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{{T}}
[[Category:English]]
[[Category:Population Change and Migration]]

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= Introduction =

Population is not fixed. The number of people living in a place changes as people are born, die, arrive, and leave. '''Population change''' is the overall change in the number and structure of people in a place. '''Migration''' is the movement of people from their usual place of residence to another place, either within the same country or across an international border.

These ideas are closely connected. A town may grow because more babies are born than people die, because people move in, or because both happen at the same time. Another place may have a shrinking population when deaths are higher than births, when more people leave than arrive, or when both processes happen together.

[[File:Population density map of the world.svg|500px|frameless|center]]

The map above shows that people are very unevenly distributed across the world. Some areas are densely populated, while others have very few residents. Population patterns are shaped by many factors, including water, climate, land, jobs, transport, history, government decisions, and migration.

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== Learning Goals ==

By the end of this aiMOOC, you should be able to explain [[English:Population|population]] change, distinguish natural change from migration, calculate simple population changes, read maps and [[English:Population pyramid|population pyramids]], compare different types of [[English:Human migration|migration]], explain push and pull factors, use the terms refugee and asylum seeker carefully, and evaluate the effects of population change on communities.

{{#ev:youtube|https://www.youtube.com/watch?v=JpAiBg0hrfQ|500|center}}

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= Population Change =

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== The Four Basic Flows ==

Four flows directly change the population of a place during a period of time:

{| class="wikitable"
! Flow
! What it means
! Effect on population size
|-
| '''Births'''
| New people are born in the population.
| Increase
|-
| '''Deaths'''
| People in the population die.
| Decrease
|-
| '''Immigration'''
| People move into the place.
| Increase
|-
| '''Emigration'''
| People move out of the place.
| Decrease
|}

A useful summary is:

'''Population change = births − deaths + immigration − emigration'''

This formula works for a village, city, region, or country as long as all values refer to the same place and the same period.

{{BR}}
== Births, Deaths, and Natural Change ==

'''Natural change''' compares births and deaths without including migration.

'''Natural change = births − deaths'''

If births are higher than deaths, the population has a '''natural increase'''. If deaths are higher than births, it has a '''natural decrease'''. Birth and death rates are often shown per thousand people so that places with different population sizes can be compared more fairly.

[[File:Birth rate vs Death rate, OWID.svg|500px|frameless|center]]

A point above the equal-birth-and-death line on this type of graph has more births than deaths. A point below the line has more deaths than births. You should still check the date and source before using the graph as evidence.

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== Migration and Total Population Change ==

'''Net migration''' compares the number of people arriving with the number leaving.

'''Net migration = immigration − emigration'''

Positive net migration means more people arrived than left. Negative net migration means more people left than arrived. Net migration does not tell you why people moved, how long they stayed, or what their experiences were.

[[File:Net Migration 2020.png|500px|frameless|center]]

This map shows net migration in 2020. It is a snapshot for one year, so it should not be treated as a permanent description of any country.

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== A Worked Example ==

Imagine a town begins the year with 100,000 people. During the year, there are 1,500 births, 900 deaths, 700 immigrants, and 300 emigrants.

Natural change is 1,500 − 900 = 600 people.

Net migration is 700 − 300 = 400 people.

Total population change is 600 + 400 = 1,000 people.

The estimated population at the end of the year is therefore 101,000 people. This example also shows why looking only at births and deaths can miss an important part of population change.

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== Population Growth Over Time ==

Population can grow quickly, grow slowly, remain roughly stable, or decrease. A change in the growth rate matters because schools, homes, transport, hospitals, water systems, and jobs must serve the people who live in an area.

[[File:Absolute increase in global population per year, OWID.svg|500px|frameless|center]]

This graph shows the yearly absolute increase in world population, including projections. A projection is not a guaranteed future result. It is an estimate based on assumptions about future births, deaths, and migration.

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== Population Density and Distribution ==

'''Population density''' describes how many people live in a certain amount of land area. '''Population distribution''' describes where people live. Two regions can have the same total population but very different density and distribution.

High density is not automatically good or bad. Dense cities can support public transport and services efficiently, but rapid growth can also put pressure on housing, water, schools, and green space. Low-density areas may offer more space but can make services and transport harder to provide.

When you read a population map, ask: What year are the data from? What does the legend measure? Are the values totals, percentages, rates, or densities? Which places have missing data?

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== Age Structure and Population Pyramids ==

A '''population pyramid''' is a graph that shows the age and sex structure of a population. The youngest age groups are usually near the bottom and older age groups near the top.

[[File:Population pyramid of the world in continental groupings 2023.svg|500px|frameless|center]]

A wide base can indicate many children and relatively high recent birth rates. A narrower base can indicate lower recent birth rates. Bulges or gaps may also reflect past events or migration. A pyramid gives clues, but you should not assume one cause from its shape alone.

{{#ev:youtube|https://www.youtube.com/watch?v=96TgSmze1KE|500|center}}

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= Migration =

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== Types of Migration ==

Migration can be described in several ways:

{| class="wikitable"
! Type
! Meaning
! Example
|-
| '''Internal migration'''
| Moving to a new usual residence within the same country
| Moving from a rural area to a city in the same country
|-
| '''International migration'''
| Moving across an international border
| Moving from one country to another for work or family
|-
| '''Immigration'''
| Moving into a place from the viewpoint of the destination
| A newcomer arrives to live in a country
|-
| '''Emigration'''
| Moving out of a place from the viewpoint of the origin
| A resident leaves to live in another country
|-
| '''Temporary migration'''
| Moving for a limited period
| Seasonal work in another region
|-
| '''Long-term migration'''
| Moving for an extended period
| Settling in a new city for many years
|}

The same person can be called an emigrant from the viewpoint of the place they leave and an immigrant from the viewpoint of the place they enter.

{{#ev:youtube|https://www.youtube.com/watch?v=5Z55k7CqZ0c|500|center}}

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== Why People Move: Push and Pull Factors ==

A '''push factor''' is a condition that can encourage someone to leave a place. Examples include lack of work, conflict, discrimination, crop failure, environmental hazards, or poor access to services.

A '''pull factor''' is a condition that can attract someone to a new place. Examples include jobs, education, safety, family connections, reliable services, or better transport.

The push-pull model is useful, but real decisions are often more complex. A person may respond to several pressures and opportunities at once. Money, laws, family duties, borders, distance, information, and personal goals can all affect whether a person is able to move.

Environmental change can influence migration, but it usually interacts with social, economic, and political conditions. Avoid claiming that one event has one automatic migration result unless evidence supports that conclusion.

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== Internal Migration and Urbanization ==

A common form of internal migration is movement from rural areas to towns and cities. When the share of people living in urban areas increases, this is called '''urbanization'''.

[[File:Nairobi, Kenya ESA418210.jpg|500px|frameless|center]]

This satellite image of Nairobi can be used to study urban growth and land use. Migration may add workers, customers, languages, skills, and new ideas to a city. Rapid growth can also increase demand for housing, transport, water, sanitation, schools, and health services. City planning therefore needs reliable population data.

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== International Migration ==

International migration connects origin and destination countries. People may move for work, study, family reunion, safety, or a combination of reasons. Migration can create social and economic links between places, including family networks, trade connections, cultural exchange, and remittances.

'''Remittances''' are money or goods sent by migrants to people in another place, often family members. They can support households and local economies, but migration can also create challenges such as family separation or the loss of workers with needed skills in some places.

[[File:Immigration Totals, 2020.png|500px|frameless|center]]

This map shows the number of international immigrants living in countries in 2020. It shows migrant stock, not the number of people who moved during that year. That difference between a '''stock''' and a '''flow''' is important when you read migration statistics.

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== Forced Displacement, Refugees, and Asylum ==

Not everyone moves freely. '''Forced displacement''' happens when people are forced or compelled to leave their homes because of serious danger or pressure, such as conflict, violence, persecution, or disasters.

A '''refugee''' is a person who is outside their country of origin and needs international protection because returning would place them at serious risk, including from persecution, conflict, violence, or serious public disorder. An '''asylum seeker''' is a person who is seeking international protection and whose claim has not yet received a final decision. An '''internally displaced person''' has been forced to leave home but has not crossed an internationally recognized border.

These terms are not interchangeable. Using them accurately matters because refugees have specific protections under international law, while other migrants may have different legal situations and reasons for moving.

[[File:Refugee-population-by-country-or-territory-of-asylum,World,2024.svg|500px|frameless|center]]

The map above shows refugees by country of asylum using 2024 data. It does not show every form of human movement, and it should not be used to guess the story of any individual person.

{{#ev:youtube|https://www.youtube.com/watch?v=3e08v5GN__s|500|center}}

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== Effects of Migration ==

Migration can affect both origin and destination places. The effects depend on the size, speed, age structure, skills, rights, and circumstances of the people involved, as well as the ability of communities and governments to respond.

Possible effects on a destination include a larger workforce, cultural exchange, entrepreneurship, greater demand for homes and services, and changes in the age structure. Possible effects on an origin include remittances, reduced pressure on some local jobs, family separation, return migration with new skills, or the loss of workers in important occupations.

There is no single effect that applies to every migration. Good geographical explanations use evidence, identify both benefits and challenges, and avoid stereotypes.

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== Reading Migration Data Carefully ==

A map can show where migration is high or low, but it cannot by itself explain why people moved. A total number may make a large country look more important simply because its population is larger. A rate or percentage may tell a different story.

Before making a claim, check the '''date''', '''geographical scale''', '''unit''', '''source''', '''definition''', and whether the data describe a stock, a flow, or net migration. Then compare more than one source when possible.

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= Connections and Responsible Thinking =

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== Population, Resources, and Planning ==

Population change affects planning. A growing area may need more classrooms, homes, buses, water supply, waste collection, parks, and health services. An ageing or shrinking area may need different services, such as accessible transport or changes in the workforce.

The relationship between population and resources is not simply about how many people live in a place. Technology, consumption, inequality, infrastructure, government decisions, and environmental conditions also shape how resources are used.

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== Using Evidence and Avoiding Stereotypes ==

Migration is about people, not only numbers. Do not assume that everyone from the same country has the same reason for moving, the same legal status, or the same experience. Use respectful language and distinguish evidence from opinion.

When you study a case, ask who produced the data, how people were counted, what categories were used, and whose experiences may be missing. Strong geography combines statistics with maps, interviews, historical context, and careful use of terms.

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= Interactive Tasks =

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== Quiz: Test Your Knowledge ==

{{MC}}

'''What does natural increase mean?'''
(Births are greater than deaths)
(!Deaths are greater than births)
(!Immigration equals emigration)
(!Everyone moves to cities)

{{E}}
<br>

{{MC}}

'''Which expression gives total population change?'''
(Births minus deaths plus immigration minus emigration)
(!Births plus deaths only)
(!Immigration plus emigration only)
(!Population density minus land area)

{{E}}
<br>

{{MC}}

'''What is immigration?'''
(Moving into a place to live)
(!Moving out of a place to live)
(!Travelling for a short holiday)
(!Measuring the age structure)

{{E}}
<br>

{{MC}}

'''What is net migration?'''
(Immigration minus emigration)
(!Births minus deaths)
(!Population divided by land)
(!Deaths minus births)

{{E}}
<br>

{{MC}}

'''Which is most clearly a push factor?'''
(Loss of jobs in the home area)
(!More job opportunities elsewhere)
(!A university place elsewhere)
(!Family members waiting elsewhere)

{{E}}
<br>

{{MC}}

'''Which example is internal migration?'''
(Moving from a village to a city in the same country)
(!Moving from one country to another)
(!Crossing a border for permanent residence)
(!Leaving one country to settle abroad)

{{E}}
<br>

{{MC}}

'''Who is an asylum seeker?'''
(A person waiting for a decision on a protection claim)
(!A tourist visiting another country)
(!A person counted in a birth rate)
(!A commuter travelling to school)

{{E}}
<br>

{{MC}}

'''What does a population pyramid mainly show?'''
(Age and sex structure)
(!Average rainfall)
(!National borders)
(!Road traffic)

{{E}}
<br>

{{MC}}

'''What does population density describe?'''
(People living within a unit of area)
(!Only the number of births)
(!Only the number of migrants)
(!The age of a country)

{{E}}
<br>

{{MC}}

'''What is the best way to interpret a migration map?'''
(Check its date units source and definitions)
(!Assume the pattern never changes)
(!Guess individual reasons from the colors)
(!Ignore missing data)

{{E}}
<br>

{{BR}}
== Memory Game ==

<div class="memo-quiz">
{|
|-
| Natural increase || More births than deaths
|-
| Immigration || Movement into a place to live
|-
| Emigration || Movement out of a place to live
|-
| Population density || Number of residents in a unit of area
|-
| Refugee || Person outside their country who needs international protection
|-
| Urbanization || Rising share of people living in urban areas
|}
{{E}}
<br>

{{BR}}
== Drag and Drop ==

<div class="lueckentext-quiz">

{| class="wikitable"
! Match the correct terms.
! Topic
|-
| '''Push factor'''
| Pressure that can encourage leaving an origin
|-
| '''Pull factor'''
| Attraction that can encourage movement to a destination
|-
| '''Internal migration'''
| Move within one country
|-
| '''International migration'''
| Move across a national border
|-
| '''Net migration'''
| Difference between arrivals and departures
|}
{{E}}

<br>
<br />

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== Crossword Puzzle ==

<div class="kreuzwort-quiz">
{|
|-
| Immigration || What word describes movement into a country to live there?
|-
| Emigration || What word describes movement out of a country to live elsewhere?
|-
| Density || What word completes the term population ___ for people per unit area?
|-
| Refugee || What protected term can describe a person who fled across a border because returning would be dangerous?
|-
| Fertility || What demographic idea is connected with the number of children being born?
|-
| Urbanization || What process increases the share of people living in towns and cities?
|}
{{E}}
<br>

{{BR}}
== LearningApps ==

<iframe> https://learningapps.org/index.php?s=Population+Change+and+Migration </iframe>

{{BR}}
== Cloze Text ==

<quiz display=simple>
{'''Complete the text.'''<br>
|type="{}"}
The difference between births and deaths is called { natural change }. When more people arrive than leave, net migration is { positive }. A move to a new home within the same country is { internal } migration. Conditions that encourage people to leave are called { push factors }. A graph showing the age and sex structure of a population is a { population pyramid }. A person waiting for a decision on a claim for international protection is an { asylum seeker }. The average number of residents in a unit of land area is called { population density }. Maps and graphs should always be checked for their { date }.
</quiz>

<br>

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= Open-Ended Tasks =

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=== Easy ===
# [[English:Population Vocabulary Poster|Population Vocabulary Poster]]: Create a one-page poster that explains population change, natural change, immigration, and emigration with one clear example for each term.
# [[English:Local Movement Map|Local Movement Map]]: Draw a fictional map showing three different moves within a region and label each move as internal migration, commuting, or travel so that you can explain why only one is migration.
# [[English:Population Pyramid Sketch|Population Pyramid Sketch]]: Use a simple age table from your teacher or textbook to draw a population pyramid and write three observations without guessing causes.
# [[English:Push and Pull Comic|Push and Pull Comic]]: Create a four-panel comic about a fictional person considering a move and show at least one push factor and one pull factor respectfully.

{{BR}}
=== Standard ===
# [[English:Local Population Research|Local Population Research]]: Use an official census or local statistics source to compare the population of one place at two different dates, calculate the change, and cite the source.
# [[English:Migration Interview|Migration Interview]]: Interview a willing adult about moving between towns or countries, avoid questions about legal status or traumatic experiences, and summarize what influenced the move.
# [[English:City Growth Field Study|City Growth Field Study]]: Visit a safe local viewpoint or street, or use public satellite images, and record evidence of housing, transport, services, or land-use change linked to population growth.
# [[English:Population Data Video|Population Data Video]]: Produce a two-minute video that explains one population or migration map, identifies its date and unit, and separates what the map shows from what it does not prove.

{{BR}}
=== Advanced ===
# [[English:Population Scenario Model|Population Scenario Model]]: Build a five-year model for a fictional community using births, deaths, immigration, and emigration, then explain which assumption changes the result most.
# [[English:Migration Media Check|Migration Media Check]]: Compare two news reports with one official data source and evaluate whether terms such as migrant, refugee, and asylum seeker are used accurately.
# [[English:Sustainable City Proposal|Sustainable City Proposal]]: Design a plan for a growing city district that must add housing, transport, green space, water, and school places while explaining your priorities.
# [[English:Migration Policy Role Play|Migration Policy Role Play]]: Hold a classroom council with roles such as residents, newcomers, planners, businesses, and service providers, and use evidence to propose a fair response to rapid population change.

{{:Open Task - Create a MOOC}}

{{BR}}
= Learning Assessment =

# [[English:Population Balance Reasoning|Population Balance Reasoning]]: A region records births, deaths, arrivals, and departures for one year; calculate natural change, net migration, and total change, then explain which process had the larger effect.
# [[English:Population Pyramid Comparison|Population Pyramid Comparison]]: Compare two population pyramids and identify two differences in age structure, then give one possible explanation for each while clearly labeling it as a hypothesis.
# [[English:Migration Map Analysis|Migration Map Analysis]]: Use a migration map to describe two spatial patterns and propose two questions that would require additional evidence before you could explain the patterns.
# [[English:Multiple Causes of Migration|Multiple Causes of Migration]]: Analyze a scenario involving drought, job loss, family networks, and new employment elsewhere, then explain why a single-cause explanation would be incomplete.
# [[English:Urban Planning Transfer|Urban Planning Transfer]]: Recommend three services a fast-growing town should prioritize and justify each recommendation using population evidence.
# [[English:Protection Terms in Context|Protection Terms in Context]]: Given short fictional cases, distinguish a migrant, refugee, asylum seeker, and internally displaced person and explain which facts in each case matter for the classification.

<br>
<br>

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= Evidence of Learning =

# '''Knowledge''': You can explain births, deaths, natural change, immigration, emigration, net migration, population density, age structure, and major migration terms accurately.
# '''Calculation skills''': You can use simple population balance data to calculate natural change, net migration, and total change.
# '''Data literacy''': You can read maps, tables, graphs, and population pyramids while checking dates, units, definitions, sources, and missing data.
# '''Reasoning''': You can distinguish observation from explanation and show how several push, pull, social, economic, political, and environmental factors may interact.
# '''Products''': Your maps, posters, models, interviews, videos, or planning proposals communicate evidence clearly and respectfully.
# '''Transfer''': You can apply population and migration concepts to a new place or scenario without relying on stereotypes or assuming that one pattern has one cause.

<br>
<br>

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= OERs on the Topic =

<iframe> https://en.m.wikipedia.org/wiki/Human_migration </iframe>

<br>

For reliable background data and definitions, you can also explore [https://www.un.org/en/global-issues/population United Nations population information], [https://population.un.org/wpp/ World Population Prospects], [https://www.iom.int/fundamentals-migration International Organization for Migration fundamentals], and [https://www.unhcr.org/about-unhcr/who-we-protect/refugees UNHCR information about refugees].

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= Linked Learning Areas =

{| align=center
{{:D-Tab}}
'''[[English:Population Change and Migration|Population Change and Migration]]'''
# [[English:Population|Population]]
# [[English:Demography|Demography]]
# [[English:Human migration|Human migration]]
# [[English:Population density|Population density]]
# [[English:Population pyramid|Population pyramid]]
# [[English:Urbanization|Urbanization]]
# [[English:Refugee|Refugee]]
# [[English:Sustainable development|Sustainable development]]
|}

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= aiMOOC Projects =
[[Category:English]]
[[Category:Population Change and Migration]]
[[Category:Geography]]
[[Category:Human geography]]
[[Category:Migration]]
[[Category:Population]]
[[Category:Grades 7-8]]
[[Category:Social sciences]]
[[Category:AI_MOOC]]
[[Category:GPT aiMOOC]]
{{MT}}

English:Population Change and Migration - Versionsgeschichte

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