2. Teacher’s Notes
A slide contains teacher’s notes wherever this icon is displayed -
To access these notes go to ‘Notes Page View’ (PowerPoint 97) or ‘Normal View’ (PowerPoint 2000).
Notes Page View
Normal View
Flash Files
A flash file has been embedded into the PowerPoint slide wherever this icon is displayed –
These files are not editable.

3. Human Reproduction
Humans use sexual reproduction to produce their young.
In order to do this the two parents have to have sex organs so that they can produce sex cells.
In humans, males and females have different reproductive systems and sex organs
Go to the activity on the next page to see how much you know.

4. Male or Female The next slide shows the names of eight different
parts of the male and female human reproductive systems.
Drag a name to the correct column depending on whether you think that this is part of the male system or part of the female system.

5. Male or Female
A drag and drop activity

6. The Male Reproductive System
The labels will reveal the function of the body part when the mouse is clicked over the labels and held down.

7. The Female Reproductive System
The labels will reveal the function of the body part when the mouse is clicked over the labels and held down.

8. Reproductive System
A drag and drop activity

9. In males the sex cells are called sperm.
Sex cells - Sperm
In males the sex cells are called sperm.
Sperm are produced in sex organs called testes.
The sperm and it’s labels are flash animations

10. Nucleus containing chromosomes
Sex cells - Eggs
In females the sex cells are called eggs.
Eggs are produced in sex organs called ovaries.
Nucleus containing chromosomes
cytoplasm
membrane
jelly coat
An egg is so big that this is how big a sperm looks next to it.

11. Sperm or Egg?
Both sperm and eggs have special features that makes it possible for them to carry out their jobs.
Look at the statements on the next page and decide which one you think belongs to an egg and which one belongs to a sperm. Once you think you know push the buttons to see if you are right.

12. Sperm or Egg?
The buttons on this screen will reveal the word sperm or egg when the mouse button is put over them and held.

13. Ovulation and Fertilisation
In the female one of the ovaries produces an egg every 28 days.
This is called ovulation.
During sexual intercourse sperm is ejaculated into the vagina.
If the sperm and egg meet the sperms nucleus will join with the eggs nucleus.
This is called fertilisation.

14. Fertilisation and Implantation

15. Word Check
A drag and drop activity

16. The Placenta
How does the embryo get food and oxygen and how does it get rid of waste?
It forms a plate-like structure called the placenta.
The umbilical cord joins the fetus to the placenta.
In the placenta food and oxygen diffuse from the mothers blood into the blood of the fetus.
Carbon dioxide and waste products diffuse from
the blood of the fetus to the mothers blood.

17. The Placenta

18. The Embryo
The embryo (fetus after 9 weeks) develops in membranous bag and is cushioned by amniotic fluid.

19. Embryo Development
A drag and drop activity

20. Embryo Development
In one of these images the developing baby is called an embryo.
Which one is it?
What name is given to the other five developing babies?

21. Birth

22. Puberty
Human children are born with a complete set of sex organs. However they do not become active until later in life.
Between 10 and 18 the testes start to make sperm and the ovaries start to make eggs.
This time of development in their life is called PUBERTY.
As well as these changes other changes may also occur.

23. Puberty in Girls
A drag and drop activity

24. Puberty in Boys
A drag and drop activity

25. Menstruation
One change that happens to girls at puberty is that they start to undergo a monthly cycle called the menstrual cycle.
This cycle is a process where the uterus lining builds up to receive a fertilised egg.
If an egg is not fertilised then the lining of the uterus breaks down and is lost from the body. This is called menstruation or a period.

26. The Menstrual Cycle

27. Describe the relationship between animal size and gestation period
Explain why you think this happens using as much science as you can
Are there any results that look out of place?
What do you already know about this animal that may explain why it doesn’t fit the pattern?
Can you predict the gestation period of a rabbit?