that we have drawn our table, we can begin to fill it in.

Now wonder what product did you design and make? Here's some images of some of the products that you might have designed and made.

So we've got a windmill, a fabric purse, a bridge, a chocolate box, a gift box, a house, a cycling helmet and a treasure box.

Now these are all examples of different types of shell, solid and combination structures.

And our structures should have been a mixture of all of those type of structures too, perhaps they were just one particular type of structure.

Can you shout out to me now what structure you designed and made? Congratulations for making such a fantastic structure.

I am so proud of the work that you have done and I hope that you are too.

But before we begin to evaluate our structure using the table I've just showed you, it's very important that we carry out some tests to see of our structure is fit for the purpose that we were designing and making it for.

Well, now this might be quite tricky because our structure might just be a model or a prototype of what the real thing is.

For example, with my dog shelter, I would really want to test to see is it suitable to be used in the context of the outdoors.

But I made mine as a model or a prototype and it's made from cardboard.

If I put the cardboard outdoors to see if it is waterproof with a little dog inside, it's not going to end well, is it? So I need to think about a way to test the structure to see does the water drain off the shape of the roof and keep the dog dry on the inside.

But I want to use something dry to do that with.

So what I could do, I could perhaps pour sand onto the roof of my dog shelter and see does the sand drain away, and if it does, then I would know that my real life dog shelter would work.

Maybe if I made a model bridge in this unit, maybe I could test to see, can a car travel across it safely.

But, again, I don't want to put a real car on it 'cause it's going to damage it.

So maybe I could think about using a toy car and I can move the toy car across the bridge and see does it travel from one side to the other safely.

So what I want you to do now is I want you to pause the video and I want you to test your structure to see is it fit for the purpose that you designed it for.

Resume the video once you've done that.

Brilliant.

Well, today we're going to evaluate our own structures.

So let's have a look at what we're going to do next.

We're going to complete the product column, and what I want you to do, is in that product column I really want you to draw a very detailed drawing of your structure.

So maybe if you still have your structure at home with you you could look at it and draw it very accurately and detailed.

Pause the video now to do that.

Welcome back.

Well, could you hold up your piece of paper now so I can see your product column? Wonderful, well done for drawing it for me.

The next thing we're going to do is complete our function column.

We need to think very carefully about the structure that you designed and made.

And I want you to think about how your design meets the function of what the product is.

So, for example, when I designed a dog shelter, I would say the roof is at a slope so that all the water from the rain runs down the slope and off away from the dog.

The dog stays dry inside.

If I designed something different, than I would need to think carefully about how does my product really meet the function of what it would need to do.

Pause the video now to complete that task.

Welcome back.

The next thing we're going to look at is user suitability.

We're going to think about how does our product or our structure really meet the needs of the user.

So a while back we had done a design brief and in our design brief we had said what structure we were going to design, make and evaluate.

And in the design brief, we mentioned the user and the purpose.

And this is now the time to evaluate how well does our designs meet the user's purposes? Let's have a look then.

You might have designed some of these possible structures.

But it is really important that we remember to look at the possible users and the possible purposes.

I want you to have a think about it, look back maybe at your design brief from before.

What was your structure? Who was your main user and what was the main purpose? And I really want you to think carefully, does the structure that you've designed and made, does it meet the possible purposes and the possible users? Would those people be happy with it? Would it work within those purposes? And be very critical of it and really think very carefully, is it suitable for the user? So for example, if I had have designed a tent, is my tent the right shape and size for the user? Would it be suitable to use to go and do a camping? Will it not? Have a think about that.

And I want you to pause the video to complete that column.

Welcome back.

Let's look at the next one together.

The next thing you want to think about is the design features of our structure.

What made our structure special and unique? What was important to include when we were making and designing our structure? Maybe what shape and size do we have to make the structure so that it would be right for our user? So I want you to look at all the design features and think about how suitable they were.

And what I want you to do, is I want you to pause the video now and write down about your design features in this column.

Welcome back.

You're doing really well today.

The final thing we are going to do to evaluate our structures, is to think about our likes and dislikes.

And you could actually ask other people in your home what they like and dislike about your structure too.

And this feedback's really good because if we wanted to improve our product then we could use this to help us.

So let's have a look then.

I want you to pause the video to complete the likes and dislikes column.

Welcome back.

Now can you hold up for me your final table with all the different columns filled in? Well done.

If you want to today, you could share your work with Oak National.

You could share a picture of your final structure design or today's table.

So if you want to, you need to ask a parent or carer to share your work on Twitter, tagging @OakNational and #LearnwithOak.

I know I'd love to see your work.

Well done for doing such a great evaluation of your structure today.

I hope that you have enjoyed designing, making and evaluating our structures.

I hope you've learned something new about shell, solid and combination structures, and I've really enjoyed taking you on this journey with me.

I hope to see you again in some lessons soon.

In the meantime, I hope you stay happy and safe, goodbye.