The document outlines the three vital functions of human beings: nutrition, interaction, and reproduction. It also classifies animals into two main categories, vertebrates and invertebrates, with vertebrates further divided into five groups: mammals, birds, fish, reptiles, and amphibians. Additionally, it includes questions and activities designed to reinforce understanding of these concepts.

1. N AT U R A L S C I E N C E – U N I T 2 – PA R T 1
3 R D O F P R I M M A RY
VERTEBRATE ANIMALS

2. VITAL FUNCTIONS
• All human beings have three vital functions:
• NUTRITION
• INTERACTION
• REPRODUCTION

3. NUTRITION
• It is the process of taking in food and turning it into
energy.
• Food contains substances called nutrients.
• That process help us grow and gives us energy.

4. INTERACTION
• It describes the relationship that we have with the world
around us.
• We receive information from outside by the senses and
we react to them.

5. REPRODUCTION
• It is essential for any living species
to survive.
• We reproduce to make sure that
other humans continue to live after
we die.
• This is the process of making and giving birth to a
baby.

6. CLASIFICATION
• There are two kinds of animals
• VERTEBRATES: they have skeleton
• INVERTEBRATES: they don’t have skeleton

7. VERTEBRATES ANIMALS
• There are 5 groups of vertebrates:
• MAMMALS
• BIRDS
• FISH
• REPTILES
• AMPHIBIANS

8. MAMMALS
• Mammals have HAIR in the body
• They have extremities:
-Legs – the dog
- Fins – the dolphins
- Wings – the bat
Most of them are VIVIPAROUS
. They breath by LUNGS
. In the mouth, they have TEETH

9. MAMMALS
DOG CAT LION GIRAFFE
ELEPHANT DOLPHIN SHEEP HORSE

10. REPTILES
• Reptiles have SCALES IN THE BODY
SNAKE CROCODILE TURTLE

11. AMPHIBIAN
• Amphibians have NUDE SKIN
FROG SALAMANDER

12. QUESTIONS
• What are the names of the three vital functions?
• Which gruop has FEATHERS in the body?
• Which groups has SCALES in the body?
• Which group is the dog in?
• Which group is the frog in?
• Which group has HAIR in the body?
• Which group is the snake is?

13. ACTIVITIES
• 1. Write two animals of each group:
• MAMMALS:
• BIRDS:
• FISH:
• REPETILES:
• AMPHIBIAN:

14. ACTIVITIES
• 2. Classify these animals in the correct group:
FROG – TURTLE – DOG – BAT – SNAKE – CANARY – SARDINE –
SALAMANDER – DOLPHIN – SHARK – PARROT – CAT -
CROCODILE
MAMMALS BIRDS FISH REPTILES ANPHIBIA
N

15. JOURNAL
• What’s your favourite animal? Make a picture of it and
write the name and its group.