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The Cambridge IGCSE syllabus requires us to have a good understanding of the following:
define total and average cost, fixed and variable cost and perform simple calculations;
analyse particular situations to show changes in total and average cost as output changes;
define total and average revenue and perform simple calculations;
describe [...]

The Cambridge IGCSE Economics syllabus requires students to describe (and therefore understand) the following as part of section 4.4 The private firm as producer and employer:
the type of business organisation in the public and private sectors: sole proprietors, partnerships, private companies, public companies, multi-nationals, co-operatives, public corporations;
To start us thinking about some [...]

These YouTube clips help us to understand some of the ideas to do with Market Failure. Some of the ideas in the first clip are not needed for IGCSE understanding (adverse selection and moral panic).
1) General understanding of Market Failure

2) Negative Externalities Explained
Note this uses Marginal Costs and Marginal Benefits curves. Marginal [...]

From flickr.com. Uploaded on April 2, 2007 by SideLong
Before starting to understand Price Elasticity of Supply, it is worth recapping Price Elasticity of Demand. Click on the following link:
www.business2000.ie provides an interactive quiz on PED
This site introduces the main concepts of Price Elasticity of Supply:
Slideshow from http://www.econ.ucsb.edu
This site gives a useful overview of PES:
PES [...]

 
Good recap video:

Good overview video:

Activity: Recapping Factors Affecting Demand and Supply
Econedlink Site
Activity: Exploring changes in Supply and Demand
Ecedweb Site
Activity: How changes in Supply and/or Demand affect Market Equilibrium
College Cram Site
More sophisticated diagram analysis of teh same issue
Whitenova Site
Activity:
Activity: Changes in Supply and Demand Effect Equilibrium Price and Price Ceilings and Price Floors. [...]

Before moving on it is worth recapping the Demographic Transition model:
BBC Scotland Animation of DTM
Now we compare population structures (also known as age-sex structures or ‘population pyramids’) between MEDCs and LEDCs. The following animation should make sense before moving on:
BBC Scotland Education Population Pyramid Flash Animation
Now download the following worksheet and follow the instructions:
[...]

Recapping some key words … can you define the following:

Birth Rate
Death rate
Natural Increase
Natural Decrease

Sec 2 – Birth Rate & Death Rate
View more presentations from chua.geog.

First, use the above slideshow to revise some reasons for high and low birth and death rates.
You should make a table to summarise these causes of high and low birth and [...]

We are thinking about how the world’s population (and different countries / continents’ population) is changing and why.
First a snap shot
An excellent link to show estimated births and deaths (as well as CO2 emissions) across the planet – click on it to view in full:
http://www.breathingearth.net/
How has the world population changed in your lifetime?
Use the following [...]

We first need to recap our understanding of population distribution. Visit this page:
Quick Population Distribution Quiz
And we also need to recap our understanding of the phrase population density:
Quick population Density Quiz
Thanks to http://www.geography.learnontheinternet.co.uk for both of these quizzes.
By the end of this section we will have developed a table to illustrate the different factors affecting [...]