This document discusses food and nutrition. It explains that food provides us with energy and nutrients needed to grow and stay healthy. Food comes from plants like fruits and vegetables or animals like meat and milk. The document outlines the five main food groups: grains, vegetables, fruits, milk, and meat/beans/fish. It also describes the digestive system and the stages of digestion food goes through in our bodies.

1. 1
WE NEED FOOD TO LIVE
- Food gives us the substances we need
to grow and to stay healthy.
- We get energy we need to walk or study.

2. 2
- Some food comes from animals like meat
and milk.
- Others, come from plants, like fruit and
bread.
- We also need water and salt, that do not
come from plants or animals.
FOOD GRUPS
– We classify food into five grups:
1. Grains gives us energy.
2. Vegatables gives us vitamines .

3. 3
3.Fruit gives us vitamines to be healthy.
4. Milk gives us calcium to grow and have
strong bones.
5. Meat, beans and fish give us proteins.
A HEALTHY DIET
• Our diet is made up of the things that we eat
and drink.
• We need to eat food from all the grups
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.

5. 5
• There are four meals that we eat during
the day :breakfast, lunch, tea and dinner.
• It is important to have a good breakfast
• A good breakfast shoud have milk, cereals
and fruit.

6. 6
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.

7. 7
• Our stomach is a like a bag.
• Our intestine is a long tube made of small
intestine and large intestine.
• At the end of the large intestine is the
anus.

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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 the oesophagus and
into the stomach.
2. In the stomach food is mixed with gastric
juices.

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3. In the small intestine
• The food is divided into the substances
our body needs.
• All the useful parts of our food go from the
small intestine into the blood.
4. Parts we cannot use go into the large
intestine.
• They are transformed into faeces and
expelled through the anus.
• Digestion takes time (2 hours) We should
wait before we swim or run.