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| Population
Growth Rate Teaching Activities |
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| Population
growth rate (PGR)
is the increase in a countrys population during a period of time,
usually one year, expressed as a percentage of the population at the start
of that period. It reflects the number of births and deaths during a period
and the number of people migrating to and from a country. |
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- Population
growth rates are much higher in most low- and middle-income
countries than in most high-income countries.
- Population
growth rates have declined in low- and middle-income countries
over the past few decades but remain high because birth rates
have not fallen as rapidly as death rates.
- There will
be more than 1 billion more people in the world in 2015 than
there were in 2000 (as population grows from about 6 billion
to 7.1 billion), and six out of seven of these people will live
in low- and middle-income countries.
- Although
the population growth rate for developing countries has
been decreasing for several decades, the number
of people added to the population each year has been increasing
because the population base has become larger.
- Countries
that have a large proportion of their population in their childbearing
years often experiencepopulation momentum. Even if couples have
only enough children to replace themselves when they die, the
population will continue to grow and will not stabilize until
the younger group ages beyond their childbearing years.
- Birth rates
tend to fall when parents have access to family planning, health
care, education and jobs.
- Population
growth can make it more difficult to raise standards of living
in some countries and can put pressure on the environment.
- Two of
the most successful strategies for reducing fertility rates
are providing greater access to primary health care and promoting
education for girls and women.
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Exploring
the PGR Text
1. Read and study
the text and the definition
of population growth rate
and answer the following questions.
- What does population growth rate measure?
- If you wanted to get an accurate picture of population growth trends
in a country, would you look at the average annual growth rate for
a single year, or for a period of years? Explain why.
2. Answer each of the following questions briefly, referring back to
the text if necessary.
- Why have death rates and birth rates declined?
- What causes population momentum? What are its consequences?
- How might increasing urbanization affect environmental conditions
in a country?
- To what extent does migration between your country and others, or
from rural to urban areas within your country affect your countrys
economic, environmental, or social situation?
- What sorts of services and support can a government provide to its
citizens that will help slow the population growth rate? Explain why
you think these strategies may help.
- What might be some reasons why women with a basic education tend
to have fewer children?
3. Calculate the annual population growth rate for countries A, B,
and C using data provided in the table below and this formula:
*
|
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Population
increase
in a year
|
÷
|
Population
at the start of the year
|
x
|
100
|
=
|
Annual
population
growth rate (%)
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| |
Population
at the
start of the year |
Population
at the
end of the year |
Population
increase
during the year |
Annual
population
growth rate (%) |
| Country
A |
22,000,000 |
22,400,000 |
|
|
| Country
B |
8,500,000 |
8,800,000 |
|
|
| Country
C |
400,000,000 |
410,000,000 |
|
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|
* (Average annual population growth rates for a period
of years provide a better picture than annual rates. For this reason,
they are used in the Data Table. Calculating any growth rate
for a period longer than a year requires more complicated mathematical
formulas than the one used to calculate an annual rate.)
4. Population growth rates are small numbers, but they have large effects
on population. To see what this means, complete the following exercises.
- Assume the world population at the beginning of 2000 was about 6
billion. If the projected 2000 average annual population growth rate
for the world was 1.1%, how many more people would be added to the
world by 2001.
- If the 2000 world population grew at .2%, the same projected rate
as the United Kingdom, how many more people would be added to the
world by 2001.
- If the 2000 world population grew at 1.7%, the same projected rate
as Kenya, how many more people would be added to the world by 2001.
- Use your answers to questions 3a,b, and c to make a general statement
about the relationship between population growth rates and the change
in the size of a population.
5. Use the calculations and data in the table below to calculate the
birth rates, death rates, and population growth rates for three countries
and fill in the missing information.
|
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Number
of births
(%)
|
÷
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Population
|
x
|
100
|
=
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Birth
rate
|
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|
Number
of deaths (%)
|
÷
|
Population
|
x
|
100
|
=
|
Death
rate
|
|
| |
Birth
rate
(%)
|
|
Death
rate
(%)
|
=
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Population
growth rate (%)
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|
Country
|
Births
|
Deaths
|
Population
|
Birth
rate
|
Death
rate
|
Population
growth rate
|
|
Country
A
|
662,000
|
297,000
|
33,100,000
|
|
|
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|
Country
B
|
411,000
|
191,800
|
27,400,000
|
|
|
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Country
C
|
211,200
|
96,800
|
4,400,000
|
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6. If a population growth rate is low, population is growing slowly.
If it is high, population is growing rapidly. To understand what "slow"
and "rapid" mean, it helps to look at how long it will take
different countries growing at different rates to double their population.
- The number of years it takes a population to double can be estimated
by dividing the number 70 by that population's growth rate. Calculate
the doubling time of populations growing at the rates shown in the
key to the map.
- Is three percent a rapid growth rate? Explain. Is two percent a
rapid growth rate? Explain. Is one percent a rapid growth rate? Explain.
- Use the projected population data in column 2 of the Social
Data Table for 19982015 to calculate the population doubling
time for these countries: your country, Canada, Chile, Finland, India,
Zambia.
- Assume that your country has an average annual population growth
rate of 1.8%. It will take 39 years for your countrys population
to double. What changes will your country need to make to deal with
this growth in population? Consider such issues as housing, health
care, food supplies, transportation, employment, education, and the
environment. Do you think your country presently has the resources
to handle this rate of population growth? Why or why not?
7. What consequences might a declining population growth rate have
on a countrys economy and environment?
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| Exploring
the PGR Map

Average
Annual Population Growth Rate (%), 19801998
1. According to the map
key, what color represents countries with lower population growth rates?
Where do these countries tend to be located?
2. What color represents countries with higher population growth rates?
Where do these countries tend to be located?
3. Which continent has the largest number of countries with a high
PGR? What assumptions might you make about living conditions there?
4. Name and locate on the map three countries with population growth
rates of more than 3 percent, three with rates of 2 to 3 percent and
three with rates of less than 1 percent. To what extent are these countries
typical of other countries in their regions?
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| Exploring
PGR
Chart 1

Chart
1. Total World Population by Country Income Group 1980, 1998, 2015
1. Study Chart
1 which shows the world population size by country income group
for 1980, 1998, and 2015. What is the total world population for each
year? How much will total world population have increased from 1998
to 2015?
2. Use the data
from the table below to complete the exercises that follow.
|
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| |
1998
(millions)
|
2015
(millions)
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| Low-income
economies |
3536
|
4436
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| Middle-income
economies |
1474
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1748
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| High-income
economies |
886
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928
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| Total
world population |
5897
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7113
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- Calculate the percentage of the world population that lived in low-,
middle-, and high-income countries in 1998.
- Describe the general distribution of the worlds population
among low-, middle-, and high-income countries.
- Calculate the percentage of the worlds population that is
projected to live in low-, middle-, and high-income countries in 2015.
- Compare the percentages for each country income group and describe
the change between 1998 and 2015.
3. Use the Social Data Table
to identify the five most populous countries in 1998 along with their
populations, their regions, and their income groups, and fill in the
following table:
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| Country |
1998
population |
Region
(millions) |
Income
group |
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- Which two countries had the largest populations?
- To which income group did these two countries belong?
- Which region had the most countries in the top five most populous
nations?
4. Use the Social Data Table
to fill in the population information for China and India in the following
table. Next, calculate the percentage of the worlds population
that is represented by China and India for 1998 and 2015 and add that
information to the table. (Divide each countrys population by
the worlds population and multiply the figure by 100.) Then answer
the questions that follow.
|
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Population
1998
|
%
of world
population
1998
|
Average
annual
population
growth rate
19982015
|
Population
2015
|
%
of world
population
2015
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China
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.7
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India
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1.3
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World
|
5,897,000,000
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----
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1.1
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7,113,000,000
|
---
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- Compare the population size of these two countries in 1998. How
many times larger was Chinas population than Indias? (Divide
Chinas population by Indias population.)
- Compare the population size of these two countries in 2015. How
many times larger is Chinas population expected to be than Indias?
- India has a smaller population base than China, yet the gap in their
populations is expected to decrease significantly in the next few
years. How can you account for this?
- Add the projected 2015 populations of the two countries. What percentage
of the worlds population will they represent?
- Given the population size projections of these two countries, in
what ways might they play important roles in the world economy? In
your answer consider China and Indias potential as producers
and consumers, and to what extent this potential depends on the development
of their human capital
and the use of their natural
resources. 5. In 1998, four out of every five people in the world
lived in low- and middle-income countries. As this percentage increases,
what might be some of the impacts on the global economy? On the environment?
On peace and security issues?
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| Exploring
PGR
Chart 2

Chart
2. Population Growth Rate by Country Income Group, 1980-2015
1. Study the information
in Chart 2. What is
happening to the average annual population growth rate in low- and middle-income
countries over time?
2. According to
Chart 1, what is happening
to the population size in low- and middle- income countries over time?
3. How do you explain
these two trends?
4. The following
table shows population data for three developing countries. Complete
the table by calculating the annual population change for each country
(divide the percentage by 100 to get a decimal, then multiply population
size by the decimal figure), then answer the questions that follow.
|
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| Country |
Population
size
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Average
annual PGR %
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Annual
population change
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| Ethiopia |
| 1980 |
38,000,000
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2.7
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| 1998 |
61,000,000
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2.1
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| Pakistan |
| 1980 |
83,000,000
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3.0
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| 1998 |
132,000,000
|
2.3
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| Ukraine |
| 1980 |
50,000,000
|
.2
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| 1998 |
50,000,000
|
.8
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- Look at the numbers for Pakistan. Although the average annual population
growth rate decreased from 1980 to 1998, the annual population increase
was greater in 1998. Why?
- What are the population trends in Ethiopia?
- What are the population trends in Ukraine? What would have been
its total population in 1999? What might be some reasons for these
trends?
5. What effect might a declining population growth rate have on a countrys
economy and environment?
6. Why might a country not want to slow its population growth?
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| Exploring
PGR Charts
3.1 & 3.2

Charts
3.1 & 3.2. Composition of Population in Low- and High-income Economies,
1998
1. Study the information in Chart
3.1 for low- and high-income economies in 2000. Then, answer the
following questions about the population trends shown.
- In low-income countries, which age range(s) contained the largest
percentage of the population? the lowest?
- In high-income countries, which age range(s) contained the largest
percentage of the population? the lowest?
- In a brief statement, compare the age composition of the populations
for low- and high-income countries for 2000.
- Considering your answer to question 1c, what type of social programs
might be important to meet the future needs of the largest age groups
of each country income group?
2. Study the information in Chart
3.2 for low- and high-income economies in 2030. Then, answer the
following questions about the population trends shown.
- In low-income countries, which age range(s) contained the largest
percentage of the projected population? the lowest?
- In high-income countries, which age range(s) contained the largest
percentage of the projected population? the lowest?
- Compare the age composition of the populations for low- and high-income
countries shown in Chart
3.2 with those shown in Chart
3.1.
- Compare the gender composition for low- and high-income countries
shown in Chart 3.2.
with those shown in Chart
3.1.
3. Read the definition of population
momentum in the glossary. Using Charts 3.1
and 3.2as a reference,
in which economic groups and years do you think this phenomenon exists?
Why?
4. Look at the shapes of the charts in Charts 3.1
and 3.2. What would
a stabilized population look like? Explain.
5. What impact might population momentum have on the care of small
children in a country where a large proportion of the childcare duties
are performed by daycare centers? What about a population where elderly
relatives provide childcare? Who are the caretakers of small children
in your country? What effect might population momentum have on these
arrangements?
6. What impact might an aging population have on the care of elderly
people in a country where a large proportion of these people live in
nursing homes or elderly housing? How are elderly people cared for in
your country? What impact might an aging population have on this care?
7. Match each of the following descriptions with the country below
that illustrates the trend described.

- The death rate is high, the birth rate is high, and there are a
large number of children in the population.
- There has been a sustained decline in the birth rate, but the proportion
of the elderly population has not yet become large.
- The birth rate has been low for a long period, and the elderly proportion
of the population is increasing.
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Exploring the
Data Tables
1. Read the definition of growth
rates. Use the Social Data
Table to find the countries that have negative average annual population
growth rates projected for the years 19982015.
- How many countries have negative projected population growth rates?
In which region(s) are these countries located?
- How will a negative population growth rate affect the actual numbers
of people in these countries?
- What might be some benefits to a decrease in population?
- What are some potential problems if a countrys population
is decreasing or growing too slowly to replace the number of people
who die?
2. Make a copy of the blank Comparative
Data Table and label the first column Countries and the second
column Population growth rate, 198098. (Note.
The Work On Line version tables are already labeled.) Then using
the text and the Data
Tables, fill in the chart according to the following instructions:
- In the column at the left of the table, write the following countries
and their regions: Brazil (South America), Ghana (Sub-Saharan Africa),
Philippines (Asia, South and East, and the Pacific), Egypt (Middle
East and North Africa), Canada (North and Central American and the
Caribbean), Russian Federation (Europe and Central Asia).
- Read the definition of population
growth rate.
- Use the Social Data Table
to find the average annual population growth rate for each country
during 198098. Rank the countries with "1" equaling
the lowest population growth rate and "6" the highest. Write
the appropriate ranking number in parentheses after the data in column
2. Make a general statement comparing the population growth rates
in these six countries.
- Find each of the six countries in the world and regional map
gallery. Compare the color of each country with those of its neighbors.
To what extent is each country typical of conditions in its area and
region? Make a general statement comparing the population growth rates
in the six regions.
3. Make a copy of the blank Comparative
Data Table and label the first column Countries, the second
column Population growth rate, 198098, the third
column, Life expectancy at birth, 1998, the fourth column
GNP per capita, 1998 and the fifth Access to safe
water, 199096. (Note. The Work On Line
version tables are already labeled.) Then using the text
and the Basic Data Table,
fill in the chart according to the following instructions.
- Choose a low-income country in Sub-Saharan Africa and one in Asia
(South and East) and the Pacific and write their names in the first
column.
- Choose a middle-income country in each of the following regions
and add them to the first column: South America, Europe and Central
Asia, and Middle East and North Africa.
- Choose a high-income country in North and Central America and the
Caribbean, one in Europe and Central Asia, and one in Asia (South
and East) and the Pacific and add them to the first column.
- Label each country in your data table with an L, M, or H to show
which income group it belongs to: low, middle, or high.
- Read the definitions of population
growth rate, life
expectancy at birth, GNP
per capita, and access
to safe water. Go to the Basic
Data Table, and for each of your countries find the 198098
population growth rate, 1998 life expectancy at birth, 1998 GNP per
capita, and the 199096 percentage of population with access
to safe water, and write this information in the appropriate columns.
If data for one of the indicators are not available, select another
country from the same income group and region.
- Rank the countries, with "1" equaling the lowest population
growth rate and "8" the highest. Write the appropriate ranking
number in parentheses after the data in column 2.
- Study your chart and answer the following questions:
- In the countries with population growth rates of more than 3 percent,
are the other indicators high or low?
- In the countries with population growth rates of 2 to 3 percent,
are the other indicators higher or lower than in the countries with
population growth rates of more than 3 percent?
- In the countries with population growth rates of less than 1 percent,
are the other indicators higher or lower than in the other countries?
- Does population growth rate follow the same trend as the other
development indicators in your chart? Explain.
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Exploring
PGR
Photo 1

Grandmother
and Children, USA
1. Look at the photograph. Describe what you see.
2. Would this be a common scene in your country? Why or why not?
3. In which country was this photograph taken?
4. Find the country in the world and regional map
gallery. What region is it in?
5. Find the country in the Basic
Data Table and determine if it is a low-, middle-, or high-income
economy.
6. According to the Basic
Data Table, what is this country's projected population growth rate
for 1998-2015? Its 1998 life expectancy at birth? Its 1998 GNP per capita?
7. What do you think life is like for the average person in this country?
Support your answer.
8. What, if any, aspects of the activity shown in the photograph might
help improve living standards in industrial countries? In developing
countries?
9. Which sector of development (i.e., social, economic or environmental)
is best represented by the photograph? Explain your answer. Is it possible
for this photograph to represent other sectors as well? In what way?
10. In what ways might the activity in the photograph encourage sustainable
development? In what ways might it discourage sustainable development?
Explain your answer.
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Exploring
PGR
Photo 2

Girls'
Education, Mali
1. Look at the photograph. Describe what you see.
2. Would this be a common scene in your country? Why or why not?
3. In which country was this photograph taken?
4. Find the country in the world and regional map
gallery. What region is it in?
5. Find the country in the Basic
Data Table and determine if it is a low-, middle-, or high-income
economy.
6. According to the Basic
Data Table, what is this country's projected population growth rate
for 1998-2015? Its 1998 life expectancy at birth? Its 1998 GNP per capita?
The percentage of its 1990-1996 population with access to safe water?
7. What do you think life is like for the average person in this country?
Support your answer.
8. What, if any, aspects of the activity shown in the photograph might
help improve living standards in industrial countries? In developing
countries?
9. Which sector of development (i.e., social, economic or environmental)
is best represented by the photograph? Explain your answer. Is it possible
for this photograph to represent other sectors as well? In what way?
10. In what ways might the activity in the photograph encourage sustainable
development? In what ways might it discourage sustainable development?
Explain your answer.
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Exploring
PGR
Case Study 1
1. Who is the narrator of this case study and why is she holding this
meeting?
2. Who attends the meeting?
3. Why do some people say that the village can support more people?
Why do other people say that the village cannot support more people?
4. How can spacing pregnancies help to produce a healthier, more economically
secure family?
5. What are some of the benefits mentioned for having large families?
What are some of the benefits to having small families?
6. In Christys opening presentation, she discusses responsible
parenthood with the women. If you were to give a presentation
on responsible parenthood, how would you define the term
and what topics would you cover?
7. Christy tells the women that she works with the Ministry of Health.
Why might the government want to slow population growth and encourage
family planning?
8. Vivian tells the group that some of the men were angry that
outsiders were trying to meddle in our private affairs. To what
extent is having children a private matter, a public concern, or both?
Use examples from the case study and your own experience to explain
your answer.
9. At the end of the case study, Christy suggests that the group continue
their meeting by talking about how to get more of the community, especially
husbands, interested in family planning. What are some of the objections
people might have to family planning? What are some of the reasons people
might support family planning? If you were at this meeting, what strategies
would you suggest to bring these two sides together?
11. Look at the Social Data
Table and find Cameroon. What is the projected 19982015 average
annual population growth rate? How does this compare with the projected
19982015 average annual growth rate for your country?
12. Is family planning an issue where you live? Explain.
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PGR
Research and Explore
1. Assume that you are the prime minister of a low-income country in
which the population growth rate is 3 percent a year. Your government
has adopted a policy of reducing the rate to 2 percent over the next
10 years. Listed below are some activities that could help your country
reach that goal. Because of budgetary constraints, you cannot undertake
all the activities at once.
- Choose the five activities that you would undertake first and rank
them in the order in which you would implement them. Explain why you
chose this ranking.
- Start a campaign of posters, billboards, radio announcements,
and newspaper ads that portray small families as desirable.
- Have the Ministry of Health train more people to provide family
planning services in rural health clinics and urban hospitals.
- Design pre- and in-service training programs for medical personnel
to teach them how to provide family planning services.
- Contract with national celebrities in sports and entertainment
to film public service ads in support of family planning.
- Have the Ministry of Education develop a curriculum for secondary
schools about population growth.
- Provide financial incentives for parents to send their daughters
to school.
- Have the national university do research to determine how to
persuade more couples to practice family planning.
- Enact a law that will raise the taxes of couples who have more
than two children.
- Enact a law that will lower the taxes of couples who have two
or fewer children.
- Have the Department of Industries develop job training programs
for women.
- Use tax revenue to set up a social security fund so retired
people will have a small but secure income.
- Are there any activities listed that you would not use? Explain.
- What are three additional activities that you would add to your
list? Describe each one and explain how it would fit into your ranking.
2. This activity, which demonstrates how much family size can influence
a countrys population, is designed to be done in class or with
a group of people. If you are doing this activity by yourself, draw
it out on a piece of paper.
- Four members of the class form two couples. Couple A and their descendants
will always have two surviving children; couple B and their descendants
will always have three.
- Couple A selects two members of the class as its children; couple
B selects three members of the class as its children.
- The children of couples A and B select members of the class as their
spouses. The children of couple A and their spouses are couples C
and D; the children of couple B and their spouses are couples E, F,
and G.
- Couples C and D each select two members of the class as their children.
Couples E, F, and G each select three members of the class as their
children. How many children altogether do couples C and D have? Couples
E, F, and G?
- Continue the activity through another generation (the fourth); members
of the class already selected will have to be selected again. At the
end of the generations, there will be eight children who are descendants
of couple A and twenty-seven who are descendants of couple B.
- What conclusions can you draw from this exercise?
3. Make a family tree by going back to your great-grandparents on both
your mothers and fathers sides of the family. To whatever
extent possible, list the years in which people were born, were married,
and died, as well as their occupations and levels of education. If you
do not know all of the information yourself, interview other family
members; older relatives are excellent sources. After your family tree
is assembled, analyze the data you collected and answer the following
questions to the best of your knowledge.
Note: Although one of the objectives of this exercise is to help
you become more informed about your own family, if you are unable to
collect information from your family, or if your family feels uncomfortable
discussing this information, you can interview a neighbors or
friends family instead.
- Do your parents have as many children as your grandparents had?
as your great-grandparents had?
- Are there differences among the generations in respect to life expectancy?
- Are there differences between the sexes in respect to life expectancy?
- Did any of your family suffer from diseases that are preventable
today?
- Does your data suggest any relationship between life expectancy,
occupation, and/or education level and the number of children people
had?
- How many children would you like to have? Does knowing your family
history have any bearing on your decision? Explain.
4. Peoples decisions about family size affect not only themselves,
but also the other people they share resources with. This exercise helps
show how changes in population size over time can affect the demand
on public services and natural resources. The more information and the
more types of information you can collect, the more complete
picture you can make, so it is best to do this exercise with a whole
class. Because some information may be difficult to find, you may have
to settle for estimates, but estimates can still show trends.
- Find out what your communitys population was ten years ago
and what it is today. Has it grown or declined, and by how much?
- With your class, make a list of the services and resources you and
your family must share with other members of your community. (Some
ideas may include: schools, roads, public transportation, water, sewerage
systems, electricity, telephones, fuel, or parks.)
- Break up into small groups, and divide the list equally among the
groups. With your small group find evidence of how demand for your
group's resources or services has changed over the past ten years.
You may find that ten years ago, a particular service did not even
exist, or that a resource that was widely used ten years ago is not
around today. Try to gather information from a variety of sources,
such as local government offices, interviews with older family members
and neighbors, photographs, libraries, newspaper clippings and archives,
and utility companies or coops.
- With your small group, present your findings to the class in a short
written or oral report.
- As a whole class compare the findings with the population trends.
As population has grown or declined, which resources and services
have grown or declined with it? Which have not?
- Individually, use the evidence your class has collected to write
a short essay answering the question: If your communitys population
continues to grow or decline over the next ten years as it has in
the past ten years, what additional changes do you expect to see in
the demand for resources and services? Is this change sustainable?
Explain.
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