Lesson 2: Over-population/Under-population

Lesson 2: Over-population/Under-population


Title. Overpopulation/Under-population 

L.O: To show an understanding of over-population and under-population

Key Terms/phrases:



Optimum population

Birth Rate/ Death Rate/Migration

Physical and Human causes / Positive and Negative SEEP IMPACTS (social, economical, environmental, political)

Key questions:

How do birth rate, death rate and migration contribute to the population of a country increasing or declining?

Key skills:



Team work

Case Study construction

Lesson starter: Task 1:

Watch the below clip and after watching try to sum up what the message is in no more than 50words.


“When a country or region does not have enough resources to keep its people at a reasonable standard of living”.


 “When a country or region has more resources available than are being used by people living there”

There is a third definition we are interested in too:

Optimum population:

“The size of a population that produces the best results according to chosen end targets. These end targets could be largest per capita income, long term sustainability, efficient operation of democracy, preservation of personal freedom and preservation of biodiversity.

Image result for optimum population cartoon

Key Question: How might a country go about achieving a optimum population? What strategies might it implement? Discuss as a whole class…

Main Development:

Task 2: Key questions – Think, Pair ,Share:

Work in pairs to try and answer the following questions:

Q. Explain why a country with a large population may not be overpopulated?

Q. Explain why a country with a small population may be overpopulated?

 Discuss as a whole class…

 Task 3: Research Skills:

 Using your mobile devices or laptops, access the following website link and investigate the following questions:


  1. Name the three most populated countries according to the Optimum Population Trust

Case Study construction:


  1. Use the internet to find out why Singapore is overpopulated. Bullet point the main reasons in your notes

Task 4: Consequences of over-population and under-population:

Create a table like the one below.

Image result for blank table outline two columns

Title one column over-populated and the other under – populated. Use pg. 7 in your course text books to complete the table and answer Task 4 with reference to source E.




Image result for cambridge igcse text book


Plenary: Task 5:  –  Show your understanding:


Use the evidence in the photographs below to create definitions of overpopulation and under-population (match your definitions with the ones at the start of the lesson, but do not cheat and look at them before)

Image result for tokyo people congestions

Picture 1 – downtown Tokyo

Image result for underpopulation

 Picture 2 – small village in rural Iceland

Case studies covered:

 A country which is over-populated

A country which is under-populated



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