Hi, everyone, I'm Mrs. Kutz, and I'm very excited to join you for today's lesson on "Design specification for wheeled vehicles." This is part of the "Wheels and Axles Vehicles" unit.

Our lesson outcome for today is I can explore a vehicle and create a design specification for a vehicle.

We have five keywords for today's lesson.

I'll say them first and then you repeat them after me.

Are you ready? Super.

Axle.

Axle.

An axle is a rod that holds a wheel in place and allows it to turn.

Chassis.

Chassis.

A chassis is the framework of a vehicle that supports the body and engine.

Engine.

Engine.

An engine is a machine that helps the vehicle to move.

Axle holder.

Axle holder.

An axle holder is the part where the axle goes through to hold it in place, but it still allows the wheel and the axle to rotate.

And design specification.

Design specification.

A design specification describes what a product has to do.

We have two parts to our lesson today and our first learning cycle is exploring and identifying the key parts of a vehicle.

How did you travel to school? Now, some of you may have walked, but did any of you travel on a bike, a bus, in a car, or on a train? Well, if you did, these are all vehicles, and a vehicle is a machine with wheels used for transporting people or goods.

That means taking them from one place to another.

Most vehicles have the same key parts.

Lucas says, "Do you recognise any of these words?" Chassis, wheel, axle, electric motor or engine, and axle holder.

Do you recognise any of these? That's right.

They are the keywords for today's lesson.

When we explore a toy car, we can have a closer look at the parts and how it is put together.

A vehicle needs wheels to move.

Can you spot the wheels in the picture? That's right.

Well done.

The wheels rotate in a rotary motion.

This means a circular movement.

And this helps the vehicle to roll.

Can you see it roll forwards and backwards? Well done.

Well, Luca says, "Wheels are round and can be made from lots of different materials." Every vehicle is built on a chassis.

If you turn a toy car over, you can see the chassis.

Here is a diagram of the underneath of a vehicle and it's labelled with the chassis.

Lucas says, "A chassis is the framework of a vehicle that supports the body and engine." Well done, Lucas.

The axle is a rod that holds the wheel in place and allows it to turn, and quite a lot of vehicles have axles.

Can you spot the axle? Brilliant.

It is the rod between the two wheels.

Well done.

Luca say, "The axle might hold one or two wheels, and the axle can turn with the wheels." We're ready for our first check for understanding.

Are you sitting comfortably? Brilliant.

Which arrow is pointing to the axle? Have a look at the pictures and which arrow is pointing to the axle? Pause video and have a little think.

Welcome back.

So which arrow is pointing to the axle? It's B.

Well done.

The axle is the rod that's between the two wheels.

Many vehicles have an engine that powers the vehicle by turning its wheels.

The engine is usually under the bonnet and controls if the vehicle goes fast or slow.

Can you see the picture of the engine? Lucas says, "Electric vehicles are powered by an electric motor.

And my chair has an electric motor that turns the wheels and makes my chair move." An axle holder is part where the axle goes through to hold the axle in place.

Here is a diagram of the underneath of a vehicle, and here are the four axle holders.

Lucas says, "The axle holder attaches the axle to the chassis, but still allows the axle to rotate." The chassis, engines, axles, wheels, and axle holders work together to allow the vehicle to move.

But unfortunately, if one part is broken, the vehicle will not run smoothly.

Izzy asked, "Do bikes and wheelchairs have axles, wheels, engines or motors, and a chassis?" What do you think? That's right, bikes and wheelchairs do have a chassis and they also have wheels and they also have axles.

Some have motors.

An electric bike has a motor.

Here is the motor and here's the chassis label, the wheels, the axles, and the axle holder.

Spend a minute just having a little look at this picture.

An electric wheelchair has a motor and works in a similar way to an electric bike.

We're ready for our first task now, Task A.

I would like you to explore a range of vehicles with your friends.

Can you spot the axles and wheels and how do these parts help the vehicles to move? Izzy says, "Look at as many different vehicles as you can." When you've done that, your next task is to draw your favourite vehicle and label the key parts.

Little bit of a clue is turn the vehicle upside down and then you can label those key parts, the chassis, the wheel, the axle, the engine, and the axle holder.

And finally, finish the sentences to explain the role of each of these key parts.

An axle is, a chassis is, an engine or motor are, and the axle holders are.

Pause video and join me when you've completed Task A.

Welcome back.

Well, I hope you've had lots of fun exploring the vehicles.

Did you remember turn the vehicle over to be able to draw the chassis and the parts of the vehicle? Brilliant.

Well, Izzy enjoyed talking about the vehicles with her friends, and then she sketched a picture of the underneath of the car and added the labels.

She turned it over and she drew her diagram and she labelled the axle holder, the chassis, the axle, and the engine or motor, and the wheel.

Now, the engine or motor would be on the other side of the chassis.

So that's why she's drawn the label the other way.

Well done, Izzy.

Izzy then finish the sentences to explain the special job of each part.

An axle is a rod that holds the wheel in place and allows it to turn.

The chassis is the framework of a vehicle that supports the body and engine.

The engine or motor are the machine that helps the vehicle to move.

And the axle holders are the parts where the axles go through to hold them in place, but they still allow it to rotate.

Well, done, Izzy, and hope you've all worked very hard.

We're now ready for the second part of our lesson, creating a design specification for a vehicle.

To make a moving vehicle using an axle and wheels, it is important to create a design specification.

A design specification helps the designer to? Thank you, Lucas.

Check the product works.

Andeep says, "Make sure that the product does what you want and expect it to do." And Izzy says, "It needs to meet the expectations of the person that you are making it for." Now, I'd like you to fill in the missing word, so are you listening carefully? Information collected to understand what a product has to do is called a design specification.

Design specification.

So I want you to see if you can work out what the missing word might be.

Information collected to understand what a product has to do is called a? Brilliant.

A design specification.

We're ready for our next check for understanding.

So what does a design specification do? Does it A, list ideas for the product? Does it B, describes a product to others? Or does it C, describes what a product has to do? Pause the video and have a little think.

Welcome back.

How did you get on? So what does a design specification do? It describes what a product has to do.

Well done.

What would you like your moving vehicle to do? Well, Lucas said, "I want my vehicle to have freely moving wheels." Andeep says, "I want my vehicle to travel in a straight line." Izzy said, "I want my vehicle to move by itself when pushed." Well, everyone's moving vehicle will be slightly different and that is absolutely fine.

Design specifications help the designer to create great designs and produce good quality finished products through checking them against the design specification throughout the process.

Finally, the designer can use the design specification for evaluations and feedback.

Sofia says, "Design specifications are very important." That is very true, Sofia.

Well done.

We're ready for our next check for understanding.

And this is a true or false question.

It is a good idea for a design specification to be written before the designer designs and makes a product.

Is this true or false? Pause the video now and have little think.

Welcome back.

So true or false? It's a good idea for the design specification to be written before the designer designs and makes the product.

It's true.

Well done.

Why is it true? It's true because it helps the designers check that products do what they need to do.

It can also help with evaluating and testing too.

We're ready for our next task, Task B.

And I'd like you to create a design specification for making your vehicle.

Who is your vehicle for? What type of vehicle do you want to make? What special things do you want your vehicle to have or to do? And will you use recyclable materials for your vehicle? Pause the video now and complete task B and join me when you're ready.

Welcome back.

I hope you've had lots of fun completing Task B and writing your design specification.

Well, this is Sofia's design specification.

So Sofia says her vehicle is for her brother because he is four years old.

And because he likes buses, her vehicle that she'll make will be a bus because he likes them.

And what special things do you want your vehicle to have or to do? And Sofia says it has got to be a double decker bus and it needs four wheels and two axles.

And I want to have wheels that turn.

Will you use recyclable materials in your vehicle, Sofia? And she says yes.

Well done, Sofia.

We've reached the end of our lesson for today and hope you've had lots of fun.

Well, I wonder if you'd show me a thumbs up if you think that you've met these learning points.

So a car has a chassis, body, wheels, axles, axle holders, and an engine or motor.

Show me your thumbs up if you feel you've met those points.

Super.

And creating a design specification for a vehicle will help to design and make a finished product.

Super.

And the design specification might include: travels in a straight line, has four wheels, wheels run freely.

Brilliant, well, thank you for joining me for today's lesson on "Design specification for wheeled vehicles" and I'll see you soon.