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Hello Monet and Smit,

Over the coming weeks, we’ll be setting you activities for Science. We have included all six

lessons here. Try to complete one Science activity a week.

You will explore the following:

Describing the simple functions of the basic parts of the digestive system in

humans.

Identify the different types of teeth in humans and their simple functions

Construct and interpret a variety of food chains, identifying producers, predators

and prey.

Remember: a key aspect of Science is asking questions! So when you’re learning, ask

yourself questions and, where possible, see if you can find the answer.

We look forward to seeing the work you produce and hearing about how your Science

knowledge is flourishing.

Don’t forget, you can send us emails, and pictures of your progress.

Ms Paintsil and Miss Edwards

Remember, if you can’t print this off, you can record your learning on paper.

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Lesson 1

In this lesson, we will explore the basic organs that play a role in the digestive system.

The food we eat must be broken down in order for us to absorb the nutrients they

contain-this process is called digestion and it happens in the digestive system.

So, what is the digestive system?

Click the links below to find out!

https://www.bbc.co.uk/bitesize/topics/z27kng8/articles/z9wk7p3

https://www.youtube.com/watch?v=Og5xAdC8EUI

Task

Label the organs in the digestive system using the key vocabulary below. (Template also

on page 13.)

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Challenge

Using your research skills, find out what the large intestine does and why it is important in

digestion.

Lesson 2

Now you are an expert on identifying the digestive organs, let’s explore the function of

each organ.

We will first explore what happens when our favourite snack enters our mouth.

https://www.bbc.co.uk/bitesize/topics/z27kng8/articles/z2rxb82

Let’s recap what happens.

Food enters the digestive system through the mouth.

Food is broken down into smaller pieces by chewing. The teeth cut and crush the

food, while it’s mixed with saliva. This process helps to make it soft and easier

to swallow.

After being swallowed, the food passes down the oesophagus and into

the stomach

The next journey is through the stomach. Watch the clip to find out more.

https://www.bbc.co.uk/bitesize/topics/z27kng8/articles/zg2g7p3

A quick summary.

Food arrives in the stomach through the oesophagus.

The stomach contains enzymes that break down food so it can be absorbed by the

body.

After this, the partially-digested food passes into the intestines where it begins to be

absorbed

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The food has now arrived in the intestines. Watch the clip to find what happens next.

https://www.bbc.co.uk/bitesize/topics/zv9qhyc/articles/zdkfvk7

What happens in the intestines?

In the small intestines the digested food is absorbed before nutrients will pass

through the wall of the small intestine and into the bloodstream.

Next, the nutrients are carried around the body to where they are needed.

The food that cannot be digested in the small intestines arrives in the large

intestines before leaving the large intestines and turning into faeces or poo which

we get rid of when we go to the toilet.

On the next page is a poster with lots of information.

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Then watch these video to learn more:

https://www.youtube.com/watch?v=v3E1txcKPe8

https://www.youtube.com/watch?v=ZBZWgrfZFbU

https://www.youtube.com/watch?v=EKpYv9sXBSE

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Tasks:

Silver

Match the digestive organs to their functions. (larger template on page 14)

Gold –Click on “Year 4_Science_ Su2_L2GoldActivity”

Optional - Experiment time

At home you can explore the digestive system by conducting this experiment.

You will need:

Orange juice

Water

Cream crackers

Banana

Plastic cups

Metal tray

Paper cup

A sealed plastic bag

½ a pair of tights

Scissors

Watch the clip below for clear instructions on how to conduct the experiment.

https://www.stem.org.uk/resources/elibrary/resource/35396/digestive-system-experiment

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Lesson 3

Today, we are going to learn about the types and functions of teeth. A mirror is needed

for this lesson as we will observe our teeth in the mirror.

What are the different types?

Using a mirror, can you identify these in your mouth? How many of each tooth do you

have?

Why do we have the different types?

Click on Year 4_Science_ Su2_L3Teeth.ppt for a powerpoint which explains the purpose

of each type.

Task

Using the key, label the different types of teeth and their functions. (larger template on

page 15)

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Task 2

Do other animals have the same type of teeth as humans? Why? Why not? Go through

the PowerPoint again and perhaps carry out your own research before completing the

task below.

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Lesson 4

In this lesson, it is all about tooth decay and how we can prevent this from occurring.

What is tooth decay? What causes tooth decay?

Watch the video below on tooth decay

https://www.youtube.com/watch?v=aCvScgI1MCs

The images below shows how a healthy tooth and an infected tooth look like.

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How can we prevent tooth decay?

Click on Year 4_Science_ Su2_L4Poster.ppt for Dr Jen’s powerpoint

Task

Create a poster to advice people on how to prevent tooth decay.

Look at the examples below

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Lesson 5

Welcome back Scientist! Lesson 5 is all about food chains and food webs.

What is food chain?

Watch the clip below for more information.

https://www.bbc.co.uk/bitesize/topics/zbnnb9q/articles/zwbtxsg

The food chains below show how energy is transferred.

Task

Create a food chain or a food web. You can create more than one. Remember the direction

of the arrows. There are animal cards below to help you.

A food shows how plants and animals get their energy-this energy is shown by

using arrows. The chain always starts with a producer which is an organism that

makes its own food. Most producers are plants.

This food chain shows that by

eating the frog, the energy

from the frog is transferred

to the owl. What do you

think will happen if frogs

become extinct? How would

the owl survive?

This is a food web. A food web has more

than one producer. From this food web,

you can see that the fox eats the rabbit

and the mouse, however the mouse is

also eaten by the owl.

How is a food web different/similar to a

food chain?

Watch the video below for an

explanation on how food webs work.

https://www.youtube.com/watch?v=M

GODmyXkkPU

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