Download populationpyramids10.18

Do Now: Answer the following
question in complete sentences.
What can we learn from
population pyramids?
How do population pyramids
help us learn about
population?
Population pyramids are used to show information about the age
and gender of people in a specific country.
Male
Female
There is
also a high
Death Rate.
In this
country
there is a
high Birth
Rate
Population in millions
This population pyramid is typical of countries
in poorer parts of the world (LDCs = lesser
developed countries)
In some LDCs the
government is
encouraging couples to
have smaller families.
This means the birth rate
has fallen.
Male
Female
The largest
category of
people were
born about
40 years ago.
In this country
the number of
people in each
age group is
about the same.
Population in millions
In this country there is a low Birth Rate and a low Death
Rate.
This population pyramid is typical of countries in the richer
parts of the world (MDCs = More developed countries)
Male
Female
Population in millions
In this
country the
birth rate is
decreasing.
This is happening
more and more in
many of the world’s
richer countries.
In the future the elderly
people will make up the
largest section of the
population in this country.
Male
Female
Population in thousands
This country has a large number
of temporary workers. These
are people who migrate here
especially to find a job.
Population pyramid for
Mozambique.
Population pyramid for
Iceland.
What can we infer
about these two
countries’ level of
development?
Their birth and death
rates?
Access to family
planning?
Education of women?
Their futures?
Creating and Interpreting Population
Pyramids
Partner work:
Use the data to help you create a population
pyramid for the two mystery countries.
Check in – which countries could these be and
why?
Independent work:
Complete the exit slip that asks you to interpret
the pyramids!
Do Now: Answer the following
questions in complete sentences.
What are some of the problems the world is facing due to
overpopulation and global aging?
How can we solve these problems?
Use at least 2 details from the film, “World in the Balance” in
each answer.
What is the demographic
transition model? And what
can the model tell us about
world population?
Demographic Transition Model
DTM seeks to explain
the transformation of
countries from having
high birth and death
rates to low birth and
death rates.
It seeks to explain how
countries go from being
lesser developed to
more developed.
Least
developed
Most
developed
Demographic Transition Model
There are 4 stages of development and each has
a distinct looking population pyramid.
Let’s see some examples of each…
Stage 1 Expanding: Chad, Africa in 1980 or India in 1900
Male
Female
There is
also a high
Death Rate.
In this
country
there is a
high Birth
Rate
Population in millions
This population pyramid is typical of countries in poorer parts
of the world (LDCs = lesser developed countries)
Stage 1 Expanding
Characteristics of Stage 1:
Female
Male
• High fluctuating birth and
death rate
• No great population growth
• Very basic living standards
• Population based on food
supply
• No family planning: many
children needed to work
Population in millions
• Disease/famine common!
Many babies die.
• Very few groups in Stage 1,
only primitive huntergatherers in remote areas
Stage 1 Expanding
Characteristics of Stage 1:
• High fluctuating birth and
death rate
• No great population growth
• Very basic living standards
• Population based on food
supply
• No family planning: many
children needed to work
• Disease/famine common!
Many babies die.
Example: Remote Amazonian tribe
• Very few groups in Stage 1,
only primitive huntergatherers in remote areas
Stage 2 Expanding: Egypt, Kenya, India today
In this
country
there is a
high Birth
Rate
There is a
fast
falling
death
rate
This population pyramid is also typical of countries in LDCs
Stage 2 Expanding
Characteristics of Stage 2:
• High fluctuating birth rate
and lowering death rate
• Population explosion!
• Basic living standards
• Little family planning,
children needed for farming
• Infants surviving!
• Most developing countries are
in this stage
Stage 2 Expanding
Characteristics of Stage 2:
• High fluctuating birth rate
and lowering death rate
• Population explosion!
• Basic living standards
• Little family planning,
children needed for farming
• Infants surviving!
Cambodia
(above),
South Africa
(right)
• Most developing countries are
in this stage
Stage 3 Stationary: Brazil, China, India in 2025
Low death
rate
Low birth
rate
This population pyramid is typical of countries in Moderately
DCs
Stage 3 Stationary
Characteristics of Stage 3:
• Birth rate is falling, death
rate falling more slowly
• Pop. beginning to stabilize
• Improved medical care and
diet
• Fewer children needed
• Lower infant mortality rates
• Women have more access to
education, family planning and
jobs
• Most moderately developed
countries
Stage 3 Stationary
Characteristics of Stage 3:
• Birth rate is falling, death
rate falling more slowly
• Pop. beginning to stabilize
• Improved medical care and
diet
• Fewer children needed
• Lower infant mortality rates
• Women have more access to
education, family planning and
jobs
Rio de Janeiro, Brazil
• Most moderately developed
countries
Stage 4 Contracting: England, Japan, Germany
This population pyramid is also typical of countries in Highly
DCs
Stage 4 Contracting
Characteristics of Stage 4:
• Birth rate is low, death rate
is low
• Pop. is slowly decreasing
• Good health care, reliable
food supply
• Family planning
• Improving status of women,
later marriages
• Highly developed countries
Stage 4 Contracting
Characteristics of Stage 4:
• Birth rate is low, death rate
is low
• Pop. is slowly decreasing
• Good health care, reliable
food supply
• Family planning
• Improving status of women,
later marriages
England
(above),
Japan (right)
• Highly developed countries
Creating and Interpreting Population
Pyramids
Partner work:
Use the data to help you create a population
pyramid for the two mystery countries.
Check in – which countries could these be and
why?
Independent work:
Complete the exit slip that asks you to interpret
the pyramids!