Market structures (HL only)
Unit 2.11: Market structures
This is a link page to sub-pages, containing lesson plans and learning activities, which provide activities and lesson plans for the sub-unit of 2.12: Market structures. Previously this section would have been a sub-unit of unit 1.5, theory of the firm under the old syllabus.
I have also included a fun experimental learning activity that you can do with your students. It will help your students understand and explain the difference between the four market structures.
Learning activity
To play the following simulation take the following steps:
1. Divide your class into various businesses which reflects the number of firms within each industry e.g. assign one of your students to be a monopoly, 3 play the role of an oligopoly, 4 to play the role of monopolistic firms and the rest can represent perfectly competitive firms.
2. Provide each student with either a piece of chocolate or other candy. The types of chocolate provided to each market structure can be different but the students representing firms in perfect competition must all be given the same piece of candy, to represent the homogenous products in that structure.
3. Inform the class that you as the consumer will purchase one piece of chocolate from each market type at a price of between 0.20 c and $1. Each student then decides on how much they will sell their sweet for and writes this down on a small piece of paper. Neither the monopolistic or perfectly competitive firms can speak to each other, to agree to a collective price. The oligopolistic firms can do this.
4. Go round to each of the 4 market structures and purchase one of the pieces of candy for the cheapest price available. The firm representing a monopoly may as well charge the full $1, since there is no competition and you have already declared that you are committed to purchasing from every structure.
5. Discuss this activity with your students - what did they learn from this exercise? Questions that may be discussed might be - why could the smaller firms not speak to each other? What is to stop the firms in oligopoly cheating on the agreed deal?
6. Read out some of the characteristics of the 4 market structures and have your classes assign each to the classroom simulation they had just played.
Links to pages with lesson plans for unit 2.11 (HL only)
Direct links to the unit pages can be accessed at:
Perfect competition (HL only)
This is the beginning of the section on perfect competition. There are a number of paper one questions on this topic, some of which are included on this site. This lesson looks at the conditions of...
Monopoly (HL only)
This lesson focuses on monopoly structures and specifically the way that a monopoly is able to take advantage of barriers to entry to establish their position as the only firm within the industry. It...
Monopolistic competition (HL only)
This lesson focuses on monopolistic competition. Your classes may have been unable to provide an example of a pure perfectly competitive market but will be able to provide several examples of industries...
Oligopoly (HL only)
This lesson focuses on the market structure of oligopoly and the characteristics that this market structure possesses. An effective way to teach this topic is to focus on a local business such as local...
Unit 2.11: Market structures review sheet (HL only)
I have included this page, which contains a PDF handout as a simple revision exercise. I find that many IB students get a degree of comfort from these short summary handouts.The review sheet is available...
Unit 2.11: Diagram revision
1. Complete the following diagrams:Perfectly competitive firm in the LR Perfectly competitive firm making a loss Perfectly competitive firm making abnormal profit Monopoly firm making a loss
Unit 2.11: Multiple choice quiz (HL only)
Available as a PDF file at: Theory of the firm