Home of real teaching & learning
  • Full support for teachers
  • Focus on critical thinking
  • Engaging classroom activities
  • Integrated student eBook
  • Assessed tasks / qBank
  • Practice exam questions
Find out more Download brochure

The InThinking Guarantee: Our sites are written by expert practitioners and not by AI

See our AI policy

Disclaimer: InThinking subject sites are neither endorsed by nor connected with the International Baccalaureate Organisation.

Don't miss out, find out!

3.4 Firms

Topic 3.4 - Firms

This section of the Cambridge IGCSE Economics (0455) syllabus covers the following topics:

SectionTitleGuidance
3.4.1Different types of firms
  • Primary, secondary, and tertiary sector firms
  • Private sector and public sector firms
  • Advantages and disadvantages of small and large firms
3.4.2MergersDefinitions, examples, advantages and disadvantages of different types of mergers: horizontal, vertical, and conglomerate
3.4.3Economies and diseconomies of scale
  • How internal and external economies and diseconomies of scale can affect a firm/industry as the scale of production changes
  • Drawing and interpretation of average total cost (ATC) diagrams to illustrate economies and diseconomies of scale

Please click on the relevant hyperlink below to access other InThinking resources for this section of the syllabus.

Return to the Topic 3 - Microeconomic decision-makers homepage

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other platforms is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.

Help