Hello and welcome to today's lesson from the unit, "Growing Plants." This lesson is called, "Plants From Bulbs." Hi, my name is Mrs. Waller and I'll be helping you to learn more about plants today.

In this lesson you'll be able to explain that some plants grow from bulbs.

Let's start the lesson by taking a look at the keywords that we'll be using today.

Plant, bulb, flower bud, bloom, and hand lens.

Take a moment to think about these words.

Do you know what any or some of these words mean? Don't worry if you don't because by the end of the lesson you'll be an expert.

Today's lesson is in three parts.

The first part of the lesson, we'll be learning about where do plants come from.

Moving on to the second part, we'll be looking at what is inside a bulb.

And in the third part, we'll be learning about how bulbs start to grow.

So let's start by thinking about where do plants come from? Now, we know that most plants grow from seeds but there are some other plants that grow from something other than a seed.

Can we think about what that might be? So if we take a look at these beautiful yellow daffodils growing in the springtime in the field, quite often daffodils when they grow it lets us know that spring is here.

But the daffodils in this photograph have not grown from a seed.

Do you know what these daffodils might have grown from? In fact, do you know what else some plants can grow from? Yes, that's right.

These daffodils are plants that have grown from bulbs.

Some plants rest under the ground as bulbs.

They start growing when everything they need is just right.

What other plants grow from bulbs? Different types of plants can grow from different types of bulbs.

Can you name these plants that grow from bulbs? So here's our first photograph, can you name this plant? Have you seen this before? The name of this plant is tulip.

How about this one? Yes, these are snow drops.

And finally, one more photograph for you.

Do you recognise this plant? Yes, it's the daffodil that's now fully grown, well done.

Plants grow from bulbs at different times of the year.

Crocuses grow from bulbs and let us know that spring is here.

Lilies grow from bulbs and bloom in the summer.

We can eat some bulbs as vegetables too.

Do you recognise these? This is garlic.

Yes, this is an onion.

And here are some spring onions.

Have you ever eaten any of these bulbs? It's time for me to check your understanding from the first part of today's lesson.

True or false? Some plants rest under the ground as bulbs.

Would you say that was true or false? And the answer is, true.

And can you explain why that is? So what would you say to finish my sentence? I think this because.

You might want to choose from one of these two statements.

So some plants rest under the ground as bulbs.

I think this because they rest in the winter and often start growing in spring.

Or, they're not resting, the bulb means the plant is dead.

Which one do you think? Yes, that's right.

It's A, they rest in the winter and often bulbs start growing into plants in the springtime.

Which statement is false? All plants grow from bulbs.

Plants with flowers can grow from bulbs.

All vegetables can grow from bulbs.

That's right, A is false, all plants grow from bulbs.

Well, we know that all plants don't grow from bulbs because what else can plants grow from? Yes, seeds, fantastic.

Here is your first practise task.

We've got the fill the gaps activity and we've got different sentences with gaps for you to decide, should the word seeds go in there or the word bulbs.

You might just want to write down the word seeds and the word bulbs.

And you might just want to hold up the word that you think is correct.

Different types of plants grow from different, and bulbs.

What do you think might go in the first gap? Trees grow from.

So you've got to decide whether it's seeds or bulbs.

Some plants with flowers such as lilies and snow drops grow from.

Are you okay to move on? Some plants rest under the ground as, in the winter.

So do you think that's seeds or bulbs? Take a moment to double check.

Are you ready to see the answers? Different types of plants grow from different seeds and bulbs.

Did you get that one right? Trees grow from seeds.

Some plants with flowers such as lilies and snow drops grow from bulbs.

And the last one, some plants rest under the ground as bulbs in the winter.

Did you do okay with that one? Fantastic.

We are moving on now to the second part of today's lesson, and we're going to be thinking about what is inside a bulb.

Let's start looking at the outside of a bulb first.

We know that bulbs are round, often with a pointed end called a nose.

Have a look at the photograph of those bulbs.

Can you see their noses? Can you see that they have an end that's definitely more pointed? The outside of a bulb sometimes has a thin cover like paper, that can be peeled away.

But what do you think is inside a bulb? So here's a photograph of a bulb that's been very carefully cut in half so that we can see the inside.

And I think the most amazing thing about bulbs is that inside of a bulb there's actually a mini plant that's waiting to grow.

It's incredible, isn't it? So we can see things like the mini flower which is also known as the bud.

We might also be able to see just the very beginnings of the very short stem that will later grow into the stem.

We can see those little tufty bits at the bottom of the bulb, and those are its short roots.

Those roots are obviously going to grow longer and go deep down into the soil.

Did you know that there is these things inside of a bulb? Isn't science incredible? The parts of the mini plant inside the bulb are the same as the parts of the fully grown tulip.

And I'm just going to show you some of these parts.

We've got the little flower bud, we've got the short stem, and we've got those short tufty roots.

And when we look at the fully grown tulip we can also see the flower, and the stem, and the roots.

So inside of the bulb really is a mini plant waiting to grow.

It's time for me to check your understanding of part two from today's lesson.

True or false? Inside a bulb there is a mini plant waiting to grow.

Yes, that's right, it's true.

I think this because.

What are your reasons for thinking that this statement is true? You might want to choose from one of these.

You can only see the mini parts when the plant is fully grown.

You can often see the mini plant parts when you cut a bulb in half.

Which one of those do you think you might choose? Yes, you can see those mini plant parts if you cut the bulb in half and look really closely inside.

Moving on to our next questions.

Which part of the fully grown tulip is the arrow pointing to? Is it pointing to the leaves, the roots, the flower, or the stem? Yes, it's pointing to the flower at the top of the tulip.

How about this arrow? Is it pointing to the leaves, the roots, the flower, or the stem? The arrow is now pointing to the leaves of the tulip.

Fantastic.

And what about this arrow? Is it pointing to the leaves roots, flower, or stem? Correct, it's pointing to the stem.

And finally, which plant part is the arrow pointing to now? The leaves, roots, flower, or stem? Yes, it's pointing to the roots.

Moving onto your practise task now.

Ask an adult to cut a real bulb in half.

Now they need to do this and they need to be really careful.

So check that they're working carefully, you are in charge.

And if you've got a hand lens, it would be brilliant for you to use that to observe inside of the real bulb.

But if you haven't, you can observe with your eyes and you can use your other senses too.

Can you see the mini plant waiting to grow? And can you talk to somebody about which parts these will grow into? Here are some of the things that you might have observed.

"I can see the tiny flower bud that will grow into a flower." Could you see that in your bulb? "I can see the start of a very short stem inside the bulb." I wonder if you are able to see that.

"I can see the short roots that will grow longer." I think sometimes that's one of the easiest parts to see.

Did you manage to see that or was there anything else that you observed? Now we're moving on to the final part of today's lesson, and we're going to be learning about how do bulbs start to grow.

Just like seeds, bulbs are often planted in soil so that they can start to grow.

To know how deep to plant a bulb, then you need to get a ruler or maybe a tape measure.

And you need to measure, first of all how tall the bulb is.

So if we are using our ruler and measuring in centimetres this bulb here on the slide deck shows that it is five centimetres tall.

So what do we do with this information now? Okay, we use a little bit of maths.

So we know that the bulb is five centimetres tall and we need to multiply that number by three.

Five times three is? Well done, 15.

So this bulb needs to be planted in a hole 15 centimetres deep.

It's important for you to know that plants don't always need soil in order to grow.

This bulb has grown without soil but it has still grown with plenty of water.

Take a look at the photograph.

You can see a glass jar and the bulb is sitting right at the top of the jar.

Now, look really closely.

When the bulb has everything it needs the mini plant from inside of the bulb pushes out.

I'm going to add a label here.

What do you think this label is pointing to? So if you look really carefully you can see some long white things in the bottom of the glass jar.

What do you think they are? Yes, they're the roots.

The roots of the plant grow down for water.

And what do you think this label is pointing to? That's right, it's the green shoots of the plant and they're growing up for sunlight.

Now, if you've ever planted bulbs, you'll know that you need to be really patient when you are waiting for them to grow into plants.

It can take a few months for bulbs to grow into plants.

In fact, usually bulbs, we plant them in the autumn, and the bulbs wait over the winter, and then they grow in the spring when the weather is warmer and the days are longer.

So that's quite a long time to wait, isn't it? But it's worth the wait.

In order for plants to grow from bulbs we can plant the bulbs and observe what is happening over a number of months.

Have you ever planted bulbs before? Do you know what to do when you're planting bulbs? Take some time to explain to a partner.

If you've never planted them before, have a think about what you might need to do to grow a plant from a bulb.

Well, I've been out into the garden and planted some bulbs, so watch the video and that will show you what to do when planting bulbs.

Hello again.

I've come out to the garden to plant some bulbs and the bulbs that I'm going to be planting today are these beautiful allium bulbs.

Now they came in a packet and we're going to take one of the bulbs out.

And the first thing that we're going to do if you can remember, is we're going to measure the height of the bulb.

So I'm going to take my ruler and I'm measuring the height of the bulb, and this ruler measures in millimetres but I can see that this bulb is four centimetres tall.

So remember that information for later.

Now we could plant our bulbs directly into the ground but I'm using this rather large pot and I've already filled it with quite a lot of soil.

I've used either my garden trowel or a large spoon.

I'm just going to put a little bit more soil in.

So, if we can remember that our bulb was four centimetres we need to multiply that by three.

So four times three is 12.

So now, I'm going to take my ruler and I'm going to measure down into the soil.

It's a long way for me to go right down into the soil.

I need to put a little bit more soil into the pot.

There we go, and I'm going to dig down 12 centimetres, and that's how deep I'm going to plant my bulb.

Push it right down into the soil and I'm going to cover it over so we can't see the bulb anymore.

So I've dug my hole three times the height of the bulb and I've pushed the bulb right down.

And which way did I push it in? Yes, it was pointy end nose up.

So I'm going to remember that.

I'm going to add a label and I'm going to write, nose up, so that when my bulb starts to grow I can remember which way up I planted it.

I've covered my bulb with soil.

And the last thing that I need to do now is water where I've planted my bulb, and I have to be very very patient and wait to see what happens.

It's time for you to have a go now, let's get planting.

I'm now going to ask you some final questions to check your understanding.

What is the arrow pointing to? Is it the roots, the shoots, or the bulb? Yes, these are the shoots.

And the chutes are quite often green.

And this is the plant starting to grow up out of the bulb.

Well done.

Now here we have Andeep who's been trying to grow plants from bulbs, and he's wondering why his bulbs haven't grown.

He's saying, "I planted my bulbs two weeks ago and they have not grown." Why do you think Andeep's bulbs haven't grown? Well, Lucas is saying "Don't forget bulbs often take a few months before we see the shoots pushing through the soil." I think Andeep needs to be a bit more patient.

Do you? If he's only waited for two weeks, remember that bulbs can take months.

And here we have Sophia and she's wondering "Why haven't my bulbs grown? I put my bulbs on top of the soil and they have not grown." What advice would we give to Sophia? Well, Lucas again is saying, "Don't forget, bulbs should be planted deep into soil three times their height for them to grow." Can you remember how we can take a ruler and we can measure how tall the bulb is? And then we times that by three.

And that tells us how deep down into the soil to plant the bulbs.

We certainly don't want to just be laying them on top of the soil.

Moving on to our practise task now.

Some children planted bulbs with the pointy end or the nose facing down into the soil.

Now I'm wondering, will this be a problem? Because when you plant bulbs you're supposed to put the pointy end facing upwards.

So what might happen if we put the nose facing down instead? Here are some suggestions.

"The worms will move the bulb in the soil so it will be the right way up." "The shoot will grow down and the root will grow up." Oh my goodness, that's the reverse of what normally happens.

Do you think that could happen? "It doesn't matter, the plant will know which way to grow." So do you agree with that? What do you think will happen? Talk to somebody about your ideas.

And now it's time for you to plant some bulbs yourself.

And it would be really interesting to plant your bulbs some of them pointing their nose upwards, and some of them pointing their nose downwards.

And then you could get ready to watch them grow.

So if you've watched the video of me planting bulbs you'll know exactly what to do.

But here's a reminder for you.

Number one, dig a hole in the soil.

And remember, it needs to be three times the height of the bulb.

Number two, put the bulb in the hole.

Now you could put it pointy end up or pointy end down.

It'll be really interesting to see what happens.

And I think it's a good idea to add a label as well where you've planted the bulb, to remind you that this was a bulb nose up or nose down.

Number three, cover the bulb with soil.

And number four, don't forget to pour some water onto the soil where you've planted the bulb.

It's important that we observe and keep a record of what's happening over a number of months.

So we're going to observe the plant growing from the bulb today, after one month, after two months, and keep going until you get to at least six months, maybe even more.

It would be brilliant if you could choose a chart like this.

You could either draw a picture each month or you could take a photo and add it to the chart.

Have you made your observations today? Can you see anything growing yet? You need to draw a picture or take a photo of what you observe.

It's time for you to see what you've learned from the lesson today.

We know that some plants rest under the ground as bulbs in the winter.

What else can you remember from today's lesson? That's right, a bulb has a mini version of the plant inside waiting to grow.

Anything else? Yes, don't forget that when a bulb begins to grow into a plant, a root grows down, and a shoot grows up.

Fantastic work today everybody, well done.

The only thing that's left for you now is to complete the exit quiz.

Try to remember everything that you've learned today and I'm looking forward to seeing you in our next lesson about plants next time.