Natural Sciences.

1. REPRODUCTIVE SYSTEM
6th PRIMARY

2. STAGES OF LIFE
Unborn baby

3. DIFFERENCES BETWEEN MEN AND
WOMEN
WOMEN MEN
Women also have breasts Men have a stronger voice.
Softer voice. More hair.
Less hair. Wider chest than women.
Wider hips.

4. FEMALE REPRODUCTIVE SYSTEM

5. MALE REPRODUCTIVE SYSTEM

6. SEX CELLS
• MALE SEX CELLS
– The male sex cells is sperm.

7. SEX CELLS
• FEMALE SEX CELLS.
– The female sex cells is ovum.

8. FECUNDATION
• If there is any ovum (egg cell) released, the
egg cell and the sperm cells meet.

9. FECUNDATION
• Once a sperm fertilizes an OVUM, it becomes
a zygote. The zygote then divides itself to
form a very tiny ball called an embryo. The
embryo continues downwards and finds itself
a confortable place in the uterus.

10. QUESTIONS (speaking)
• Which are the male sex cells?
• Which is the female sex cell?
• What is the fecundation?

11. FOETAL DEVELOPMENT
• The embryo becomes a foetus (say fee-tus) eight weeks after
fecundation. The foetus depends upon its mother for
protection, oxygen and nutrients as it develops.
Inside the uterus, there is a bag called the. ‘Amnion’

12. BIRTH
• After nine months the baby is fully developed
and ready to be born into the big wide world.

13. ACTIVITIES
• 1.- What is the fertilisation?
• 2.- Match the words
Male cells sex Meet sperm and ovum
Female cells sex 9 months.
Pregnancy Sperm
Fertilisation Ovum

14. JOURNAL
• How do you feel today?
• What have you learnt today?