Hi everyone.

I'm Mrs. Courts and I'm very excited to join you today for the lesson on using Wind.

This is part of the Rotary Mechanisms: Windmills units.

Let's begin.

Our lesson outcome for today is I can describe how wind is useful.

I can describe how wind is useful.

We've got four new keywords today, so let's really listen really, really hard.

Let's look at them carefully and you can repeat them after me.

Are you ready? Rotary motion.

Rotary motion.

Can you say that? Brilliant, rotary motion is something that turns around in circles.

Well done.

Sails.

Sails.

Sails are parts for windmill that turn in the wind.

Blades.

Blades.

Blades are parts for wind turbine that turn in the wind.

Well done.

Millstone.

Millstone.

A millstone is a heavy stone that grinds green to make flour.

You've listened really nicely.

Well done.

We've got two parts of our lesson today, and our first part of our lesson is about rotary motion of using wind.

Are you ready? Do you know what these are? Where might you have seen them? Have a little look at the pictures.

You might have seen them somewhere on your holidays, on your travels.

What are they? Do you recognise any of them? That's right.

You might have seen them on the beach or down the side of the motorways or roads as you travel around.

These are all different types of windmills.

Well done.

They all look very different, don't they? But they all use wind to turn the sails or blades.

Have a little look.

We're ready for our first check for understanding.

Are you sitting nicely? Brilliant.

Have a look at the pictures, they might give you a clue.

These are all types of? Hmm, what are they? Is it windsocks, windmills, or windbars? Pause the video now and have a little think.

Did you get it right? Let's see.

These are all types of? (gasps) That's right they're windmills.

Well done.

Good listening and good remembering too.

You might find this windmill on the beach or in a play area.

Have you seen one of these windmills? They're often made from plastic and they usually have a large stick to hold the windmill in the ground and to keep it upright so it doesn't fall over.

Have a little look at these windmills.

Don't they look different? Well they're windmills that were built a very, very long time ago.

Well, these windmills were used to grind wheat, chop hay, or to cut wood.

They all had very special jobs to do.

Some windmills have very, very special jobs to do.

Let's see.

Alex says, "What special jobs do they do?" Hmm.

Well, this windmill is used to pump water back into rivers to stop flooding.

Well, that is a very special job, isn't it, Alex? These are the main parts of this windmill.

There's a sail, the bit that goes round when it's blown by the wind.

The axle, the bit that turns in the centre.

And the tower.

These are wind turbines.

They're very similar to windmills, but they use wind to produce electricity.

We use a lot of electricity at school and in our homes.

We use it to cook dinner to put the oven on or to turn the lights on so we can see.

And you find wind farms in large open spaces and sometimes out at sea where it can be very, very windy.

Can you see those wind farms? This is a wind turbine.

Can you see how tall it is? And I wonder what the main parts of this wind turbine are.

Well, this is a rotor blade.

Again, it turns around in that circular motion, that rotary motion.

And this is a generator.

And here are the power cables inside the tower to carry the electricity.

We're ready for our next check for understanding.

Hope you've been listening.

Let's see who's ready.

This is a true or false question.

All windmills produce electricity? All windmills produce electricity? Is that true or is that false? Pause the video and have a little think.

Right.

Well, let's see if you are right.

So all windmills produce electricity is (gasps) false.

Why? Why is it false? Hmm.

Some windmills are toys and for decorations in gardens, some produce electricity, but some also grind wheat to make flour.

They all do different jobs.

For the windmill or wind turbine to turn, the blades or the sails move in a rotary motion.

Rotary motion.

Hmm.

That was one of our keywords, wasn't it? (gasps) Have a look what shape do you think that they're turning in? Rotary motion.

Hmm? What's it look like? It looks like they turn in a circular shape, a circle.

So rotary means circle shaped, spinning like the wheels on your bike or your scooter.

We're ready for our first task now.

Now, I would like you to talk to your peers about these pictures.

What can you (gasps) remember? You have got a word bank at the bottom of the screen to help you.

You've got the words, windmill, wind turbine, rotary motion.

Do you remember what rotary motion means? (gasps) Well done.

(whispering) It's in a circular movement, circle shaped.

(stops whispering) And wind, electricity, blade and sails.

So you've got lots of words there.

And I'd like you to talk to your peers, your friends, about these pictures.

What can you remember? But use the word bank to help you.

I'll see you when you've completed Task A.

Well done.

Pause the video now and I'll see you after.

Welcome back.

By now, you should have had to talk with your friends about our word bank in the pictures and seeing how many of those words you could use.

Let's see.

You might have said, this windmill is very old and has big wooden sails.

It could be used to grind wheat to make flour.

Did you get that right? (gasps) Well done.

You might have said, this windmill is very old and used to pump water out to stop flooding.

Good memory.

Well done.

And this is a wind turbine.

It has blades, not sails because remember the sails are on the windmills, aren't they? Well done.

And the turbine produces (gasps) electricity.

Well done.

Very pleased.

We're now ready for our second part of our lesson, second learning cycle, and this is about rotary motion to make flour.

In a working mill, the windmill has a millstone.

Do you remember that word from our keywords? Hmm? Can you say it after me? Millstone.

Millstone.

Excellent.

Well done.

Here is the wheat and the millstone grinds the wheat into flour.

And can you see the millstone, the big round stone? And it's ground, all the wheat to make all that lovely flour ready for cakes and biscuits and bread.

As the sails turn in a rotary.

(gasps) That word again, do you remember rotary circular motion? The millstone grinds grinding the grain into flour.

So as the big sails on the windmill turn in this rotary motion, the millstone turns and it grinds the grain into flour.

Ready for our check for understanding? A millstone, let's see if you can remember what it is.

Does it A, turn the sails around? Does it B, grind the grain into flour? Or does it C, lights up the windmill? Hmm.

Have a little think pause video now.

Right, a millstone.

What does it do? Did you say a millstone (gasps) grinds the grain into flour? Oh, well done.

You're right.

To make flour, using a windmill, you need to: (gasps) first of all, step one is plant some seeds.

Can you see the seeds there? You then, in step two, need to wait for the grains to grow.

And after that, step three, you need to harvest the wheat.

In step four, you need to take the wheat to the mill.

In step five, the wind turns the windmill sails in a rotary motion.

And step six, the millstone grinds the wheat into flour.

Once the flour's ready, it can be used to bake lots of nice treats.

Do you recognise any of these? (gasps) What is it? It's bread.

Well done.

Do you recognise this one? Yes, it's a donut, well done.

What is this one? It's pizza, Well done.

And the final one, let's see if you've been watching.

(gasps) You're right, it's cake.

Well done.

So all of these things are made from flour.

Brilliant.

Your next task, task B.

Part one, you've got to cut out and order the pictures to show how flour's made using an old windmill.

When you've done this.

Number two, using your pictures, talk about how flour is made using an old windmill.

So remember to cut out and order the pictures.

And when you've done that, talk about how the flour is made.

Pause video now join me after you've completed task B.

Welcome back.

Well, I hope you managed to complete task B.

Are you ready? Sofia ordered the pictures.

Did you get them in the right order like Sofia? Did you manage to put 'em in the right order? Gimme a thumbs up if you managed it.

Brilliant, well done.

Sofia then talked to her friend.

She couldn't remember the name of the stone that grinds the wheat into flour.

Her friend helped her to remember.

Hmm.

Do you remember what that stone is called? Hmm.

Well, Alex says, "It's a millstone.

The special stone is called a millstone." Did you get that right too? Show me a thumbs up if you managed it.

Brilliant, well done.

We've reached the end of our lesson for today, and I wonder if you can show me a thumbs up if you managed to learn these points in our lesson.

Are you listening? Good.

So windmills have sails or blades which turn in a rotary motion around in a circular movement.

Show me your thumbs up if you know that now.

Brilliant.

Windmills use wind to produce electricity or pump water.

So windmills use wind to produce electricity or pump water.

Show me your thumbs now.

Excellent.

Brilliant listening.

And windmills use wind to grind wheat into flour.

Yes, to make lots and lots of yummy treats.

Thank you so much for listening and being stars today, and I'll see you next time.

Bye.