This document discusses housing shortages in various cities around the world. It notes that both less developed countries (LDCs) and developed countries experience housing shortages, with LDCs often having large slum populations. In cities like Mumbai, over 62% of residents live in slums, which tend to form on the edges of cities near jobs or transport. The document also explains that pie charts are best for comparing percentages within a fixed area, while bar graphs are suitable for comparing the same item across different locations or participants. LDCs commonly face severe housing shortages and high slum populations.

1. Chong Boon Secondary School
Sec 2 Geography
Unit 3 Lesson 2

2. Lesson Objectives
• Which cities in the world
experience housing shortage?
• How do Graphs and tables help
show shortage?

3. Where do we have housing shortage?
• Not only Less Developed Countries (LDC).
– China (Beijing)
– India (Mumbai)
– Egypt (Cairo)
• Also found in Developed Countries (DC)
– America (Los Angeles)
Pg 70-71

4. LDCs
• Severe housing shortage is common in LDCs
with large populations.
• Common to find people in slums.
• Over 62% of residents in Mumbai live in
slums.
Pg 72

5. Where do slums grow?
• At the edge of cities.
• Access to low-wage jobs in city.
• Next to industrial areas / locations with
employment.
• Along major transport routes.

6. Pie Charts
• Optimal for comparing percentages
• Normally within a fixed area.
– A city / country / day /
• Normally shows percentages
• Requires conversion into angles (part of 360⁰)

7. Bar graph
• Good for comparing same item
across different
locations/participants.
• Can be in percentages / absolute
numbers
• Good for multiple locations/
participants.

8. Let’s try this out
• Let’s try Ex 2.
• Use a ruler.
• Draw the bar graphs in pencil.
• Remember it must be done to
scale!

9. Take a look at the data

10. Summary
• What is a pie chart most suitable for?
• What is a bar graph most suitable for?
• What types of countries tend to have the
worst slum problems?
Homework
• Answer Qn 1 & 2 on Pg 75 of your textbook.
– Write your answers on your foolscap paper and
submit the next lesson.

11. Summary Video