1. 1
Food and digestion
- Some food comes from animals, like milk.
- Other, comes from plants like fruit and
bread.
- We also need water and salt, that do not
come from plants or animals.

2. 2
WE NEED FOOD TO LIVE
- Food gives us the substances we need to
grow and to stay healthy.
- We get energy to walk or study.
- Some food comes from animals like meat
and milk.
FOOD GROUPS
- We classify food into five groups:
1.Grains gives us energy.
2.Vegetables give us vitamines.
3.Fruit gives us vitamines to be healthy.

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4.Milk gives us calcium to grow and have
strong bones.
5.Meat, fish and beans gives us proteins to
have strong muscles.
A HEALTHY DIET
- Our diet is made up of the things that we
eat and drink.
- We need to eat food from all the groups to
stay healthy, this is a balanced diet.

4. 4
HOW MUCH FOOD DO WE
NEED?
-The quantity of food we need depends on
how old we are and how much physical
exercise we do.
- When we are growing we need more of
some types of food. For example, we need
milk.
- If we do a lot of exercise, we need to eat
more.

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FOOD AND MEALS
-There are four meals that we eat during the
day: breakfast, lunch, tea and dinner.
- It is very important to have a good
breakfast.
-A good breakfast provides the nutrients that
people need to start their day off rigth.
-A good breakfast should have milk, cereals
and fruit.

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THE DIGESTIVE SYSTEM
- The digestive system is made up of the
following organs: the mouth, oesophagus,
stomach, intestines and anus.
- Food enters our body through our mouth.
- Our oesophagus is a tube between our
mouth and stomach.
- Our stomach is like a bag.

7. 7
- Our intestine is a long tube. It is made up
of two parts: small intestine and large
intestine.
- At the end of the large intestine is the
anus.
THE STAGES OF DIGESTION
1. Digestion begins in the mouth:
- Our teeth cut and chew the food.
- Our tongue mixes the food with saliva.
- Then food goes down to the oesophgus
and the stomach.

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2. In the stomach:
- food is mixed with a liquid (gastric juices).
3. In the small intestine:
- the food is divided into the substances our
body needs.
- All the useful parts of food go from the
small intestine into the blood.

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4. Parts we cannot use:
- Go into the large intestine.
- They are transformed into faeces and
expelled through the anus.