This document discusses the five senses - sight, smell, hearing, taste, and touch. It explains that each sense has a corresponding sense organ, such as the eyes for sight and the tongue for taste. The document also covers the basic functions of the skeleton, muscles, tendons, digestive system, respiratory system, and circulatory system. Finally, it states that the three main functions of human beings are nutrition, interaction, and reproduction.

1. UNIT 3– Natural Science
2nd year

2. We use the senses to get information that
happens around us.
THE SENSES

3. How many senses do we have?
The senses are five:
• sight
• hearing
• smell
• taste
• touch

4. The sense of sight
The eyes are the sense organs that we use
to see.
We can see colours and shapes with our
eyes.
• I can see a dog. It is brown.
• I can see a flower. Is is beautiful!
• I can see a purple baloon.

5. The sense of smell
The nose is the organ sense that we use to
smell. We can smell different things with
our nose.
• Rubbish and the toilet smell very bad!

6. The sense of
hearing
- The ears are the sense organs that we use
to hear.
• What can you hear?
• I can hear…

7. The sense of
taste
• The tongue is the organ sense that we use
to taste the food.
• What things can you taste?
- I can taste…

8. The sense of
touch
• We touch with our skin.
• We have skin on all the body.
• Some things feel soft. My teddy feels soft!
• I can feel ice. It is very cold!

10. • What do we use the five senses for?
We use the five senses to get information that happens
around us..
• What are the five senses?
The five senses are Sight, Smell, Hearing, Taste and
Touch.
• What are the sense organs of sight?
The eyes are the sense organs that we use to see.
• What is the tongue?
The tongue is the sense organ that we use to taste the
food.
• What is the skin?
The skin is the sense organ that we use to touch.

11. • The skeleton
supports the body
and has many bones.
• Bones are hard and
rigid.
• Joints connect the
• Muscles are soft and
flexible.
• Tendons join them to
the bones.
masseter

12. QUESTIONS
• What are the bones like?
The bones are rigid and hard.
• What is the function of the skeleton?
The skeleton supports the body.
• What is the function of the joints?
The joints connect the bones.
• What are the muscles like?
The muscles are soft and flexible.
• What is the function of the tendons?
The tendons join the muscles to the bones.

13. First, the teeth
chew the food.
Then, the food
goes to the
stomach.
Finally, the
intestines digest
the food and get
the nutrients.
MOUTH
INSTENTINES
STOMACH

14. • First, we breathe
in air through our
nose.
• Then, the lungs
get the oxygen
that our body
needs.
• Finally, we
breathe out.
LUNGS
NOSE
OXYGEN
CO2

15. • First, the heart
pumps the blood
around our body.
• Then, the blood
transports the
nutrients and the
oxygen to our
organs.
HEART
BLOOD

16. Human-beings have 3 functions:
Nutrition, Interaction and Reproduction.
1- Nutrition consists of getting energy
from the food that we eat.

17. 2- Interaction consists of relating to the
world and the people through the senses

18. 3- Reproduction consists of having babies
when we are adults.

19. • What does the nutrition consist of?
The nutrition consists of getting energy
from the food that we eat.
• What does the interaction consist of?
The interaction consists of relating to the
world and other people through our
senses.
• What does the reproduction consist of?
The reproduction consists of having
babies when we are adults.