Hello and welcome to today's lesson from the unit: Introduction to Food Chains.

This lesson is called Introduction to Food Chains.

By the end of this lesson, you'll be able to order different plants and animals in a simple food chain.

Hello, my name's Mr. Loudon and I can't wait to learn science with you today.

I know if you concentrate and work hard, you are going to be amazing learning superstars.

So let's get started.

Before we start the lesson, let's have a look at some of the keywords, animal, living things, plant, food chain.

Do you know what any of the words mean? Have you heard them before? Have a think.

This lesson is split into two parts.

The first part of the lesson is called Staying Alive.

The second part of the lesson is called What is a Food Chain? Let's start with the first part of the lesson now.

Animals are living things.

All animals need food to stay alive.

It helps them grow strong and healthy.

Look at the picture of the horses on the board.

What are they eating? What do you think would happen to them if they didn't have any food? Have a think.

All animals need food, but some can go for a very long time without eating anything at all, like these camels.

Camels can live for over a month without eating anything.

They have a store of fat in their humps, which they can use if they can't find any food.

And these emperor penguins can go without food for a long time too.

They need to sit and rest on their egg to make sure that it's protected.

And whilst they're doing that, they can't eat anything.

Like the camels, they have a store of food in their fat, which they can use to give them energy.

What do animals eat? They don't all eat the same thing, do they? This bluefin tuna is a carnivore, which means it eats other animals like fish, squid, and other sea creatures it finds in the sea.

But this tortoise is not a carnivore, it's a herbivore.

That means it eats plants.

And this tortoise likes to eat dandelions, fruit, and vegetables.

<v ->How do animals get their food?</v> They don't all get their food in the same way do they? This animal's called a hyena.

And a hyena is an example of a scavenger.

A scavenger is an animal that finds food that's been caught by other animals.

So for example, a lion might have caught an animal and not eaten all of it, and the hyena might come along and have some of the rest of it.

But this animal's called a manatee and manatees are also sometimes called sea cows.

They look a bit like a cow, don't they? And like cows, they're herbivores.

But these manatees eat grasses and plants that are found on the bottom of the sea, on the seabed.

Let's check your understanding now.

True or false, all animals need food from other animals to stay alive? Is that true or false? And underneath it says, "I think this because.

." So I want you to think of a reason why you think it's true or false.

Stop the video now and have a think.

Shall we go through the answer? True or false, all animals need food from other animals to stay alive? That's false, and you might have given a reason like this.

All animals need food to stay alive.

Some get this food from other animals, but others get it from plants or from both plants and animals.

Well done, scientists.

Let's look at task A now.

Talk to a partner about your ideas and fill in the missing words.

So at the bottom of these sentences are some words.

They say, die, living things, food, enough, and plants.

And you need to put those in the gaps so that the sentences make sense.

Let me read through it and I'll pause where we need to put those missing words, animals are.

They need, to stay alive and to stay healthy.

Animals get their food from, and other animals.

If an animal does not get, food, it will eventually.

What I want you to do now is stop the video and have a think about where those missing words go in the sentences so that they make sense.

Good luck scientists.

Let's go through some answers now.

Animals are living things.

They need food to stay alive and to stay healthy.

Animals get their food from plants and other animals.

If an animal does not get enough food, it will eventually die.

Great work, scientists.

Let's move on to the second part of the lesson now.

What is a food chain? Living things depend on each other for food, and we can show this process in a food chain.

And below is an example of a food chain.

So here's a picture of some grass, and the grass has got an arrow that goes to a caterpillar.

And from that picture of the caterpillar, there's another arrow that goes to a blackbird.

Now what I want you to do is to have a think.

What does this food chain show? What do the arrows mean? Where does each of the living things get their food from? Speak to a partner or have a think now.

What does the food chain show? Did you get it? Did you think about what the food chain shows? Well, the arrows in food chains show you how animals depend on plants and other animals for food.

Here's an example of another food chain.

We've got an acorn and then an arrow that goes to a squirrel and then an arrow that goes to a fox.

And the arrows in the food chains can be thought of as meaning is food for.

So what I want you to do now is talk to a partner or think to yourself, what does this food chain show? If you were to use, is food for, instead of the arrows do you think you could make a sentence? Have a go.

Let's check your understanding now.

True or false, the arrow in a food chain means eats? Is that true or false? And it'd be really good if you could think of a reason why it's true or false as well.

So stop the video now and have a think.

Shall we go through the answer? True or false, that arrow in a food chain means eats? That's false, and you might have thought of a reason.

Something like this may be.

I think this because the arrow in a food chain means is food for.

For example, the lettuce is food for the tortoise.

You have to be careful, don't you? It doesn't mean eats, it means is food for.

Well done, scientists.

Let's do another check now, in which direction should the arrows in this food chain point? So we've got the plant, the caterpillar, and the blackbird.

Remember we learned in the last slide that the arrow means is food for.

So that might help you.

Stop the video and have a think about where the arrows go in the food chain and which direction they face.

Shall we have a look at the answer? In which direction should the arrows in this food chain point? So we've got the plant, the caterpillar, and the blackbird.

And remember we said the arrows means is food for.

So let's have a look.

There we go.

The plant has an arrow that points towards the caterpillar because the plant is food for the caterpillar.

And the caterpillar has an arrow that points to the blackbird because the caterpillar is food for the blackbird.

Well done, scientists.

So we've looked at two food chains now, haven't we? We've looked at the food chain that goes grass to caterpillar to blackbird.

And we've also looked at the food chain that goes from the acorn to the squirrel and then to the fox.

Now what I want you to do is have a think.

What do you notice about the start of each food chain? The food chain at the top starts with grass, doesn't it? And the food chain at the bottom starts with an acorn.

How are those two things similar? Stop the video and have a think.

Did you get it? Did you think about how the grass and the acorn was similar? Well, the grass is a plant, isn't it? And the acorn is part of a plant too.

And food chains start with plants.

And here's a picture of some plants growing in the garden.

Plants are really special.

And the reason they're special is because they can make and store their own food.

And they provide food for animals at the start of a food chain.

Let's stop and check your understanding now.

True or false, a food chain starts with an animal? Is that true or false? And maybe you can think of a reason why it's true or false.

Stop the video and have a think.

Right, let's have a look at the answer now, true or false? A food chain starts with an animal? That's false and you might have said that you thought this because a food chain does not start with an animal.

A food chain starts with a plant.

The plant can make its own food that animals must get their food from plants or from other animals.

Well done, scientists.

Let's have a look at task B now.

Put these food chains into the correct order.

So here we have a food chain that says lion is food for leaves, is food for giraffe.

I don't think that's in the right order at the moment.

You have a worksheet which you can use.

You can either cut out the pictures or draw them, and I want you to make that food chain make sense.

And there's another one here too.

It says, sharks is food for seaweed, is food for sea otter, is food for starfish.

I don't think that food chain's in the right order either.

Can you cut or draw these food chains so that the animals and the plants are in the correct order? I'll give you some time now.

Stop the video and have a go.

How did you get on? Should we have a look at some of the answers? Put these food chains into the correct order.

So this is what it should have looked like.

Leaves are food for the giraffe and the giraffe is food for the lion.

That makes sense, doesn't it? Because giraffes are herbivores and eats leaves from acacia trees and the lion might eat the giraffe.

Okay, let's look at the next food chain now.

Seaweed is food for starfish.

The starfish is food for a sea otter and the sea otter is food for a shark.

That was a bit more complicated, wasn't it? Because there were four different pictures you needed to order there.

Did you get it right? Well done, scientists.

Let's have a look at the second part of task B now.

Name these plants and animals and put the food chains into the correct order.

So this is a bit more complicated because you've got to rearrange the food chains and you've got to name the plants and animals.

This is the first food chain.

What are the names of those living things? And where do they go in the food chain? This is the next food chain.

Do you think you can name those living things and put that food chain in the correct order? Have a go, stop the video, have a go at putting those food chains in the correct order and labelling each of the pictures.

How did you get on? Did you get it? Let's look at the second part of task B now.

Name these plants and animals and put the food chains into the correct order.

The first picture was a carrot.

And a carrot is food for a rabbit and a rabbit is food for a fox.

Did you get that one? Let's look at the next one now.

Wheat is food for a mouse and a mouse is food for an owl.

Did you get it? You had to name the plants and animals this time too, didn't you? Well done, scientists.

Let's look at the third part of task B now.

Food chains are all around us, and what I want you to do is to go outside in your local environment, so your school grounds or a garden may be.

And think about what examples of food chains can you find.

Now you'll need to tell an adult where you are going and you might want them to go with you.

And it might be a good idea to take a pencil or a pen or something to write on so you can note these things down.

Here are some examples of things you might find.

A ladybird eating a leaf.

So you could have a simple food chain there of a leaf is food for a ladybird.

And here's another example of things you might see outside.

A robin eating a worm.

So you could, again, draw a simple food chain of worm is food for a robin.

I bet you can see lots and lots of things if you look hard enough outside.

Can you see animals eating something else? I'm sure you can see lots of plants.

What do the plants get eaten by? Go into your local environment, go outside and have a think.

What food chains can you find? Stop the video now and go and have fun looking for those food chains outside.

Did you have fun? What examples of food chains did you find outside? Well, here's Izzy and Sofia.

They went outside and they had a look for different food chains they could find.

Izzy said, "I spotted some stinging nettles.

I think a caterpillar's been eating them." And Sophia says, "I know that hedgehogs eat caterpillars.

Let's make this into a food chain." And that's what they did.

They put nettles at the start of the food chain.

Because remember, plants come at the start of a food chain.

And the nettles are food for the caterpillar.

And the caterpillar is food for a hedgehog.

And that's their simple food chain that they found outside.

Did you come up with a food chain too? Can you share it with a partner or adult and explain to them the different parts of the food chain? Well done, scientists.

Let's go through what we've learned in the lesson now.

Animals need food to stay alive.

The food an animal eats comes from plants or other animals.

A food chain shows the order in which living things depend on each other for food.

A food chain begins with a plant.

Now might be a good time to go back to the start of the lesson and review those key words.

Can you think about what they mean? And maybe you can tell them to a partner and use them in a sentence.

You've done so well this lesson, scientists, well done.