Hi there.

My name is Mr. Booth.

And I'm delighted that you are joining me today for your design and technology lesson.

We have got a brilliant lesson to go through.

We are gonna be learning all about card lever mechanisms. The outcome of today.

I can explore and create lever mechanisms using paper and card.

How brilliant does that sound? So by the end of this lesson, you will be able to describe how a card lever mechanism works.

You'll be able to identify all the pieces of a card lever mechanism.

And also, you will have made your first-ever card lever mechanism.

Should we have a look at some keywords? So these are our keywords today.

So let's do these together.

So my turn, mechanism.

Your turn.

That's brilliant.

So what is a mechanism? So for this context, a mechanism is something that creates movement in an object.

Hmm, can you think of anything that might do that? The next key word.

My turn, lever.

Your turn.

Brilliant.

Well done.

So a lever is a bar that helps lift or move things by turning on a point.

The next one.

My turn, rigid.

Your turn.

Amazing again.

So rigid means unable to bend, or be forced out of shape.

And the final one, pivot.

Brilliant.

Well done.

And of course a pivot is a point around which an object moves or rotates.

Today's lesson has three parts to it.

We call these learning cycles.

So let's get going with the first one, which is all about the features of a mechanism.

Lots of objects move in different ways.

What are these objects, and how do they move? Do you know what they are? Have a little think, or have a chat with the person next to you, and let's see what you come up with.

So let's have a look at these objects a bit closer.

So a door handle has a mechanism that moves up and down.

I bet you've all used a door handle today.

The mechanism on a bicycle makes the wheel move round and round in a circular motion.

And finally, in your kitchen, I bet you've got some drawers that you open, or the mechanism of a drawer moves it backwards and forwards.

So let's just check to see if you've fully understood that.

So first of all, my turn.

Something that creates movement in an object is a mechanism.

For example, a door handle.

Now, it's your turn.

How did you get on? So you might have said something that creates movement in an object is a mechanism.

For example, wheels on a bike.

Well done.

So true or false? A mechanism makes something move.

Have a little think about it, pause the video, and come back and let's see how you got on.

Okay, how did you get on? Did you answer true? If you did, you're right.

Well done.

But can you explain to me, why? Hmm.

Have a think.

Well, of course this is true, because there are lots of different types of mechanisms as we have just seen, and they all make different movements.

Well done.

So we're now onto your first task.

So what I would like you to do is fill in the gaps using the word bank that you can see at the bottom of the screen.

So first of all, we have a window.

So our object is the window.

And what we wanna think about is thinking about opening the window, the mechanism that opens the window.

So this object is a window.

The mechanism makes it move what? The next object is a blind.

So this could be sat behind the window.

So this object is a blind.

The mechanism makes it move what? And then finally, we have the bike wheel.

So this object is a bike wheel.

The mechanism makes it move what? Pause the video now, have a go at this, and let's come back together in a moment to see how you get on.

Fantastic.

How did you get on? Let's see if you've got the same answers as me.

So first of all, we had the window.

Well this object is a window, and the mechanism makes it move forwards and backwards when you want to open that window on a hot summer's day.

The next one is a blind.

So it might be dark at night, and you wanna close the blind of your window.

Well the mechanism of this makes it move up and down.

And then finally, of course we've already looked at the bike wheel, haven't we? So you should have got this one.

The mechanism makes it move around and round.

Well done with that.

Let's move on.

So we're now gonna move on to the next part of our learning, which is features of a lever mechanism.

So a lever is a type of mechanism.

For example, we've already looked at the door handle.

And the door handle moves up and down.

That's a lever.

We also have a pair of scissors.

I bet you've used those before.

And the scissors open and close to cut paper.

And then of course we have a hammer.

This is in fact a claw hammer, which you can use to pull out nails if you no longer want nails, for example, in your piece of wood.

Now this I'm sure you recognise.

This is a seesaw, and again, it is a lever.

As one side goes down, the other side of course, goes up, which is how you enjoy your seesaw in your local park.

A lever is a solid, rigid bar.

We've got two keywords there.

We've got the lever, and the rigid.

So a lever is a solid rigid bar.

When it moves, the ends of the lever actually make a curved shape in the air.

But the rigid bar keeps the original shape.

So if you think about your seesaw going up and down, and you think about the movement of the end of the rigid bar, you can imagine that it's making that curved shape.

Whereas the seesaw, which is a rigid bar, that actually stays the same shape and stays rigid.

So quick check.

Can you fill in the missing word? A lever moves in a direction.

Is it A, circled? B, straight? Or C, curved? Pause the video, have a go at that, and let's see how you get on.

It is of course, curved.

We talked about that at the ends of that bar.

They move in a curved shape.

Well done.

On a lever, we also have what is called the pivot.

This helps make the lever move.

And as you can see on our example here, it's sitting in the middle, and our lever moves around that.

By turning on one foot, you are pivoting around and moving on the spot.

This is the same as a pivot point on a lever.

It allows the movement.

A nice way of trying to remember this is a ballet dancer.

A ballet dancer, when they spin round on their toes, they are pivoting on the spot.

I'm gonna try that.

Hey, that was pretty good, wasn't it? I was pivoting on the spot, on one foot.

Not quite as good as a ballet dancer, but still, I was pivoting.

So quick check for understanding.

Which arrow points to the pivot on this seesaw? Is it the arrow in A? Is it the arrow in B? Or is it the arrow in C? Pause the video, have a think, and let's see how you you get on.

Okay, how did you get on? Did you answer C? Brilliant if you did, well done.

So now we're onto your next task, Task B.

And what I would like you to now is make a lever using a cylinder.

Now you could use a glue stick for that, I think this is perfect for that.

And of course I would want you to use a rigid piece of cardboard.

Now you might not have a rigid piece of cardboard lying around.

So what we need to do is we need to find another rigid bar.

So you could of course use a ruler if you don't have cardboard.

What I also want you to do once you've made it, is to be able to identify, okay, those different parts of this lever mechanism.

I would like to identify the rigid bar, and also the pivot point.

Pause the video, have a go at that, and let's see how you get on.

Brilliant.

Did you make your lever? I bet you did.

Okay, did it look at anything like the one that I have made? You can see it here going backwards and forwards.

Let's see what Lucas says.

So he said, "We made a lever using a glue stick, and a piece of rigid cardboard." Well done, Lucas.

And then Sam says that the lever goes up and down.

It is a rigid bar.

And then Izzy also adds the pivot is in the middle of the seesaw.

That of course is where the glue stick is.

Did you get the same as them? I bet you did.

Well done.

So we're now onto our final learning cycle.

The final bit of this lesson.

And this time, and for this one, we're gonna make a lever mechanism.

As part of this unit, you are gonna be making a celebration card.

And we're gonna make a celebration card even better by making parts of it move.

And in order to do that, we can use levers.

So what we can do is we can move the picture that we're gonna put on our celebration card in curved directions by using a lever mechanism.

We can turn the lever around to make different movements.

So if you look at my two examples on the screen at the moment, I've got almost a seesaw movement of the lever going up and down.

But what we could do is we could turn the lever on its side, and we can actually make the lever go left to right instead.

There are four key parts to card lever mechanisms. Let's have a look at those.

The first one is we need a picture, something creative and exciting.

We also need a cover, or a slot.

So in this case, we've used the sea.

We need a split pin as the pivot.

And then finally, we have the cardboard lever hidden behind the cover.

A split pin is used to make a pivot because they're easy to use, and they let the paper turn, which is pretty important when we want to make a lever mechanism.

Now this is a really easy and safe way of making a hole in your lever.

Place sticky tack on your desk, put the lever on top, and then use a sharp pencil to make a hole in the end of your lever.

Quick check.

What should you use to make a pivot hole in the cardboard lever? Is it A, a pair of scissors? B, a pencil? Or C, a pin? Pause the video, have a go.

It is of course a pencil, a sharp pencil.

Well done.

The cover or slot holds the lever in place, and can also hide it.

This is quite important when we're making a card for somebody, because we don't want 'em to see the whole lever, just the picture, and maybe the end of it so they can make it move.

So in this example, you can see we've got the cover down at the bottom there, which we've made look like the ocean, or the sea.

To make a lever mechanism, we need these materials and equipment.

So let's try and do this together, so we can make sure we've got all of the things we need to be able to make our lever.

We have a pencil, split pins, sticky tack, a glue stick, some pieces of cardboard, and finally, scissors.

Make sure you've got all that equipment before we move on to our task.

Quick check for understanding.

To make a pivot, remember, this is the part that the lever moves around, which is the best item to use? Is it A, a paperclip? B, safety pins? Or C, a split pin? Pause the video, and have a go.

It is of course C, split pins.

And of course now you know the really safe and easy way of adding holes for split pins in your levers.

Okay, so we're now onto your final task.

Task C.

What I would like you to do is design the picture.

That's the bit that will move, for your lever mechanism.

Once you have done that, you need to draw it on paper or card, and then you need to cut it out.

Finally, to make your lever using the cardboard template, what I would like you to do is cut out the lever strip and the cover.

Remember, you can be as creative as you want when you're doing this, and then make the holes using that really neat trick with the sticky tack, and also the sharp pencil.

You then need to join the cover to the lever using the split pin.

And then finally, attach your picture to the lever, and make sure that it works.

So pause the video now, have a go at that.

Have lots of fun doing that as well.

And then let's come back and see how you got on.

How did you get on? I bet yours looks absolutely amazing.

So what you should have done is of course, drawn out your picture and cut it out.

You should then have cut out the lever and the strip cover, made your hole in them, joined the cover to the lever using the split pin, and then attached your picture to it.

Well done.

That's absolutely brilliant.

You've made your first lever mechanism.

So that's the end of this lesson.

But let's just have a quick review of what we have learned.

So first of all, mechanisms make something move, and can include levers.

Exactly the same as what you've just made.

Levers are rigid bars that help lift or move things by turning on pivot points.

The ends of the lever move in a curved direction.

Finally, levers can be made using card and split pins.

Very well done today.

It's been brilliant teaching you.

I hope you join me for more design and technology lessons.

Bye bye!.