Lesson video

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

We are studying a unit called, Electronics: simple circuit and switches.

This is lesson number 5 of 10, and we have been learning how to design an electronic nightlight.

In today's lesson, we will construct simple series circuits using a programme called Tinkercad.

In this lesson, you will need an exercise book or some paper, a pencil to write and draw with and a computer or other device.

Today, I want you to start with your intro quiz.

Well done for completing that.

If you haven't got the intro quiz, you can pause the video now and go and try it.

We will start today by looking at some electrical components and recapping what we've already learned about them.

And we're going to think about what is CAD? And then we're going to look at how to use Tinkercad.

Finally today, I would like you to complete your exit quiz so you can prove all of the things that you've learned within this lesson.

Today we have some keywords.

I will say a keyword and then I would like you to repeat it after me, then I will also read a definition of each word.

The first word is CAD, can we say CAD? CAD is actually an acronym.

And it is an acronym for computer aided design.

Our next word today is Tinkercad which we'll use in this lesson.

Can you say Tinkercad? And it's a website used for CAD design.

Let's begin first by looking at electronical components and recapping what we know about them.

So I wonder if you could pause the video to match the components to the type of device.

So you got input device and output device.

Can you pause the video now and match them up? Welcome back, let's look at the answers together.

Did you match this switch with input device? Well done.

And did you match the LED to the output device that outputs light? And the bulb is an output device which also outputs light.

What about the batteries? Oh, well done.

Remember, either an input device or an output device, but they are a power source.

Excellent.

An LED is an output device.

Do you think that's true or false? That's right, that's true.

An LED gives out light 'cause it's an output device and electronic circuit.

This one says, what is a circuit? So pause the video now to read the options and choose which one you think is correct.

Welcome back.

Let's go through the options together.

Did you think it was option one? It is a path through which electricity passes.

Option two, it is an electrical output.

Option three, It is an electrical input device or option four, It is a processing device.

Which one did you go for? The correct answer was option one, a circuit is a path through which electricity passes.

What do you call a material which allows an electrical current to pass through it? Pause the video to select your answer.

Welcome back, what did you think? Well done, It's a conductor.

This is because it conducts the electricity through it.

Now here's some examples of some conductors.

Most conductors are metals for example, silver, copper, and gold.

However, there isn't a conductor here called graphite which is not a metal and it is actually inside the layer of a pencil.

What do you call a material which does not allow electricity to easily pass through it? Pause the video now to select your answer.

That's right, It's called an insulator.

This is because it does not conduct the electricity.

Here's some examples of insulators.

You've got glass, plastic, paper and ceramics.

Well done for remembering so much about electrical components that we might use when come to design and make our night light.

Now we're going to look at what is CAD? CAD is an acronym for computer aided design.

So we use a computer to help us to design components and products.

It is the process of using a computer programme to sketch the product first, and it's used for a lot of real life designers.

We will use the computer simulation part of CAD today.

So what is a computer simulation? It is used to simulate things in real life and could be very useful to a designer.

In this unit, we are going to use our CAD to simulate an electrical circuit that we could use within our nightlight design.

The reasons why we might do that is we might use it to check that our design will work and designers often use computer simulations as it's just quicker, easier and more accurate.

It also means that we can easily share files and different designs with other professional designers.

So we can work as a team on a different project, looking at different parts of the design.

Now, do you remember that time that we drew this sketch and this was a sketch of our theory circuit that we could use within our night light.

Right, well done for remembering.

Whenever we use a computer simulation today we will be completing this theme sketch by using the computer.

Now let's look at how to use Tinkercad.

This is what you will be looking for today.

This is the logo for Tinkercad.

Tinkercad is a free online 3D CAD modelling programme.

And it can be used by children and teachers either at school or at home.

To get started today you will have to sign up for a free account and you must have your parents or carers permission to do that.

So what I want you to do first is I want you to pause the video and I want you to go to www.

tinkercad.

com and sign up to the account.

And you can see it says at the top join now, that's where I want you to click on.

Once you've done that please come back and join me so I can go through what we want to do today on Tinkercad.

Now that you have set up an account up on Tinkercad you should be able to see this window.

I'm going to talk through with you together, how we can use this software today to create a semination of our simple theory circuit.

So along the left hand side, you can see this menu and I want you to click on circuits.

then I want you to press Create new Circuit.

This window will open now and what I want you to do first is I want you to label your circle as the thing that's going to be relevant to you.

Let me pull that Series Circuit 1.

Okay, and then I'm going to click on the window again.

It is named Series Circuit 1.

And on the top there are some useful tools to help me.

And also along here, you can see another toolbar which shows you all the different components that you're going to need.

Indeed click on this drop down menu you can search just the different types of components.

I'm going to say, all components today to help me find the ones that I need.

I'm going to use this toolbar to find my power source first.

So you see this is separate to input devices.

Input devices and also our sources down here.

So I'm going to choose to use a 1.

5V battery today.

Left click on it and just drag it out into my simulation window just like that.

This little menu pops up where I can change the name of the battery.

How many batteries I bought and the type of the battery and if it's got a built in switch.

I don't need to worry about that for now.

It just kind of window.

The next thing that I needed in my simple series circuit was the input device.

And I was going to pass a switch.

I'm going to go back to the top, to input devices.

I'm going to choose the simple push button switch.

And again, I just drag it out to my simulation window and finally I'll need output device today for my nightlight and I was going to choose the light bulb.

So again, I just click on my light bulb, hold on, drag it into my semination window.

Now, to make this a circuit I need to connect it with wires.

First of all, I think I might rotate some of my devices so they're in the correct positions so that's easier for me to do.

So i just click on the component I wish to rotate and I click up here and I rotate it.

Okay, I can try and get to where I want it to be.

Now I can start connecting them all together.

Let's start with the positive terminal, I'm going to cut the net with that drag and this pulls out this wire and that's going to be useful to connect up all the different components.

So when I click here, I'm going to click over here to connect it to the terminal of my switch, just like that.

Now I want to connect my switch to my bulb so again, I just keep drawing, drive my wire across.

I can click to make it hard to change angles.

And then I can connect up my light bulb.

Now I can also change the colour of the wire if I wish.

Okay, line is connect the other side of the bulb, to the negative ports of the battery to complete a complete circuit.

So if I want to change directions, I just click on the screen that will make my wire change direction.

Want to connect it to the negative terminal, just like that.

Let me check, do we have one complete circuit? I think we might do.

There's no bricks in the wire.

There's no components which are not connected.

Then what I might do is press start simulation and that's going to show me what would happen in real life If I connected up all these components.

So, all I need to do there is press my input device to see the light bulb light up.

There we go.

Now I want you to draw a circuit using Tinkercad.

You are going to draw a simple theory circuit and you must make sure that you include a power source, a switch, a bulb, or an LED and make sure that you draw wires to connect the components together to create a full circuit where electrical current can flow.

Pause the video now to complete your task.

Welcome back.

Did you find that your circuit looks something like this one? Congratulations, you've done really well within this lesson.

I hope you've enjoyed using the computer simulation to make your own simple series circuit.

Thank you for joining me in today's lesson.

I've had such a great time looking at you think computer simulations in CAD to construct simple series circuits together.

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

I'd love to see your work as I'm so proud of all the work that you have been doing.

I'd like to say goodbye now, but in the meantime I hope you stay safe and happy.

And I hope to see you again soon.

Goodbye, everybody.