The document outlines the stages of human development from foetus to old age, detailing physical and emotional changes at each stage. It emphasizes the importance of healthy habits throughout life, including proper nutrition, exercise, and sleep, to maintain health and well-being. The document encourages readers to reflect on their development and identify healthy habits they can implement.

1. What you need to know
about the stages of human
development
From Birth to
Old Age

2. Think-Pair-Share
Identify three ways you have
changed from when you
were a newborn to now.
Discuss and compare your
list with a partner.

3. Name the key stages in
human development
Describe the changes at each
stage
Identify ways to keep the
body strong and healthy
1
2
3
Today, you will...

4. The Human Life Cycle
Name each key stage in the human life cycle.

5. How do we change and
develop at each stage?
foetus baby childhood adolescence adulthood old age
The Human Life Cycle
The key stages in the life cycle of a human are as follows:

6. Foetus
A foetus grows inside its
mother’s womb.
It gets its nutrition through
a tube called the umbilical
cord.
All of the major structures of
the body are formed in this
stage.

7. Baby
Babies have limited abilities
to control their emotions.
They communicate through
crying.
They experience rapid
growth physically and
mentally during the first two
years of their lives.
Over the first year, they learn
to reach, touch and hold
objects, crawl and walk.

8. Children are more independent
than babies. Physical changes also
slow down.
Childhood
They are said to be like sponges, as
they learn things quickly and easily.
They learn more about social
relationships through interaction
with friends and fellow students.

9. Children become teenagers and physical
changes begin to make the bodies of males and
females look increasingly different.
Changes occurring to their bodies and minds
seem strange, which can cause adolescents to
struggle to regulate their emotions at times.
They begin to establish their own identity and
aim for a sense of belonging and acceptance.
Adolescence

10. Adult bodies are fully developed
and physical changes are very few
and slow, if any at all.
This is also the stage where some
may have their own babies, starting
the human life cycle again.
A lot of adults get jobs and live
independently. They are also expected to
know how to manage their emotions well.
Adulthood

11. They are not as strong as when
they were younger but can still
have fun and stay active.
As the body ages, muscle mass reduces,
bones become more brittle and skin may
begin to wrinkle.
Sadly, old age can bring some decline in
memory and thinking as connections in the
brain become broken or weak over time.
Old Age

12. What stage are you at now?
Can you name at least two
things you can do on your
own now that you used to
need help with? Share your
answers with a peer.
LEARNING CHECK:
About You

13. Staying healthy will allow you
to enjoy your life at any stage
in the human life cycle.
What are things you can do to
stay healthy?
Staying
Healthy

14. Staying Healthy
Eat healthy foods Drink plenty of water
• Try to eat a mixture of foods from
different food groups: fruits and
vegetables, starchy food, dairy,
protein and healthy fat.
• Drinking water helps keep our
normal body temperature. It also
prevents our bodies from
becoming dehydrated, allowing
the body to work at its best.

15. Staying Healthy
• Our body isn’t made to sit around.
It needs regular exercise for the
joints and muscles to be kept in
good condition.
• Sleep allows our bodies to rest and
prepare for the next day. It also
helps the brain sort and process all
the information it receives
throughout the day.
Stay active Get enough sleep

16. Which Does Not Belong?
Go for a family
walk and bike ride.
Eat fruits and
vegetables.
Avoid drinking
water during
summer.
Eat food that is low
in nutritional value.
Watch TV until late
at night.
Sleep less than two
hours a day.
Spot the things that do not help you stay healthier and stronger.

17. Go for a family
walk and bike ride.
Eat fruits and
vegetables.
Avoid drinking
water during
summer.
Which Does Not Belong?
Eat food that is low
in nutritional value.
Watch TV until late
at night.
Sleep less than two
hours a day.
Spot the things that do not help you stay healthier and stronger.
Answer Key

18. • The six key life stages in humans are:
foetus, baby, childhood, adolescence,
adulthood and old age.
• Each life stage has its own set of
changes—some occur quickly, while
others occur slowly.
Review
Stages in the Human Life
Cycle
Staying Healthy
• Healthy habits, from a young age,
give rise to healthy adults.
• Some of the things you need to do to
stay healthy include eating healthy
foods, drinking plenty of water,
exercising and getting enough sleep.

19. What healthy
habit can you
start today?
Consider a new healthy habit
that you can start today. Find a
habit tracker on Canva,
download or print it, and start
working towards a brighter and
healthier future!

20. Resource Page
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